Splenius Capitis Injuries

Anatomy
Types of Splenius Capitis Injuries
Common Causes
Symptoms
Diagnostic Tests
Non‑Pharmacological Treatments
Drugs
Surgical Interventions
Prevention Strategies
When to See a Doctor
Frequently Asked Questions

A splenius capitis injury refers to damage or strain of the splenius capitis muscle, a band‑shaped muscle at the back of your neck. When this muscle is overstretched, torn, or develops painful trigger points, it can cause neck pain that often feels like a tension headache or migraine. This condition is also called splenius capitis syndrome or neck muscle strain

Anatomy

Structure & Location

The splenius capitis is a superficial intrinsic muscle of the upper back and neck. It lies just beneath the trapezius and above deeper muscles like semispinalis capitis Kenhub.

Origin & Insertion

Origin: Lower half of the nuchal ligament and spinous processes of C7–T3 vertebrae.
Insertion: Mastoid process of the temporal bone and lateral third of the superior nuchal line of the occipital bone Kenhub.

Blood Supply

Receives blood from muscular branches of the occipital artery (a branch of the external carotid artery) Kenhub.

Nerve Supply

Innervated by the lateral branches of the posterior rami of the second and third cervical spinal nerves (C2–C3) Kenhub.

Key Functions

Bilateral Extension: Straightens or tilts the head back.
Ipsilateral Rotation: Turns the head toward the same side.
Ipsilateral Lateral Flexion: Bends the neck sideways toward the same side.
Postural Support: Helps maintain an upright head position.
Stabilization: Works with other neck muscles to stabilize the head during movement.
Jaw Assistance: May assist in opening the lower jaw in some individuals Samarpan Physiotherapy ClinicKenhub.

Types of Splenius Capitis Injuries

Acute Strain (Grade I): Mild overstretch without tear.
Moderate Strain (Grade II): Partial muscle fiber tear.
Severe Strain (Grade III): Complete muscle rupture.
Myofascial Pain Syndrome: Painful trigger points in the muscle.
Chronic Overuse Injury: Gradual onset from repeated stress.
Contusion: Direct blow causing muscle bruise.
Whiplash‑Associated Disorder: Sudden neck extension/flexion injury.
Tendinopathy: Degeneration of tendon near the muscle insertion.
Muscle Spasm: Involuntary sustained contraction.
Myositis: Rare inflammatory condition.
Referred Pain Disorder: Pain originating elsewhere but felt in splenius capitis.
Post‑surgical Adhesion: Scar tissue from neck surgery.
Trigger Point Syndrome: Localized hyperirritable spots.
Neuropathic Pain: Secondary to nerve involvement.
Cervical Disc Injury‑Related Spasm: Secondary muscle guarding.
Postural Syndrome: From prolonged improper posture.
Degenerative Cervical Arthritis‑Related Spasm: Muscle tightness around arthritic joints.
Cervical Radiculopathy‑Related Spasm: Muscle guarding from nerve root compression.
Infection‑Related Myositis: Very rare, muscle infection.
Neoplasm‑Related Spasm: Rare muscle involvement from tumors orthoinfo.aaos.org.

Common Causes

Poor posture (“text neck”)
Whiplash in car accidents
Sleeping with an awkward pillow
Repetitive desk/computer work
Heavy lifting without support
Sudden jerking movements
Sports collisions
Direct neck trauma (falls, hits)
Stress and muscle tension
Degenerative cervical spine changes
Osteoarthritis of neck joints
Muscle imbalances (weak deep flexors)
Prolonged static head position
Inadequate warm‑up before exercise
Carrying heavy bags on one shoulder
Prolonged driving with head turned
Sedentary lifestyle
Scar tissue from prior surgery
Trigger points from other neck muscles
Underlying infection or systemic illness MedshunSELF.

