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U. limbs N. injuries
nerve injuries of the upper limbs
| Question | Answer |
|---|---|
| Two major mechanism of injury of the Axillary nerve | Fracture of the surgical nerve of the humerus and shoulder dislocation |
| Which nerve is injured in wrist drop? | Radial nerve |
| Which nerve is involve in crutch injury or Saturday night palsy | Radial nerve |
| mechanism of injury of the radial nerve in the axilla | Upward pressure on the floor of the axillary and shoulder dislocation |
| A patient is unable to raise his arms from 15 to 90 degrees which muscle and nerve are involved? | Deltoids,Axillary nerve |
| Which related muscle is not affected in a radial nerve injury caused by mid-shaft fracture of the humerus | Triceps (elbow extension is not lost) |
| A radial nerve damage caused by a fracture or dislocation of the head of the radius will cause which lost of function? | weakened supination,weakness of extensors of the digits, sensory loss on posterior forearm and hand. |
| Which related muscles are not affected in a radial nerve injury caused by fracture of dislocation of the head of the radius? | Extensors of the wrist (wrist drop is not present) |
| Which related function is affected by a radial nerve injury caused by laceration or compression of the back of the wrist? | Skin sensation to the posterior side of the hand (remember there are no muscles in the back of the hand). |
| Which muscles and nerve are responsible for clowing of digits 2 and 3? | lumbricals 1 and 2. supplied by the median nerve |
| What is the function of lumbricals? | flexion of the metacarpo-phalangeal joint while simultaneously extending the interphalangeal joint. |
| which muscle and nerve are involve in Ape hand? | opponent policies, median nerve |
| What nerve is involved in ulnar deviation of the wrist during flexion? | median nerve |
| What nerve is involved in median deviation of the wrist during flexion? | ulnar nerve |
| Explain the preacher's hand | loss of flexion of digits 1,2and 3 caused by a median nerve injury at the elbow. Digit 4 and 5 can still flex because of the ulnar portion of flexor digittorum profoundus. |
| What is the mechanism of injury of the median nerve at the elbow? | suprachondylar fracture of the humerus |
| Which nerves are involved in the surgical neck, mid-shaft,and suprachondylar fracture of the humerus? | axillary nerve, radial nerve and median nerve respectively. |
| What are the 2 major mechanisms of median nerve injury at the level of the wrist? | carpal tunnel compression and wrist laceration. |
| which anomalies are present in the median nerve injury at the elbow but not the wrist? | ulnar deviation of the wrist during flexion, and the sign of benediction |
| what is the main function of the ulnar nerve in the hands? | fine motor control (adductors and abductor muscles of the hands). |
| Which nerve and muscles are involve in clowing of digits 4 and 5? | lumbricals 3 and 4, ulnar nerve. |
| which nerves are involved in clowing of digits 2,3,4 and 5? | C8, T1 |
| what is the mechanism of injury of the ulnar nerve? | Blunt trauma to the heel of the hand (unlar nerve passes superficial to the carpal tunnel). |
Created by:
sorykaba
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