User Posts: Dr. Lisa S. Apfel MD - Spine and Neurosurgery
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C7–T1 Disc Derangement
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Cervical C6–T1 disc derangement refers to damage or displacement of the intervertebral discs located between the sixth cervical (C6) and first thoracic (T1) ...

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Disc Derangement at C6–C7
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Cervical C6–C7 disc derangement refers to a problem with the intervertebral disc positioned between the sixth and seventh cervical vertebrae in the neck. The ...

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Cervical C5–C6 Disc Derangement
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Cervical C5–C6 disc derangement refers to structural and functional disruption of the intervertebral disc located between the fifth and sixth cervical ...

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C4-C5 Intervertebral Disc Derangement
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Cervical C4–C5 disc derangement happens when the soft, cushion-like disc between the fourth and fifth bones (vertebrae) in your neck bulges, tears, or ...

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C3–C4 Disc Derangement
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Cervical disc derangement at the C3–C4 level refers to pathological changes in the intervertebral disc situated between the third (C3) and fourth (C4) cervical ...

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C2–C3 Disc Derangement
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A cervical C2–C3 disc derangement refers to injury or abnormal mechanical behavior of the intervertebral disc located between the second (axis) and third ...

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C1–C2 Disc Derangement
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Disc derangement at C1–C2 occurs when fibers of the disc’s outer ring (annulus fibrosus) tear or the inner gel (nucleus pulposus) pushes outward. This can ...

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Cervical Disc Derangement
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Cervical disc derangement refers to any abnormal displacement, disruption, or degeneration of the intervertebral discs in the neck (cervical spine), including ...

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Disc Derangement
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Disc derangement refers to any disruption in the normal structure or function of an intervertebral disc. This can include bulging, herniation, displacement, ...

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Cervical Internal Disc Extraligamentous Disruption
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Internal disc disruption (IDD) is characterized by tearing or fissuring of the annulus fibrosus—the tough outer ring of the intervertebral disc—allowing ...

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Cervical Internal Disc Transligamentous Disruption
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Cervical internal disc transligamentous disruption (CIDTD) refers to a tear or weakening of the inner layers of the cervical (neck) intervertebral disc that ...

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Cervical Internal Disc Free Fragment Disruption
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Cervical internal disc disruption with free fragment refers to a condition in which the soft gelatinous core (nucleus pulposus) of one of the cervical ...

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Cervical Internal Disc Subligamentous Disruption
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Cervical Internal Disc Subligamentous Disruption is a specific form of internal disc disruption in which the nucleus pulposus and inner annular fibers of a ...

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Cervical Internal Disc Subarticular Disruption
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Cervical Internal Disc Subarticular Disruption (CIDD-S) is a variant of internal disc disruption (IDD) occurring in the cervical spine. In IDD, the nucleus ...

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Cervical Internal Disc Annular Disruption
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Cervical Internal Disc Annular Disruption (CIDAD) refers to damage within the annulus fibrosus—the tough, outer ring of an intervertebral disc in the ...

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Cervical Internal Disc Extradural Disruption
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Cervical Internal Disc Extradural Disruption is a condition in which small tears develop within the annulus fibrosus (the tough outer rings) of a cervical ...

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Cervical Intradural Disc Intradural Disruption
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Cervical internal disc intradural disruption—more commonly termed cervical intradural disc herniation (IDH)—occurs when the nucleus pulposus of an ...

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Cervical Internal Disc Traumatic Disruption
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Cervical Internal Disc Traumatic Disruption (CIDTD) is a form of discogenic neck pain characterized by tears or fissures within the annulus fibrosus of an ...

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Cervical Internal Disc Degenerative Disruption
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Cervical internal disc degenerative disruption (CIDD) refers to progressive changes within the intervertebral disc of the neck that weaken its internal ...

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Cervical Internal Disc Diffuse Disruption
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Cervical Internal Disc Diffuse Disruption refers to widespread damage within the intervertebral discs of the neck (cervical spine), where the tough outer ring ...

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Cervical Internal Disc Non-Contained Disruption
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A cervical internal disc non-contained disruption (CID-NCD) occurs when the inner gel-like nucleus pulposus of a cervical intervertebral disc breaches the ...

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Cervical Internal Disc Contained Disruption
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Cervical internal disc contained disruption (CIDCD) refers to a condition in which the inner core of the cervical intervertebral disc (the nucleus pulposus) ...

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Cervical Internal Disc Paramedian Disruption
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Cervical internal disc paramedian disruption (CIDPD) is a form of discogenic neck pain characterized by tears and fissures within the annulus fibrosus of an ...

