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به ليش Child يصيرله Median nerve injury مش Radial 😂😂😂

Why? Radial nerve runs in spiral groove of humeral shaft. Clinical clue: 1. Wrist drop 2. Loss of finger extension 3. Sensory loss on dorsum of hand

Shaft of humerus fracture → Radial nerve When? 1. Direct trauma to arm 2. Fall on flexed elbow 3. Road traffic accident 4. Adults

Why? Axillary nerve winds around the surgical neck of humerus. Clinical clue: 1. Loss of shoulder abduction (15–90°) 2. Flattened deltoid 3. Loss of sensation over “regimental badge area” Wind = يلتف

Surgical neck fracture → Axillary nerve When? 1. Fall on shoulder 2. Direct blow to shoulder 3. Common in elderly (osteoporosis)

تبوا تعرفوا امتا ينكسر او يصير injury لكل واحد فيهن

1. Surgical neck fracture → Axillary nerve. 2. Shaft fracture → Radial nerve 3. Supracondylar fracture (child) → Median nerve. 4. Medial epicondyle fracture → Ulnar nerve.

مش عارف هل حاسين بأهمية الجمل اللي نكتب فيهن بعد كل سؤال أو لا؟

Adult + direct trauma → Shaft fracture → Radial nerve → Wrist drop.

Fall on flexed elbow Direct trauma to arm This causes fracture of the shaft of humerus ➡️ Radial nerve is injured (because it is tightly wrapped around the shaft in the spiral groove)

... Here....

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Why different nerves are injured? 👉 Because mechanism of trauma determines direction of fracture displacement. 👉 Direction of displacement determines which nerve lies in the line of injury.

Kids FLY → fall with arm extended Adults FOLD → fall with elbow flexed

Children → fall on outstretched hand (extended elbow). Adults → fall on flexed elbow or direct trauma.

شن السبب ان في الكبار Radial