Novel Use of RegJointTM in the Management Talocalcaneal Coalition Interpositional Arthroplasty.

RegJoint™ is a bioresorbable porous polylactide scaffold that has previously been used as an interposition device in small joint arthritis of the hand and great toe. The preformed design of RegJoint™ offers the technical advantages over autologous grafts by maintaining a consistent joint space volume during healing. This case represents the first documented use of a RegJoint™ implant as an interposition arthroplasty in the treatment of symptomatic talocalcaneal coalition. There were no complications, and the patient was able to return to pain-free light exercise after three months, with a return to full contact sports after six months. The device offers potential advantages, such as precise sizing and a reduction in donor-site morbidity. The mid-term outcome in our patient suggests that this technique might provide, at the very least, comparable pain relief and functional recovery to established methods.