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Cervical Internal Disc Posterolateral Disruption
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Cervical Internal Disc Posterolateral Disruption (CIDD) is a type of internal disc disruption in which the soft, gel-like nucleus pulposus inside a cervical ...

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Cervical Internal Disc Lateral Disruption
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Cervical internal disc lateral disruption is a type of internal disc disruption (IDD) affecting the lateral region of an intervertebral disc in the neck. In ...

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Cervical Internal Disc Lateral Recess Disruption
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Cervical internal disc lateral recess disruption is a condition in which structural damage inside a cervical intervertebral disc (internal disc disruption) ...

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Cervical Internal Disc Asymmetric Disruption (CIDAD)
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Cervical Internal Disc Asymmetric Disruption (CIDAD) is a discogenic pain syndrome characterized by focal tearing or fissuring of the annulus fibrosus on one ...

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Cervical Internal Disc Focal Disruption
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Cervical internal disc focal disruption is a form of discogenic pain syndrome affecting the cervical intervertebral discs (C2–C3 through C7–T1) in which ...

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Cervical Internal Disc Circumferential Disruption (CIDCD)
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Cervical Internal Disc Circumferential Disruption (CIDCD) is a form of internal disc disruption characterized by delamination or separation of the concentric ...

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Cervical Internal Disc Extraforaminal Disruption
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Cervical Internal Disc Extraforaminal Disruption is a specialized form of internal disc disruption (IDD) that occurs in the neck region (cervical spine), ...

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Cervical Internal Disc Inferiorly Migrated Disruption
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Cervical Internal Disc Inferiorly Migrated Disruption refers to a specific form of cervical intervertebral disc injury in which internal tearing of the annulus ...

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Cervical Internal Disc Superiorly Migrated Disruption
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Cervical internal disc superiorly migrated disruption is a subtype of intervertebral disc injury in which annular fissures (tears) within the nucleus pulposus ...

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Cervical Internal Disc Migrated Disruption
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Cervical internal disc migrated disruption (CIDD) refers to a pathological condition in which the intervertebral disc in the cervical spine undergoes internal ...

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Cervical Internal Disc Distal Extraforaminal Disruption
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A cervical internal disc distal extraforaminal disruption refers to a tear or rupture of the annulus fibrosus and nucleus pulposus of an intervertebral disc in ...

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Cervical Internal Disc Proximal Extraforaminal Disruption
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Cervical Internal Disc Proximal Extraforaminal Disruption refers to a specialized form of disc injury in the neck (C2–C7) where microscopic tears (fissures) ...

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Cervical Internal Disc Foraminal Disruption
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Cervical internal disc foraminal disruption refers to a condition in which the inner core of an intervertebral disc in the neck (cervical spine) weakens or ...

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Cervical Internal Disc Posterolateral Disruption
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Cervical internal disc posterolateral disruption (CID–PLD) is a form of internal disc disruption (IDD) in which the inner architecture of a cervical ...

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Cervical Internal Disc Posterior Disruption
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Cervical internal disc posterior disruption (often termed cervical internal disc disruption or IDD) is characterized by fissuring or tearing of the annulus ...

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Cervical Internal Disc Parasagittal Disruption
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Cervical Internal Disc Parasagittal Disruption (CIDPD) is a form of internal disc disruption in which the annulus fibrosus develops fissures or microscopic ...

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Cervical Internal Disc Central and Both Paracentral Disruption
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Cervical internal disc disruption (CIDD) refers to microscopic tears or degeneration of the intervertebral disc in the neck that cause pain without a large ...

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Cervical Internal Paracentral Disc Disruption
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Cervical internal paracentral disc disruption is a neck condition where the soft inner gel (nucleus pulposus) of an intervertebral disc tears the tough outer ...

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Cervical Internal Central Disc Disruption
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Cervical Internal Central Disc Disruption (CICDD) happens when the soft inner core (nucleus pulposus) of a neck disc develops tiny tears or cracks in its ...

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Internal Disc Disruption (IDD) at the C7–T1
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Internal Disc Disruption (IDD) at the C7–T1 level is a painful spine condition in which microscopic tears (fissures) form within the inner layers of the ...

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Internal Disc Disruption at the C6–C7
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Internal disc disruption at the C6–C7 level refers to painful structural damage within the intervertebral disc—specifically, tears or fissures of the annulus ...

