Results of conservative treatment of volar plate sprains of the proximal interphalangeal joint with and without avulsion fracture.

The prognosis of isolated volar plate sprains of the proximal interphalangeal (PIP) joint is related to the extension deficit. Some consider an associated avulsion fracture as a sign of severity. The goal of this study was to find out whether the outcomes of conservative treatment in PIP volar plate injury was impacted by the presence of an avulsion fracture. Our series included 75 patients, 27 years old on average, of which 58 were men. All sprains were stable. The X-rays were normal in 52 cases (group 1); an avulsion fracture was found in 23 cases (group 2). The patients were treated by buddy taping during the day and a straight finger splint at night for 3 weeks. At the last follow-up, no significant difference was found between the two groups regarding pain, extension/flexion range of motion or edema. The results of this study show that the prognosis of conservative treatment of PIP volar plate injuries does not depend on the presence of an avulsion fracture.