Peripheral Mononeuropathy - Radial Nerve Palsy

Question 1

Clinical Features of Radial Nerve Palsy (2).

Answer 1

1. Motor : Triceps Brachii and Posterior (Extensor) Compartment of Forearm - Unopposed Flexion of Wrist = Wrist-Drop.
2. Sensory Loss over Radial Nerve Distribution (Dorsal Lateral 3.5 Fingers).

Question 2

Aetiology of Radial Nerve Palsy (3).

Answer 2

1. Dislocation at Shoulder.
2. Fracture of Proximal Humerus.
3. Fracture of Humeral Shaft in Radial Groove.

Question 3

Patterns of Radial Nerve Injury (3).

Answer 3

1. Very High Lesions : Impingement e.g. Crutches, Saturday Night Palsy.
2. High Lesions : Humeral Shaft Fracture.
3. Low Lesions : Fracture in Forearm e.g. Finger Drop.