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Internal Disc Disruption (IDD) at the C5–C6
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Internal disc disruption (IDD) at the C5–C6 level refers to internal tearing and degeneration of the cervical intervertebral disc without any visible ...

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C4–C5 Internal Disc Disruption (IDD)
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Internal Disc Disruption (IDD) at the C4–C5 level is a form of cervical degenerative disc disease in which the inner nucleus pulposus and annulus fibrosus ...

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C3–C4 Internal Disc Disruption (IDD)
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An internal disc disruption at the C3–C4 level—often called C3–C4 IDD—is a tear or degeneration of the soft, jelly-like core (nucleus pulposus) of the C3–C4 ...

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Internal Disc Disruption at the C2–C3
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An internal disc disruption at the C2–C3 level refers to damage within the intervertebral disc—specifically, fissuring of the annulus fibrosus and distortion ...

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C1–C2 Internal Disc Disruption
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Internal disc disruption (IDD) at the C1–C2 level refers to microscopic tears and degeneration within the nucleus pulposus and inner annulus fibrosus of the ...

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Cervical Internal Disc Disruption
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Cervical Internal Disc Disruption (CIDD) is a condition in which the inner layers of a cervical (neck) intervertebral disc tear or degenerate. It can cause ...

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Internal Disc Disruption
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Internal disc disruption (IDD), often called “discogenic pain,” is a condition in which the inner structure of an intervertebral disc becomes damaged—even ...

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Cervical Vertebral Hypointensity
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Cervical hypointense vertebrae describe areas of unusually low signal intensity (dark appearance) within the cervical (neck) vertebral bones on magnetic ...

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Persistent Spinal Pain Syndrome
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Persistent Spinal Pain Syndrome (PSPS) is a chronic pain condition characterized by persistent or recurrent spinal pain lasting longer than three months, which ...

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Persistent Postoperative Back Pain
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Persistent postoperative back pain—also known as failed back surgery syndrome (FBSS) or Persistent Spinal Pain Syndrome (PSPS) Type 2—is defined as new or ...

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Post-Surgical Back Bain
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Post-surgical back pain, often termed Failed Back Surgery Syndrome (FBSS) or Post-Laminectomy Syndrome, refers to persistent or new low back pain following one ...

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Post-Surgical (Iatrogenic) Wedge Fracture
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A post-surgical (iatrogenic) wedge fracture is a collapse of the front (anterior) part of a spinal vertebral body that occurs as an unintended consequence of ...

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Degenerative Disc Disease–Associated Wedging
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Degenerative disc disease (DDD) is a condition where the intervertebral discs—the cushions between the vertebrae—gradually lose height, hydration, and ...

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Osteoporotic Wedge Fracture
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An osteoporotic wedge fracture is a type of vertebral compression fracture in which the front (anterior) portion of the vertebral body collapses, forming a ...

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Cervical Congenital Hemivertebra
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Congenital hemivertebra is a spinal anomaly in which one half of a vertebral body fails to form, resulting in a wedge-shaped vertebra and often leading to ...

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Lateral Wedging of Cervical Vertebrae
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Lateral wedging of cervical vertebrae refers to an asymmetrical tilt or “wedge” shape of one or more vertebral bodies in the neck. This subtle deformity can ...

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Posterior Wedging of Cervical Vertebrae
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Posterior wedging of cervical vertebrae is an abnormal shape of one or more neck bones (vertebrae) in which the back (posterior) edge of the vertebral body is ...

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Anterior Wedging of Cervical Vertebrae
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Anterior wedging of cervical vertebrae occurs when the front (anterior) part of one or more neck vertebral bodies collapses or becomes shorter than the back, ...

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Cervical Wedging
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Cervical wedging is a condition in which one or more of the cervical (neck) vertebral bodies develop a triangular, “wedge-shaped” deformity, most often with ...

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Cervical Postsurgical Spondylolisthesis
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Cervical postsurgical spondylolisthesis is a condition in which, following cervical spine surgery (such as laminectomy or corpectomy), one vertebra slides ...

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Cervical Pathological Spondylolisthesis
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Cervical pathological spondylolisthesis is a condition in which one of the neck vertebrae (typically C3–C7) slips forward or backward over the adjacent ...

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Cervical Traumatic Spondylolisthesis
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Cervical traumatic spondylolisthesis—commonly referred to as a Hangman’s fracture—is a specific type of spinal injury in which the second cervical vertebra ...

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Cervical Degenerative Spondylolisthesis
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Cervical degenerative spondylolisthesis is a condition in which one vertebra in the neck (cervical spine) slips forward relative to the vertebra below it due ...

