Surgical approaches in mini-incision total knee arthroplasty.

Mini-incision total knee arthroplasty can be accomplished through versions of exposures used in standard total knee arthroplasty. Modifications of the medial parapatellar, subvastus, and midvastus approaches are presented, and potential advantages and disadvantages of each approach are reviewed. When making the transition to smaller incisions and arthrotomies, the medial parapatellar seems to be the most versatile. The ability to do a total knee arthroplasty through a mini incision, and ultimately the success of the procedure, will depend on appropriate patient selection.