The ankle is a highly congruent joint with a surface area of 11-13 cm(2). Total ankle replacements have been attempted since the early 1970s and design has continually evolved as the early designs were a failure. This was because the stresses involved and the mutiaxial motion of the ankle has not been understood until recently. It has been shown that the talus slides as well as rolls during the...

The use of a total joint replacement surgery has been growing in a manner which is poorly understood. This growth is more likely to be limited by saturation of the available medical services than by a limit to the number of people who could benefit from the treatment. Present indications are that services will be saturated in 1974 or 1975, after which 4600 extra people a year will go on to the ...

OBJECTIVES To introduce the practice of a nurse-led orthopaedic clinic for managing stable patients after total hip or knee replacement and to evaluate its efficacy. DESIGN Case series. SETTING A public hospital in Hong Kong. PATIENTS Patients who had stable primary total knee replacement or total hip replacement done for longer than 2 years were managed in a nurse-led total joint replace...

Knee and hip joint replacement implants involve a sliding contact between the femoral component and the tibial or acetabular component immersed in body fluids, thus making the metallic parts susceptible to tribocorrosion. Micro-motions occur at points of fixation leading to debris and ion release by fretting corrosion. β-Titanium alloys are potential biomaterials for joint prostheses due to the...

The Kaiser Permanente National Total Joint Replacement Registry (TJRR) is a national level database designed as a postmarket surveillance system for elective total hip and knee replacement. As of March 31, 2007, the TJRR recorded 16,945 primary total hip arthroplasties (THA), 2144 revisions (11.2%); and 30,815 total knee arthroplasties (TKA), 1794 revisions (5.5%). Statistically significant fin...

The development of hip joint materials is one of the most challenging problems to prostheses technology in this millennium. Several types of materials have been developed for this purpose. The materials like glass, polymer (poly-tetra-fluoro-ethylene / PTFE or Teflon and ultra-high-molecular-weight-polyethylene or UHMWPE), metal (stainless steel, CoCr alloy, and CoCrMo alloy), ceramics (alumina...

Renal injury and dysfunction are serious complications after major surgery, which may lead to increased morbidity and mortality. The objective of our study was to identify the possible risk factors for renal dysfunction after total knee joint replacement. A retrospective study was conducted among 702 consecutive primary knee joint replacements performed between January 2009 and December 2012 in...

Case report. A 68-year-old man presented in October 1988 with a four-year history of increasing pain in the right knee. The clinical and radiological signs were consistent with osteoarthritis and the symptoms did not respond to conservative measures. In January 1989 a cemented press-fit condylar (PFC) total knee replacement (Johnson & Johnson, Brunswick, New Jersey) was performed. The patient p...

Background. Patients undergoing joint replacement remain at increased risk for venous thromboembolism (VTE) compared to other types of surgery, regardless of thromboprophylactic regimen. The pathophysiologic processes rendering this group of patients at risk for VTE are multifactorial. Procedure-specific and patient-specific exposures play a role in the postoperative development of VTE, includi...