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Cervical Isthmic Spondylolisthesis
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Cervical isthmic spondylolisthesis is a condition in which a vertebra in the neck (cervical spine) slips forward over the one below it due to a defect or ...

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Cervical Dysplastic (Congenital) Spondylolisthesis
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Cervical dysplastic (congenital) spondylolisthesis (CDS) is a rare condition in which a cervical vertebra slips forward due to developmental malformation of ...

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Cervical Rotatory Spondylolisthesis
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Cervical rotatory spondylolisthesis is a condition in which one cervical vertebra (neck bone) twists and slips forward or backward over the vertebra below it, ...

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Cervical Lateral Spondylolisthesis
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Cervical lateral spondylolisthesis is a spinal condition in which one vertebra in the neck region shifts sideways (laterally) relative to the one below it, ...

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Cervical Spondylolisthesis C7 over T1
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Cervical spondylolisthesis occurs when one vertebra in your neck (cervical spine) slips forward or backward relative to the one below it. When this happens at ...

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Cervical Spondylolisthesis at C6–C7
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Cervical spondylolisthesis at C6–C7 occurs when the sixth cervical vertebra slips forward over the seventh, potentially compressing nerve roots or the spinal ...

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Cervical Spondylolisthesis C5 over C6
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Cervical spondylolisthesis occurs when one vertebra in the neck (cervical spine) slips forward or backward over the one below it. When this slip involves the ...

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C3 over C4 Spondylolisthesis
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Cervical spondylolisthesis occurs when one vertebra in the neck slips forward or backward over the one below it. Specifically, C3 over C4 spondylolisthesis ...

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Cervical Spondylolisthesis at C2–C3
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Cervical spondylolisthesis at C2–C3 is a condition where the second cervical vertebra (C2) slips forward relative to the third vertebra (C3). This forward slip ...

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Cervical Spondylolisthesis at C1on C2
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Cervical spondylolisthesis at C1–C2 occurs when the top neck bone (atlas, or C1) slips forward in relation to the second bone (axis, or C2). This misalignment ...

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Cervical Spondylolisthesis
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Cervical spondylolisthesis is the forward, backward, or lateral slipping of one neck (cervical) vertebra over another. This displacement can pinch nerves, ...

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C7–T1 Retrolisthesis
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A clear, evidence-based guide in simple, plain English for patients, students, and health writers. This comprehensive article covers anatomy, types, causes, ...

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Cervical Retrolisthesis at C6 over C7
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Cervical retrolisthesis at C6 over C7 is a backward slipping of the sixth cervical vertebra (C6) relative to the seventh (C7). Unlike a normal spine alignment ...

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Cervical Retrolisthesis at C5 over C6
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Cervical retrolisthesis at C5 over C6 occurs when the fifth cervical vertebra (C5) shifts backward relative to the sixth cervical vertebra (C6). This ...

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Retrolisthesis at C3 on C4
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Cervical retrolisthesis at C3–C4 is a spinal condition in which the C3 vertebral body shifts backward relative to the C4 vertebra by at least a fraction of its ...

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C2 over C3 Retrolisthesis
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Cervical retrolisthesis occurs when one vertebra in the neck (cervical spine) shifts backward relative to the one below. In C2 over C3 retrolisthesis, the ...

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Cervical Retrolisthesis at the C1–C2
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Cervical retrolisthesis at the C1–C2 level occurs when the first cervical vertebra (atlas) shifts slightly backward relative to the second cervical vertebra ...

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Cervical Retrolisthesis
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Cervical retrolisthesis is a condition in which one or more of the neck (cervical) vertebrae slip backward relative to the one below it. This backward ...

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Backward Slip C7 over T1
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A backward slip of the C7 vertebra over the T1 vertebra—also called retrolisthesis at C7–T1 or C7–T1 backward slippage—occurs when the seventh cervical ...

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Backward Slip of C6 over C7
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Backward slip of C6 over C7, also known as C6–C7 retrolisthesis, is a condition in which the sixth cervical vertebra (C6) shifts backward relative to the ...

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Backword Slip C5 over C6
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A backward slip of C5 over C6, medically called retrolisthesis, occurs when the fifth cervical vertebra shifts backwards relative to the sixth. This ...

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Backward Slip of C4 over C5
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A backward slip of C4 over C5, also known as cervical spondylolisthesis at the C4–C5 level, occurs when the fourth cervical vertebra (C4) shifts backward ...

