Pubic/ischial stress fractures after eccentric rotational acetabular osteotomy.

Background: Although there have been several reports on the complications of periacetabular osteotomy, stress fractures occurring in the pubic and ischial bones are less well recognised. The purpose of this study was to analyse the incidence of stress fracture, factors and treatment outcomes of stress fractures in the pubic/ischial bone after eccentric rotational acetabular osteotomy (ERAO).

Materials And Methods: We examined 340 hips of 290 patients (male 35 hips, female 305 hips; mean age 42 years) with whom it was possible to conduct a minimum of 1 year of follow-up observations after ERAO.

Joint space wider than 2 mm is essential for an eccentric rotational acetabular osteotomy for adult hip dysplasia.

Background: Satisfactory intermediate-term results after an eccentric rotational acetabular osteotomy (ERAO) for the treatment of early osteoarthritis secondary to developmental dysplasia of the hip (DDH) have been reported. The purpose of this study was to investigate whether a minimum joint space width (JSW) in patients with advanced osteoarthritis secondary to DDH influences intermediate-term clinical and radiographic outcomes after performing an ERAO.

Methods: A total of 113 patients (116 hips) with a JSW of ≤3 mm were consecutively treated by ERAO for advanced osteoarthritis of the hip and then were followed for more than 5 years.

Similar survival of eccentric rotational acetabular osteotomy in patients younger and older than 50 years.

Unlabelled: Pelvic osteotomy for middle-aged patients with hip dysplasia remains controversial. We asked whether pelvic osteotomy would yield lower Harris hip scores and survivorship in older patients than in younger patients. We compared patients younger than 50 years (n = 123) with patients 50 years or older (n = 41).

Accurate acetabular component orientation after total hip arthroplasty using an acetabular alignment guide.

Between February 2005 and August 2006, we recorded acetabular component orientation in 90 patients (100 hips) who underwent primary total hip arthroplasty (THA), to determine whether using an alignment guide ensures accurate acetabular positioning. In the alignment-guide group (46 patients; 48 hips), a guide was placed on the pelvis, a Kirschner wire (K-wire) was attached to the guide, and orientation of the acetabular component was confirmed by both the surgeon and an assistant. In the control group (44 patients; 52 hips), a K-wire was not used and the angle was confirmed by the surgeon alone.

Quality of life following femoral osteotomy and total hip arthroplasty for nontraumatic osteonecrosis of the femoral head.

Background: Nontraumatic osteonecrosis of the femoral head (NOFH) frequently develops in active young persons. The affected femoral head collapses owing to weight-bearing, and the individual's quality of life (QOL) can be predicted to deteriorate greatly with time. We undertook to determine the efficacy of surgery and to clarify whether patient QOL differs according to differences in the surgical method employed.

Factors leading to osteoarthritis after eccentric rotational acetabular osteotomy.

Unlabelled: We performed eccentric rotational acetabular osteotomy consecutively in 273 hips in 248 patients with hip dysplasia. Twenty-one patients were male and 227 were female. The average age was 37.

Ectopic bone formation around the poly-L-lactide screw head in rotational acetabular osteotomy for hip dysplasia.

Ectopic bone formation around the poly-L-lactide (PLLA) screw head in eccentric rotational acetabular osteotomy for hip dysplasia was investigated. A total of 174 hips in 165 patients with hip dysplasia were consecutively treated with eccentric rotational acetabular osteotomy. Average age at the time of operation was 37 years.