05/16/2025
🔈SHOULDER PAIN EXPLAINED
Shoulder pain, often associated with impingement, results from compression or irritation of structures within the shoulder joint. Three main types of shoulder impingement are:
1. Primary External Impingement:
- Compression of rotator cuff tendons and the subacromial bursa between the humeral head and acromion.
- Common in activities involving repetitive overhead motions.
2. Secondary External Impingement:
- Related to shoulder joint instability or abnormal motion.
- Caused by factors like muscle imbalances, weakness, or poor scapular control.
3. Internal Impingement:
- Compression within the shoulder joint, affecting rotator cuff tendons and the articular side.
- Often observed in athletes performing repetitive overhead motions, such as throwing athletes.
Referred pain to the shoulder can stem from the cervical and thoracic spine:
1. Referred Pain from Cervical Spine:
- Due to conditions like cervical radiculopathy, herniated discs, or foraminal stenosis.
- Involves muscles in the neck (trapezius, levator scapulae, and rhomboids) and nerves (brachial plexus and cervical nerves).
2. Referred Pain from Thoracic Spine:
- Less common than cervical spine-related pain.
- Associated with conditions like thoracic disc herniation or nerve compression.
- Involves muscles in the upper back (trapezius and rhomboids) and thoracic spinal nerves.
Neural Involvement:
- Neural issues may arise when nerves from the spinal cord are affected, particularly the brachial plexus.
- Nerve compression or irritation along the brachial plexus can lead to pain, tingling, or numbness radiating into the shoulder and upper extremities.