Charcot arthropathy of the knee accompanied by tethered cord syndrome and lumbosacral fur sinus.

Charcot arthropathy is a rare disease in clinic, which is easy to be misdiagnosed and delayed diagnosis. Imaging examination plays a key role in the diagnosis of Charcot arthropathy. It is important to improve the early diagnosis rate and strive for early treatment to improve the quality of life of these patients. Here we reported a rare case of charcot knee (CK) accompanied by tethered cord syndrome and lumbosacral fur sinus, who presented with joint destruction, joint deformity and multiple free bodies and received joint free bodies removal and joint replacement surgery with acceptable short and midterm follow-up results.