Nerve & Tendon MCQs

A 45-year-old mechanic complains of chronic, aching pain in the proximal lateral forearm without overt motor weakness, exacerbated by resisted forearm supination. The most common site of compression for the involved nerve is the:

A 6-year-old boy presents with an extension-type supracondylar humerus fracture. Radiographs demonstrate posterolateral displacement of the distal fragment. Which of the following neurologic structures is at greatest risk of injury?

A 6-year-old girl falls from monkey bars and sustains a displaced extension-type supracondylar humerus fracture with posteromedial displacement of the distal fragment. Which nerve is most commonly injured in this specific fracture pattern?

A 7-year-old girl falls directly onto a flexed elbow. Radiographs reveal a flexion-type supracondylar humerus fracture. Which of the following nerve injuries is most strongly associated with this specific fracture pattern?

A 7-year-old boy sustains a flexion-type supracondylar fracture of the humerus after falling onto a flexed elbow. Radiographs show anterior displacement of the distal fracture fragment. Which nerve is most commonly injured in this specific fracture pattern?

A 5-year-old girl falls from monkey bars and sustains a displaced extension-type supracondylar humerus fracture. Examination reveals she is unable to flex the interphalangeal joint of the thumb and the distal interphalangeal joint of the index finger. Which nerve is most likely injured?

A 5-year-old boy sustained a pediatric lateral condyle fracture of the distal humerus 2 years ago, which was treated non-operatively. He now presents with progressive cubitus valgus. Which of the following tardy nerve palsies is most likely to develop?

A 5-year-old child sustains a widely displaced (3 mm) lateral condyle fracture of the humerus. If left untreated and a nonunion develops, which of the following complications is most likely to present years later?

A 7-year-old boy sustains an extension-type supracondylar humerus fracture. Neurologic examination reveals an inability to actively flex the interphalangeal joint of his thumb and the distal interphalangeal joint of his index finger. Which nerve is most likely injured?

A 5-year-old boy presents with a lateral condyle fracture of the distal humerus displaced by 4 mm. If this fracture is managed nonoperatively in a cast, what is the most likely long-term complication?

A 10-year-old boy presents with an elbow dislocation and an associated displaced fracture of the medial epicondyle of the humerus. Which nerve is most commonly injured in association with this specific injury pattern?

A 5-year-old girl sustains a displaced lateral condyle fracture of the distal humerus. If left untreated and progressing to nonunion, which of the following is the most likely long-term complication?

When performing the standard volar Henry approach for fixation of a distal radius fracture, which structure is at greatest risk of iatrogenic injury if the dissection inappropriately strays ulnar to the flexor carpi radialis (FCR) tendon sheath?

A patient presents with the inability to form an "OK" sign, demonstrating a loss of flexion at the thumb interphalangeal joint and index finger distal interphalangeal joint. The affected nerve normally travels distally in the forearm in the interval between which two muscles?

During surgical release of the first dorsal compartment for de Quervain's tenosynovitis, care must be taken to ensure all tendon slips are decompressed. Which of the following best describes the anatomy of this compartment?

A patient presents with an inability to form the 'OK' sign, demonstrating extended interphalangeal joints of the thumb and index finger. This deficit localizes to the anterior interosseous nerve (AIN). Which of the following muscles is innervated by this nerve?

Which of the following describes the correct origin and innervation of the 3rd lumbrical muscle in the hand?

The Arcade of Frohse is a frequent site of compression for the posterior interosseous nerve (PIN). This structure represents the proximal fibrous edge of which muscle?

A 45-year-old machinist complains of progressive numbness and tingling in his ring and small fingers, worse with elbow flexion. He occasionally drops small tools due to hand weakness. Physical examination reveals tenderness over the cubital tunnel, a positive Tinel's sign, and atrophy of the first dorsal interosseous muscle. There is no Wartenberg's sign. Electromyography and nerve conduction studies confirm severe ulnar neuropathy at the elbow. What is the MOST appropriate next step in management?

A rock climber presents with pain and swelling in the palm and volar aspect of his ring finger. He reports hearing a "pop" during a difficult climb. Examination reveals tenderness along the A2 pulley, bowstringing of the flexor tendons with active flexion, and decreased grip strength. Which of the following is the MOST appropriate initial management?