Try it
Orthopaedics · Joint disorders
Sample itemA 60-year-old man with long-standing diabetic neuropathy has a swollen, warm, but painless midfoot with joint destruction, fragmentation and subluxation on radiographs. What is the diagnosis?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Charcot neuro-arthropathy
Charcot joint is a progressive destructive arthropathy of a joint that has lost protective sensation and proprioception, seen in diabetes, tabes dorsalis and syringomyelia. Repeated unrecognised trauma leads to disorganisation, debris and deformity, and treatment is offloading with total contact casting.
Option by option
A. Septic arthritis
Septic arthritis is intensely painful, with fever and a high white cell count.
B. Osteoarthritis
Osteoarthritis causes pain with osteophytes and does not destroy and disorganise the joint in this way.
C. Gouty arthritis
Gout is acutely painful with crystals and episodic attacks.
D. Charcot neuro-arthropathy (correct)
Correct. A painless, destroyed, swollen joint in a neuropathic limb is classic.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
More Orthopaedics questions
- Upper limb fracturesWhich complication is characteristic of a fracture through the waist of the scaphoid?
- Fractures in childrenA child with a displaced supracondylar fracture of the humerus develops a painful, pale…
- Bone tumoursA teenager has knee pain and a radiograph around the distal femur showing a sunburst per…
- HipA positive Trendelenburg sign is due to weakness of the gluteus medius and minimus. Whic…