Symptoms

Dull or sharp neck pain
Stiffness and reduced range of motion
Tenderness on back of neck
Radiating pain to shoulder or upper back
Headaches at the base of skull
Muscle spasm or knot
Pain worse with head movement
Pain on one side or both sides
Muscle weakness in neck
Sensation of tight band around neck
Difficulty turning head side to side
Referred pain to forehead or temple
Pain when pressing on trigger points
Difficulty sleeping due to pain
Grinding or creaking sounds (crepitus)
Numbness or tingling (if nerve involved)
Fatigue of neck muscles
Bruising (in contusions)
Pain aggravated by stress
Worsening pain after activity Mayo ClinicMedshun.

Diagnostic Tests

Medical History & Physical Exam – assesses pain pattern and triggers.
Range of Motion Tests – checks flexibility and pain reproduction.
Palpation – finds tender points or knots.
Neurological Exam – tests reflexes, strength, sensation.
Spurling’s Test – screens for nerve root compression.
Imaging: X‐ray – rules out bone injury or arthritis.
Imaging: MRI – shows soft tissue damage or disc issues.
Imaging: CT Scan – detailed bone and joint views.
Ultrasound – visualizes muscle tears or fluid.
Electromyography (EMG) – tests nerve conduction.
Nerve Conduction Study – measures speed of nerve signals.
Diagnostic Nerve Block – confirms nerve‑related pain.
Thermography – identifies areas of inflammation.
Diagnostic Ultrasound Elastography – assesses muscle stiffness.
Pain Pressure Threshold Algometry – quantifies pain sensitivity.
Trigger Point Injection Test – anesthesia injection to confirm trigger points.
Blood Tests – rules out infection or inflammatory arthritis.
Rheumatologic Panel – screens for autoimmune causes.
Facet Joint Block – checks for facet joint pain.
Myofascial Release Assessment – specialist manual evaluation Mayo ClinicSpine-health.

Non‑Pharmacological Treatments

Rest and activity modification
Cold packs (first 48 hours)
Heat therapy (after 48 hours)
Gentle neck stretching
Strengthening deep neck flexors
Posture correction training
Ergonomic workstation setup
Physical therapy exercises
Manual therapy (mobilization)
Soft‑tissue massage
Trigger point dry needling
Acupuncture sessions
Transcutaneous electrical nerve stimulation (TENS)
Ultrasound therapy
Cold laser (low‑level laser) therapy
Hydrotherapy (warm water exercises)
Cervical traction (home or clinic)
Foam rolling upper back
Kinesiology taping
Biofeedback for muscle relaxation
Yoga and Pilates for neck strength
Stress management and mindfulness
Breathing exercises (diaphragmatic)
Cervical collar (short‑term)
Post‑exercise ice/heat contrast baths
Cupping therapy
Education on body mechanics
Proprioceptive training (balance)
Dry heat packs
Ergonomic pillow and mattress choice orthoinfo.aaos.orgKaiser PermanentePhysioMantra.

Drugs

Ibuprofen (Advil) – NSAID
Naproxen (Aleve) – NSAID
Diclofenac – NSAID
Celecoxib (Celebrex) – COX‑2 inhibitor
Acetaminophen (Tylenol) – analgesic
Cyclobenzaprine – muscle relaxant
Methocarbamol – muscle relaxant
Tizanidine – muscle relaxant
Amitriptyline – tricyclic antidepressant (chronic pain)
Duloxetine (Cymbalta) – SNRI for chronic pain
Gabapentin – neuropathic pain agent
Pregabalin – neuropathic pain agent
Topical Diclofenac Gel
Topical Ibuprofen Gel
Capsaicin Cream
Lidocaine Patch
Tramadol – opioid analgesic (short‑term)
Hydrocodone/Acetaminophen (Vicodin) – opioid
Steroid Injections (cervical)
Botulinum Toxin A (for severe spasm) Cleveland ClinicMayo Clinic.

