Arthrodesis of the distal interphalangeal joint using a bioabsorbable rod as an intramedullary nail.

There are several fixation techniques for arthrodesis of the distal interphalangeal joint. Since February 1999 we have used a bioabsorbable (poly-L-lactide, PLLA) rod as an intramedullary nail for arthrodesis of 15 distal interphalangeal joints and one interphalangeal joint of the thumb. The advantages include the absence of protruding hardware that would require removal, and technical simplicity. Preoperative diagnoses included degenerative arthritis in five patients, post-traumatic arthritis in 10 patients, and non-union after arthrodesis with crossed Kirschner wires in one patient. All patients were observed until there was clinical and radiographic evidence of fusion with the mean interval to fusion of 8 weeks (range 6-12). There were two cases of minor intermittent local swelling, which resolved. Fixation with a PLLA rod for arthrodesis of the distal interphalangeal joint is a simple and effective technique.