Postoperative dropfoot after cementless total hip arthroplasty.

From 1989 through 1993, postoperative dropfoot occurred in seven patients after noncemented total hip replacement. After analysis of the records and a review of the literature the authors assume that cementless components may be a contributory factor to sciatic nerve palsy in total hip replacement, especially in combination with Low Molecular Weight Heparin.

The influence of radiation therapy on the Harris hip score in cementless total hip arthroplasty.

Heterotopic ossification may adversely influence the outcome of total hip arthroplasty, causing discomfort or limiting the range of motion and function of the hip. In this prospective study we examined the influence of prophylactic radiation therapy on the postoperative Harris Hip Score in cementless total hip arthroplasty, with a follow-up from 2 to 5 years. Radiation therapy lowered the incidence of unsatisfactory results and increased the Harris Hip Score in hips with a poor preoperative range of motion.

Radiation therapy to prevent heterotopic ossification in cementless total hip arthroplasty.

Heterotopic ossification is the most frequent complication in total hip arthroplasty. In this prospective trial the influence of radiation therapy on heterotopic ossification in cementless total hip arthroplasty was investigated. Radiation therapy reduces the incidence and the degree of heterotopic ossification, especially in hips with a poor preoperative range of motion.

Radiological aspects in preoperative planning and postoperative assessment of cementless total hip arthroplasty.

Some radiographic aspects in the preoperative measurement of prosthetic component size in cementless total hip arthroplasty were evaluated, primarily the magnification factor of the x rays. The influence of femoral rotation on the assessment of the pre- and postoperative AP x rays was investigated.

Osteosynthesis of pathologic fractures and prophylactic internal fixation of metastases in long bones.

Osteosynthesis was performed in 36 pathologic fractures, and in 21 metastases prophylactic internal fixation was carried out. The principles of the operative technique consist of a rigid osteosynthesis with removal of metastatic tissue and filling up of the bone defect with allograft or methylmethacrylate. The indications and benefits of prophylactic internal fixation are discussed.