Rotating platform revision total knee arthroplasty.

Although revision total knee arthroplasty (TKA) procedures are successful in relieving pain and restoring function in failed knees, long-term results are inferior to primary procedures. Mobile bearing (MB) revision knees can potentially improve functional performance. Clinical results of 44 MB rotating platform (RP) revision TKAs demonstrated mean knee injury and osteoarthritis outcome score (KOOS) activity of daily living score of 77 2 years postoperatively.

Mid-term survivorship results for a rotating-platform knee prosthesis.

Interest in mobile-bearing knee prostheses is increasing in the US market. We studied results at 2 to 5 years with a mobile-bearing system that includes a cobalt-chrome tibial tray and femoral component with a polyethylene cruciate-retaining tibial component insert that allows rotation around a central axis and can be used with cruciate-retaining or posterior-stabilized femoral components. The inserts used in this study were cruciate retaining and did not include the posterior-stabilized design.

Comparison of patient satisfaction with incision cosmesis after standard and minimally invasive total hip arthroplasty.

This study evaluated patient assessments and attitudes regarding incision cosmesis following standard and minimally invasive total hip arthroplasty 1 to 3 years postoperatively. A cosmesis questionnaire designed to elicit a score evaluating scar satisfaction was mailed to patients. Although the difference in total cosmesis score between the standard and minimally invasive groups was not statistically significant, patients with a standard incision had better scores at <1 year.

Optimizing range of motion in cruciate-retaining mobile-bearing tka: experience with 2000 cases.

We describe experience with 2000 cruciate-retaining Sigma RP total knee arthroplasties performed between September 2000 to January 2006. All procedures were performed with a midvastus arthrotomy, medioposterior release, and posterior condylar clean-out technique. This implant design uses a congruent polyethylene bearing to diminish contact stress while allowing rotation between the polyethylene bearing surface and tibial tray.

Implant sizing of the P.F.C. sigma rotating-platform total knee system.

We studied the P.F.C.

Training the scrub person on S-ROM technique total hip arthroplasty.

The role of the scrub person requires the following abilities: assessing situations immediately, carrying out correct actions, using critical thinking and good judgment, and communicating effectively with all members of the surgical team. The scrub person greatly contributes to the success of total joint replacement surgery. He or she must understand the instrumentation, sizes, trials that are required, and proposed procedural steps to prepare the femur and acetabulum for implantation.

Modular femoral component for conversion of previous hip surgery in total hip arthroplasty.

The conversion of previous hip surgery to total hip arthroplasty creates a durable construct that is anatomically accurate. Most femoral components with either cemented or cementless design have a fixed tapered proximal shape. The proximal femoral anatomy is changed due to previous hip surgery for fixation of an intertrochanteric hip fracture, proximal femoral osteotomy, or a fibular allograft for avascular necrosis.

Leg length inequality in total hip arthroplasty.

Postoperative leg length inequality after total hip arthroplasty frequently leads to medical liability issues because no standard exists regarding the acceptable disparity. Modular stems allow control of offset, independent sizing of the distal femoral anatomy, as well as proximal medullary sizing. The authors compared the restoration of leg length in two cohort protocols.

Posterior-lateral approach to minimal incision total hip arthroplasty.

As surgeons learn to perform minimally invasive hip arthroplasty procedures, the various techniques will evolve and one or two approaches may eventually become the standard. Currently, most of these procedures are reserved for the nonmorbidly obese patients; however, as techniques are perfected and surgeons gain experience, this patient population may eventually be served. Surgeons must present information to patients in a responsible manner and clarify the actual versus perceived advantages of the MITH.

Primary total hip arthroplasty.

TOTAL HIP ARTHROPLASTY (THA) has been proven to decrease a patient's pain and improve function and quality of life. This procedure has been performed in the United States since 1960. Follow-up data suggest long-term success with a decreasing rate of complications and low rate of revision.