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Symptomatic carpal collapse after trapeziectomy and partial trapeziodectomy: report of two cases.

Journal of Hand Surgery - American, 2005

We present 2 cases of symptomatic nondissociative dorsal intercalated segment instability (CIND-DISI) collapse after trapeziectomy and partial trapezoidectomy for pantrapezial arthritis.
Preoperative radiographs showed normal carpal alignment in 1 case and a mild DISI alignment in the other.
After surgery both developed increased CIND-DISI and carpal symptoms that differed from their original thumb-base problems.
One required carpal realignment and fusion; to date the other has responded to nonsurgical treatment.
Such problems may be recognized insufficiently by surgeons and thus may be more common than the current literature suggests.