Effects of a less-invasive surgical technique on cement mantle quality in total knee arthroplasty.

The purpose of this study was to assess the effects of a less-invasive midvastus exposure during total knee arthroplasty (TKA) on cement mantle grade compared with a standard parapatellar arthrotomy and standard TKA. Fifty consecutive cemented minimally invasive TKAs using a midvastus approach, patellar subluxation without eversion, and less-invasive instrumentation were compared radiographically with a control cohort of 50 consecutive cemented standard TKAs. To eliminate patient selection bias, the standard cohort included consecutive surgeries completed before 2004, prior to the advent of minimally invasive techniques in TKA.

Acute posttraumatic catastrophic failure of a second-generation, highly cross-linked ultra-high-molecular-weight polyethylene patellar component.

A 74-year-old man underwent total knee arthroplasty in 1996 and subsequent revision total knee arthroplasty for aseptic loosening in 2005. During revision, an all-polyethylene, 7-mm, second-generation, highly cross-linked ultra-high-molecular-weight polyethylene patellar component (Durasul; Zimmer, Warsaw, Indiana) was used. The patient recovered well, but he presented with severe acute pain after a popping feeling was detected during a game of golf in postoperative year 4.

Cold saline lavage for removal of incarcerated porous ingrowth stems.

A patient with a history of total knee arthroplasty and 5 subsequent revisions presented with pain. His preoperative construct consisted of a revision implant with porous in-growth stem extensions. He was indicated for revision surgery for a painful implant with progressive arthrofibrosis.

Priapism as a complication after total hip arthroplasty: a case report and review of the literature.

Priapism is defined as a prolonged engorgement or erection of the penis or clitoris that is unrelated to sexual arousal. Recent studies have determined the incidence of priapism to be between 1.5 and 2.

Evaluation of a new power-operated PMMA vacuum mixing and delivery system for cemented femoral stem insertion.

Variations exist in the manual preparationand delivery of cement during primary total hip arthroplasty. The incorporation of a power source may standardize cement mantle manufacturing. This study prospectively compared the use of a new power-operated polymethylmethacrylate vacuum mixing and delivery system to a commonly used manually powered industry standard.

The science of bone cement: a historical review.

The use of PMMA bone cement has been a key factor in the advent of joint replacement as a surgical option. Despite revolutionary changes in joint replacement technology for the treatment of hip and knee arthritis, the use of PMMA bone cement in its intraoperative application has not significantly changed since Harris' description of third generation cement technique. Future answers to questions regarding cemented implant longevity may lie in the further improvement of existing PMMA technology and standardization of the manufacturing of PMMA bone cement intraoperatively.