Splenius Capitis Atrophy

Splenius capitis atrophy means the splenius capitis muscle in the back of the neck becomes smaller and weaker over time. This can happen when the muscle is not used enough, loses its nerve supply, or is damaged by disease or injury.

---

Anatomy of the Splenius Capitis Muscle

Understanding the normal anatomy helps explain why and how atrophy occurs.

Structure & Location

• The splenius capitis is a flat, broad muscle on the back of your neck.

• It lies deep (under) the trapezius muscle and covers deeper neck muscles TeachMeAnatomy.

Origin

• Arises from the lower part of the nuchal ligament and the spinous processes of the C7 to T3/T4 vertebrae TeachMeAnatomy.

Insertion

• Inserts onto the mastoid process of the temporal bone and the lateral third of the superior nuchal line of the occipital bone Home.

Blood Supply

• Receives blood mainly from muscular branches of the occipital artery (branch of the external carotid) and from the deep cervical artery Kenhub.

Nerve Supply

• Innervated by the lateral branches of the posterior (dorsal) rami of the C2 and C3 spinal nerves Kenhub.

 Functions ( Key Actions)

1. Head Extension (tilts head backward) when both sides work together.

2. Lateral Flexion (bends head to the same side) when only one side works.

3. Ipsilateral Rotation (rotates head toward the same side).

4. Posture Support (helps hold head upright).

5. Jaw Stabilization (aids opening the lower jaw slightly).

6. Assists Deep Neck Muscles (works with splenius cervicis) Verywell Health.

---

Types of Splenius Capitis Atrophy

Muscle atrophy is classified by how it happens:

1. Physiologic Atrophy – normal loss in muscle size with aging.

2. Disuse Atrophy – from not using the muscle enough (e.g., long bed rest) Cleveland Clinic.

3. Neurogenic Atrophy – due to nerve injury or disease (most severe) MedlinePlus.

4. Endocrine Atrophy – linked to hormonal problems (e.g., Cushing’s disease) MedlinePlus.

5. Cachexia-Related Atrophy – from long-term illness like cancer or HIV/AIDS Medical News Today.

---

Causes of Splenius Capitis Atrophy

Muscle atrophy in the splenius capitis can result from many conditions:

1. Sedentary Lifestyle (no regular neck exercise) Healthgrades

2. Prolonged Bed Rest (after injury or surgery) Cleveland Clinic

3. Stroke (loss of nerve signals) MedlinePlus

4. Spinal Cord Injury (nerve damage) MedlinePlus

5. Cervical Radiculopathy (nerve root compression)

6. Peripheral Neuropathy (e.g., diabetes)

7. Motor Neuron Diseases (e.g., ALS) MedlinePlus

8. Muscular Dystrophy (genetic muscle loss) NICHD

9. Autoimmune Myositis (muscle inflammation) MedlinePlus

10. Endocrine Disorders (Cushing’s, hyperthyroid) MedlinePlus

11. Malnutrition (not enough protein/calories)

12. Aging (Senile Atrophy)

13. Alcohol-Associated Myopathy MedlinePlus

14. Drug-Induced Myopathy (e.g., statins, steroids) MedlinePlus

15. Cancer Cachexia Medical News Today

16. Chronic Inflammation (e.g., rheumatoid arthritis) PMC

17. Neuromuscular Junction Disorders (e.g., myasthenia gravis) MedlinePlus

18. Infection (viral myositis)

19. Space Flight Microgravity (rare) MedlinePlus

20. Genetic Syndromes (e.g., spinal muscular atrophy) MedlinePlus

---

Symptoms of Splenius Capitis Atrophy

Signs you may notice when this muscle shrinks:

1. Neck Pain

2. Muscle Weakness (reduced force when turning head) Medical News Today

3. Visible Wasting (smaller muscle bulk)

4. Reduced Range of Motion (difficulty looking up/down)

5. Headache (tension-type) MedCentral

6. Stiffness in Neck

7. Neck Fatigue (tire quickly)

8. Muscle Cramping

9. Tenderness to Touch

10. Postural Changes (forward head posture)

11. Clicking or Popping (when moving head)

12. Nerve Pain (radiating into scalp) Physiopedia

13. Difficulty Holding Head Up

14. Muscle Fasciculations (twitches)

15. Balance Problems (due to poor head control)

16. Jaw Discomfort (minor) Samarpan Physiotherapy Clinic

17. Sleep Disturbance (pain wakes you)

18. Increased Risk of Neck Injury

19. Swelling (rare)

20. Dry Skin Over Muscle (from reduced circulation)

---

 Diagnostic Tests

How doctors check for splenius capitis atrophy:

1. Medical History & Physical Exam

2. Inspection & Palpation (look and feel muscle)

3. Range of Motion Testing

4. Muscle Strength Grading (0–5 scale)

5. Electromyography (EMG) Longevity Technology

6. Nerve Conduction Studies (NCS) Longevity Technology

7. Ultrasound Imaging (measures muscle thickness)

8. Magnetic Resonance Imaging (MRI)

9. Computed Tomography (CT) Scan

10. Dual-Energy X‑Ray Absorptiometry (DEXA) (lean mass) Longevity Technology

11. Muscle Biopsy (tissue analysis)

12. Blood Tests (creatine kinase, inflammatory markers)

13. Genetic Testing (if inherited disorder suspected)

14. Hormone Levels (cortisol, thyroid)

15. Electrolyte Panel

16. Vitamin D & B12 Levels

17. Postural Assessment

18. Gait Analysis (head and neck stability)

19. Strength Dynamometry (objective force measurement)

20. Fatigue Assessment Scales

---

Non‐Pharmacological Treatments

Simple, drug‐free ways to help heal and strengthen:

