Pain control after total knee arthroplasty: a prospective study comparing local infiltration anesthesia and epidural anesthesia.

Postoperative pain control after total knee arthroplasty (TKA) is a well-known clinical problem. Efforts to treat it with the use of local anesthesia have been made, but the results have been contradictive. In the late 1990s, an infiltrated solution of ropivacaine/ketorolac/adrenaline was shown to be effective for this purpose, and this technique has since spread over the world.

Implant migration and failure in total knee arthroplasty is related to body mass index and tibial component size.

Aseptic loosening of knee implants is multifactorial. The purpose of this study was to examine the role of body mass index and tibial component size on loosening and migration of total knee arthroplasty (TKA) implants. Six thousand five hundred forty-eight primary TKAs (anatomic graduated components) were studied with aseptic loosening as the end point.