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Backward Slip of C3 on C4
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Retrolisthesis of C3 over C4 (also called backward slip of C3 on C4) occurs when the third cervical vertebra (C3) shifts slightly backward relative to the ...

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Backward Slip of C2 over C3 (C2–C3 Retrolisthesis)
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A backward slip of the second cervical vertebra (C2) over the third cervical vertebra (C3), medically called C2–C3 retrolisthesis, is a condition in which C2 ...

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Backward Slip of C1 over C2
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A backward slip of the first cervical vertebra (atlas, C1) over the second cervical vertebra (axis, C2) is commonly known as atlantoaxial instability or ...

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Backward Slip of a Cervical Vertebra
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A backward slip of a cervical vertebra—also called cervical retrolisthesis—is a condition where one of the seven neck vertebrae shifts posteriorly (toward the ...

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Cervical Repetitive Neck Strain
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Cervical repetitive neck strain (CRNS) is a common condition caused by repeated overuse or awkward positioning of the neck. Over time, tiny injuries accumulate ...

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Cervical Pathologic Anterolisthesis
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Cervical Pathologic Anterolisthesis is a condition in which one vertebra in the neck (cervical spine) slips forward over the one below it due to underlying ...

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Cervical Spondylolytic Anterolisthesis
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Cervical spondylolytic anterolisthesis is a condition in which a cervical vertebra (one of the bones in the neck) slips forward over the vertebra below it ...

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Cervical Iatrogenic/Post-Surgical Anterolisthesis
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Cervical iatrogenic/post-surgical anterolisthesis is a forward slipping of one vertebra over the one below it in the neck region, which develops as a ...

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Cervical Traumatic Anterolisthesis
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Cervical traumatic anterolisthesis is a forward slippage of one vertebra over the one below it in the neck (cervical spine), caused by sudden injury. This ...

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Cervical Degenerative Anterolisthesis
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Cervical degenerative anterolisthesis is a condition in which one vertebra in the neck (cervical spine) slips forward over the one below it because of ...

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Cervical Isthmic Anterolisthesis
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Cervical Isthmic Anterolisthesis is a rare spinal condition in which one of the cervical (neck) vertebrae slips forward (anterolisthesis) relative to the one ...

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Cervical Dysplastic Anterolisthesis
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Cervical Dysplastic (Congenital) Anterolisthesis is a condition in which one of the neck (cervical) vertebrae slips forward over the one below it due to a ...

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Cervical Anterolisthesis C7 over T1
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Cervical anterolisthesis is a condition where one cervical vertebra slips forward relative to the one immediately below it. In the case of C7 over T1, the ...

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Cervical Anterolisthesis C6 over C7
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Cervical anterolisthesis occurs when one vertebra in the neck slides forward over the one below it. In the case of C6 over C7, the sixth cervical vertebra ...

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Cervical Anterolisthesis C5 over C6
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Cervical anterolisthesis at C5–C6 happens when the C5 vertebra slips forward over C6, disrupting normal alignment in the neck. This forward shift can pinch ...

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Cervical Anterolisthesis at C4 over C5
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Cervical anterolisthesis at C4 over C5 is a spinal condition in which the fourth cervical vertebra (C4) slips forward relative to the fifth cervical vertebra ...

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Cervical Anterolisthesis C3 over C4
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Cervical anterolisthesis is a condition in which one vertebra in the neck (cervical spine) slips forward relative to the adjacent vertebra below it. When this ...

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Cervical Anterolisthesis at the C2–C3
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Cervical anterolisthesis at C2 over C3 occurs when the second cervical vertebra (axis) slips forward relative to the third cervical vertebra (C3). This forward ...

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Cervical Anterolisthesis C1 Over C2
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Cervical anterolisthesis at C1 over C2 occurs when the atlas (first cervical vertebra) slips forward relative to the axis (second cervical vertebra). This ...

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Cervical Anterolisthesis
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Cervical anterolisthesis is a condition in which one vertebra in the neck (cervical spine) slips forward on the vertebra below it. This forward displacement ...

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Anterolisthesis
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Anterolisthesis is a condition in which one vertebra in the spine slips forward over the one beneath it. This forward displacement most often occurs in the ...

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Forward Slip of C7 over T1
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Forward slip of C7 over T1, medically known as anterolisthesis at the cervicothoracic junction (CTJ), occurs when the C7 vertebral body moves excessively ...

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Forward Slip at C6–C7
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Forward slip of C6 over C7—also called C6–C7 cervical anterolisthesis—is when the sixth cervical vertebra (C6) moves forward relative to the seventh (C7). This ...

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