Surgical Interventions

Percutaneous Radiofrequency Neurotomy – ablates medial branch nerves to facets Medscape.
Cervical Discectomy & Fusion – removes a damaged disc and fuses vertebrae Medscape.
Cervical Foraminotomy – enlarges neural foramen to relieve nerve root compression Mayo Clinic.
Laminectomy/Laminoplasty – removes or reshapes part of vertebral arch to decompress spinal cord Mayo Clinic.
Posterior Cervical Fusion – stabilizes vertebrae by fusing them Medscape.
Facet Joint Rhizotomy – severs facet nerve supply for chronic pain Medscape.
Muscle Release Surgery – rare direct surgical repair of severe splenius capitis tear Mayo Clinic.
Artificial Cervical Disc Replacement – replaces damaged disc with prosthesis Mayo Clinic.
Soft‑Tissue Decompression – removal of scar tissue around muscle Mayo Clinic.
Selective Dorsal Rhizotomy – cuts selected nerve roots to relieve spasm Medscape.

Prevention Strategies

Set up ergonomic desk and screen height Cleveland Clinic.
Use a supportive, properly aligned pillow MyHealth Alberta.
Practice good posture when sitting and standing Cleveland Clinic.
Take regular breaks from static positions orthoinfo.aaos.org.
Warm up before sports or exercise Medshun.
Strengthen deep neck and upper back muscles PhysioMantra.
Learn safe lifting techniques Cleveland Clinic.
Manage stress to reduce muscle tension Medshun.
Avoid carrying heavy bags on one shoulder Cleveland Clinic.
Maintain a healthy weight Cleveland Clinic.

When to See a Doctor

Seek medical care if you experience any of the following:

Severe neck pain after trauma
Pain lasting more than 2 weeks despite home care
Numbness, tingling, or weakness in arms
Difficulty swallowing or breathing
Fever with neck pain (infection concern)
Sudden headache at the back of your head
Loss of bladder or bowel control (rare emergency)
Pain that wakes you at night
Unintended weight loss with neck pain
Swelling or visible deformity Mayo Clinic.

Frequently Asked Questions

What is a splenius capitis injury?
A sprain, tear, or painful trigger point in the splenius capitis muscle at the back of your neck Verywell Health.
What causes splenius capitis pain?
Common reasons include poor posture, whiplash, repetitive strain, and muscle imbalances Cleveland Clinic.
How long does recovery take?
Mild strains improve in 1–2 weeks; moderate takes 4–6 weeks; severe tears may need months and possibly surgery eMedicineHealth.
Can splenius capitis injury cause headaches?
Yes, trigger points often refer pain to the head, mimicking migraines MedCentral.
Is imaging always needed?
No. Most cases diagnose with exam; imaging is for persistent or severe symptoms Mayo Clinic.
Are neck collars helpful?
Short‑term use (1–2 days) may reduce pain, but long use can weaken muscles Mayo Clinic.
Can massage cure this injury?
Massage can relieve spasms and trigger points but is rarely a standalone cure orthoinfo.aaos.org.
Which exercises help?
Gentle stretching and deep neck strengthening exercises taught by a therapist are best Kaiser Permanente.
When are injections used?
For chronic trigger points or facet pain, steroid or anesthetic injections may be tried Mayo Clinic.
Is surgery common?
No, surgery is rare and reserved for severe tears or nerve compression unresponsive to care Mayo Clinic.
Can stress make it worse?
Yes, stress increases muscle tension and risk of spasms Medshun.
Should I stop working or exercising?
Modify activities; avoid pain‑provoking moves but stay as active as comfort allows eMedicineHealth.
Does posture really matter?
Absolutely. Good posture reduces constant strain on the muscle Verywell Health.
Can this injury come back?
Yes, without prevention like ergonomics and exercise, recurrences are common Cleveland Clinic.
Are over‑the‑counter drugs enough?
Often yes for mild pain (NSAIDs, acetaminophen). Prescription meds may be needed for moderate to severe pain

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The article is written by Team Rxharun and reviewed by the Rx Editorial Board Members

Last Update: April 17, 2025.

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