Bio-integrative, fiber-reinforced fixation device in carpometacarpal (CMC) joint fusions following carpal boss removal: A case series

Abstract

Purpose: The purpose of this case series is to provide insight into the surgical treatment of carpometacarpal (CMC) instability after carpal boss removal with the OSSIOfiber® trimmable fixation nail, a bio-integrative fixation device. Methods: This review includes five patients who underwent CMC joint fusions post removal of symptomatic carpal boss presenting for surgical management from one board certified hand surgeon. Patient information, clinical images, and outcome scores are collected through retrospective chart review. Results: There is evidence of CMC joint fusion at three months for all five subjects based on radiographic evidence. All subjects were pain free at 6 weeks post operation. Range of wrist motion was within normal limits for all subjects prior to surgery and again at 3 months for 4/5 subjects. No tissue reaction to the OSSIOfiber® trimmable bone nail was noted in the five subjects. Conclusion: The outcome of the joints treated includes rate of CMC joint fusion at 3 months with no significant adverse events to the trimmable bone nail. Using a fiber-reinforced bio-integrative implant that integrates naturally within the bone may be a desired choice over using a metallic fixation device for many orthopedic hand surgeons.