Flexible implant arthroplasty of the proximal interphalangeal joint of the fingers.

The use of an intramedullary stemmed flexible (silicone) hinge in reconstruction of the proximal interphalangeal joint has allowed us to obtain more predictable, durable, and reproducible results. The indications, surgical technique, and postoperative rehabilitation of this technique vary with each type of deformity presented and must be carefully followed. Adequate reconstruction of the extensor mechanism and the collateral ligament system, and appropriate postoperative rehabilitation are essential to obtain good balance of the digit, with functional mobility and stability of the reconstructed proximal interphalangeal joint.