The PCR technique cannot be recommended for the routine detection of prosthetic infection. The large number of false positive results may represent sample contamination, or bacterial presence related to low-virulence organisms, low bacterial load, or a strong host immune response.
We report the failure of a femoral component in a unicompartmental knee replacement 6 years after implantation. The implant fractured 15 mm from the anterior tip, and scanning electron microscopy confirmed fatigue to be the cause of failure. The clinical and laboratory findings are presented, and the causes and implications of this mode of implant failure are discussed.
We report the case of a wheelchair-bound rheumatoid Jehovah's Witness who underwent rapid sequence, staged, simultaneous ipsilateral hip and knee replacements. Using perioperative erythropoietin and postoperative blood salvage, all four joints were reconstructed without homologous blood transfusion. One year following surgery, the patient has achieved an independent functional status, and all four replaced joints remain painless.
The use of two wire loops for fixation of the trochanteric fragment after Chevron osteotomy in revision THA achieves stable fixation with minimal hardware.
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