1. Neck Strengthening Exercises (isometric holds)

2. Stretching Routines (gentle neck stretches)

3. Physical Therapy (guided plan) Medical News Today

4. Heat Therapy (warm packs)

5. Cold Therapy (ice packs)

6. Massage Therapy (manual release)

7. Myofascial Release

8. Trigger Point Therapy triggerpointsecrets.com

9. TENS (electrical stimulation)

10. NMES (neuromuscular electrical stimulation)

11. Ultrasound Therapy

12. Cryotherapy

13. Acupuncture

14. Dry Needling

15. Chiropractic Adjustments

16. Yoga for Neck

17. Pilates for Posture

18. Aquatic Therapy

19. Ergonomic Workstation Setup

20. Postural Education

21. Balance & Proprioception Training

22. Breathing Exercises

23. Biofeedback

24. Relaxation Techniques (deep breathing)

25. Mindfulness & Meditation

26. Occupational Therapy

27. Neck Brace (short‑term)

28. Hydrotherapy

29. Diet & Nutrition Counseling

30. Lifestyle Modification (reduce strain)

---

Drugs Used in Treatment

Medications to reduce pain, inflammation, or help nerve health:

1. NSAIDs (ibuprofen, naproxen)

2. Acetaminophen

3. Muscle Relaxants (cyclobenzaprine)

4. Antiepileptics for Nerve Pain (gabapentin)

5. Antidepressants for Pain (duloxetine)

6. Topical Analgesics (lidocaine patches)

7. Corticosteroids (oral or injections)

8. Vitamin D Supplements

9. B‑Complex Vitamins (nerve support)

10. Calcium Supplements

11. Magnesium Supplements

12. Anabolic Steroids (rare, under specialist)

13. Testosterone Therapy (if low)

14. Growth Hormone (in specific cases)

15. Creatine Supplements

16. Omega‑3 Fatty Acids (anti‑inflammatory)

17. Cyclooxygenase‑2 Inhibitors (celecoxib)

18. Opioids (short course for severe pain)

19. Immunosuppressants (for myositis)

20. Biologics (e.g., anti‑TNF for arthritis‑related cases)

---

Surgical Options

When conservative care fails or in severe nerve damage:

1. Cervical Nerve Decompression (for radiculopathy)

2. Foraminotomy (opens nerve passage)

3. Discectomy (removes herniated disc)

4. Laminectomy (spinal canal widening)

5. Spinal Fusion (stabilizes vertebrae)

6. Nerve Repair or Grafting (for traumatic injury)

7. Tendon Transfer (redirects healthy muscle)

8. Fasciotomy (releases tight fascia)

9. Implantable Neurostimulator (pain control)

10. Muscle Flap Surgery (rebuilds severe defects)

---

Preventive Measures

Tips to keep the splenius capitis strong:

1. Regular Neck Exercises

2. Good Posture (avoid slouching)

3. Ergonomic Workstations

4. Take Frequent Breaks (avoid static positions)

5. Healthy Diet (adequate protein)

6. Stay Hydrated

7. Maintain a Healthy Weight

8. Avoid Smoking

9. Limit Alcohol

10. Protect Neck in Sports (use proper gear)

---

When to See a Doctor

Seek medical help if you have:

• Neck pain or weakness lasting more than 2 weeks.

• Sudden severe pain, numbness, or tingling in the head.

• Noticeable muscle wasting or drooping.

• Loss of balance or coordination.

• Difficulty swallowing or breathing.

• Fever with neck pain.

• New pain after a neck injury or accident.

---

Frequently Asked Questions (FAQs)

1. What is splenius capitis atrophy?

   • When the splenius capitis muscle loses size and strength.

2. Can it be reversed?

   • Often yes, with proper exercise, therapy, and treating the cause.

3. How is it diagnosed?

   • By exam, imaging (MRI/ultrasound), EMG/NCS, and sometimes biopsy.

4. What exercises help?

   • Neck isometrics, gentle stretches, and strengthening under guidance.

5. Is surgery always needed?

   • No. Only for severe nerve or structural problems.

6. Are there side effects to treatments?

   • NSAIDs can upset your stomach; steroids can have many side effects.

7. How long does recovery take?

   • Weeks to months, depending on severity and treatment.

8. Can atrophy cause headaches?

   • Yes, tension from weak neck muscles often leads to headaches.

9. Will posture correction help?

   • Yes. Good posture reduces strain on neck muscles.

10. Are supplements useful?

    • Protein, vitamin D, and B vitamins can support recovery.

11. What specialists treat this?

    • Physiatrists, neurologists, orthopedists, or physical therapists.

12. Can stress worsen it?

    • Yes. Stress can increase muscle tension and pain.

13. Is massage safe?

    • Gentle therapeutic massage can help when done by a professional.

14. How do I prevent relapse?

    • Continue exercises and maintain good posture long‑term.

15. When should I worry about nerve damage?

    • If you get numbness, tingling, or sudden weakness—see a doctor right away.

Disclaimer: Each person’s journey is unique, treatment plan, life style, food habit, hormonal condition, immune system, chronic disease condition, geological location, weather and previous medical  history is also unique. So always seek the best advice from a qualified medical professional or health care provider before trying any treatments to ensure to find out the best plan for you. This guide is for general information and educational purposes only. Regular check-ups and awareness can help to manage and prevent complications associated with these diseases conditions. If you or someone are suffering from this disease condition bookmark this website or share with someone who might find it useful! Boost your knowledge and stay ahead in your health journey. We always try to ensure that the content is regularly updated to reflect the latest medical research and treatment options. Thank you for giving your valuable time to read the article.

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

Last Update: April 17, 2025.