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Technique guide are not considered high yield topics for orthopaedic standardized exams including the ABOS, EBOT and RC.
A 35-year-old jack-hammer operator presents with progressive hand weakness over the last year. He has been reluctant to see a physician. He notes some loss of coordination but otherwise denies any numbness. When asked to pinch a piece of paper, his thumb IPJ and index finger DIPJ flex. Electrodiagnostic studies demonstrate positive sharp waves in the adductor pollicis. An MRI is obtained and is seen in Figure A. What is the physical relationship of the affected neurovascular bundle?
The superficial branch of the radial nerve is dorsal and radial to the radial artery
The median nerve is ulnar to the radial artery
The ulnar nerve is dorsal and radial to the ulnar artery
The ulnar nerve is volar and radial to the ulnar artery
The ulnar nerve is ulnar and dorsal to the ulnar artery
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A 54-year-old male presents with a slowly enlarging mass on the dorsum of his left wrist which has been present for 3 years. He denies any significant symptoms. Physical exams shows a 1 cm palpable mass. A MRI is shown in Figure A. A biopsy of this lesion would most likely show?
Synovial cells with mucin accumulation
Proliferating histiocytes of moderate cellularity and frequent multinucleated giant cells
Spindle cells arranged in intersecting bundles
Lipocytes, spindle cells, and scattered atypical giant cells
A 10-year-old boy presents with a painless mass on the dorsal aspect of his wrist that has been present for 3 weeks. A clinical image is shown in Figure A. T1 and T2 magnetic resonance images are shown in Figure B and C, respectively. On your exam, the mass transilluminates and Allen test reveals patent radial and ulnar arteries. What is the most appropriate next step in management?
Referral to a orthopaedic oncologist
Surgical excision with wide margins
Autologus bone marrow aspirate injection
Injection of N-Butyl-Cyanoacrylate