**1. Introduction**

564 Recent Advances in Arthroplasty

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> Since the earliest metacarpophalangeal (MCP) arthroplasties in the 1950s, numerous resurfacing and excisional arthroplasties, and a greater choice of surgical tools and techniques to implant the prostheses have become available. Of the excisional arthroplasties, one-piece and two-piece hinge designs, constrained by screws or unconstrained, cemented and non-cemented, have been designed (1) Surgeons now perform these procedures as day surgery, and leave as much original bone as possible in the likelihood of replacing the prosthesis as the patient ages.

> At the time of surgery, synovectomy and soft-tissue balancing procedures are often performed to increase lateral joint stability or enhance the biomechanical advantage of the tendons around the operated joint. These procedures may necessitate post-operative immobilisation, specific joint positioning and strict motion protocols to achieve the best soft tissue range of motion and stability around the prosthesis (2-6).

> The efficacy of postoperative therapy regimens also requires research, as they affect patient outcome, and are time-consuming and expensive. The aim of this review is to determine which postoperative regimen are most effective in achieving freedom from pain and function, and if any particular regimen is best suited to a specific prosthesis or soft-tissue balancing procedure at the time of surgery.
