Table 1. Entrapment neuropathies.4.
| Nerve | Site of entrapment |
|---|---|
| Suprascapular | Spinoglenoid notch |
| Lower trunk or medial cord of brachial plexus | Cervical rib or band at thoracic outlet (neurogenic thoracic outlet syndrome) |
| Median | |
| Wrist | Carpal tunnel |
| Elbow | Between heads of pronator teres (pronator teres syndrome) |
| Ulnar | |
| Wrist | Guyon’s canal (ulnar tunnel) |
| Elbow | Bicipital groove, cubital tunnel |
| Posterior interosseous | Radial tunnel- at point of entrance into supinator muscle (arcade of Frohse) |
| Lateral femoral cutaneous (meralgia paraesthetica) | Inguinal ligament |
| Obturator | Obturator canal |
| Posterior tibial | Tarsal tunnel, medial malleolus-flexor retinaculum |
| Interdigital plantar (Morton’s metatarsalgia) | Plantar fascia (heads of 3rd and 4th metatarsals) |
Adapted from: Adams and Victor’s Principles of Neurology; 9th Edition; 2009; McGraw-Hill.4
Mechanisms of entrapment neuropathies