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Review Question - QID 2943

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QID 2943 (Type "2943" in App Search)
A 57-year-old man taking metformin for diabetes and gabapentin for peripheral neuropathy has a superficial plantar midfoot ulcer with a clean, noninfected appearance. Total contact casting is implemented for mechanical relief. Which of the following radiographs most likely corresponds to the clinical situation described?
  • A
  • B
  • C
  • D
  • E

Figure A

0%

13/2699

Figure B

1%

37/2699

Figure C

73%

1957/2699

Figure D

8%

218/2699

Figure E

17%

460/2699

  • A
  • B
  • C
  • D
  • E

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This diabetic patient with a plantar midfoot ulcer most likely has Charcot arthropathy of the foot. This is shown radiographically in Figure C as evident by the midfoot destruction and joint subluxation. Charcot arthropathy occures in 7.5% of neuropathic diabetics.

Wukich et al described an 83% rate of ulcer healing with total contact casting in neuropathic ulcers and noted a 17% rate of complications (most being due to skin irritation from the cast).

Figure A shows a homolateral Lisfranc injury and Figure B shows a hallux valgus deformity. Figure D shows a radiograph of a cavus foot often associated with Charcot Marie Tooth disease. Figure E shows a radiograph of an acquired flatfoot deformity with midfoot subluxation but there is absent fragmentation, osteopenia, or bony destruction indicating Charcot arthropathy of the foot.

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