Pelvic incidence affects postoperative dislocation rate in total hip arthropalsty patients with spinal fusion.

Purpose: The purpose of this study was to compare the clinical outcome of total hip arthroplasty (THA) with and without spinal fusion (SF), and to evaluate the radiographic characteristics of patients with dislocation after THA.

Methods: A case-controlled study of 53 patients (67 hips) who underwent both THA and SF was performed. The control group was matched to the SF group by age, gender and body mass index, and 106 patients (134 hips) were selected.

Surgical education of eccentric rotational acetabular osteotomy for hip trainees.

Background: Periacetabular osteotomy is an excellent intervention for patients at early-stage osteoarthritis, but surgical education for this technique is more difficult than that for total hip arthroplasty.

Subjects And Methods: 47 joints were included from patients who underwent eccentric rotational acetabular osteotomy (ERAO) performed by 6 trainees under the instructing physician's guidance. We evaluated operative time, blood loss, radiographic parameters, clinical scores, perioperative complications, and 10-year survival rates.

Eccentric rotational acetabular osteotomy for acetabular dysplasia and osteoarthritis: follow-up at a mean duration of twenty years.

Background: The aim of the eccentric rotational acetabular osteotomy is to correct the deficient acetabular coverage in the dysplastic hip in order to limit the development of secondary osteoarthritis. The purpose of this study was to investigate the results in patients managed with an eccentric rotational acetabular osteotomy after a mean of twenty years.

Methods: The clinical and radiographic outcomes for the first 126 consecutive patients (132 hips) who underwent an eccentric rotational acetabular osteotomy at our institution were retrospectively evaluated.

Gender difference does not affect the outcomes of eccentric rotational acetabular osteotomy used in hip dysplasia.

Introduction: Various types of periacetabular osteotomies have been proposed to treat acetabular dysplasia for young and active patients. Acetabular dysplasia is prevalent in women and rare in men, therefore few reports exist concerning periacetabular osteotomy of male patients. The purpose of this study is to clarify the gender differences in surgical techniques, radiographic and clinical outcomes.

Association of serum carotenoids, retinol, and tocopherols with radiographic knee osteoarthritis: possible risk factors in rural Japanese inhabitants.

Background: The consumption of antioxidant nutrients may influence the development and progression of osteoarthritis (OA). To determine the association between serum antioxidants and radiographic knee osteoarthritis, we undertook a cross-sectional investigation in a community-based study in Japan.

Methods: A total of 562 subjects (224 male, 338 female) > or = 40 years of age were enrolled in the Comprehensive Health Examination Program (CHEP, Yakumo Study) from 2003 to 2005.

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.

Interleukin-1beta gene polymorphism associated with radiographic signs of osteoarthritis of the knee.

Background: Osteoarthritis is recognized as a noninflammatory, progressive condition, the principal cause of which is regressive changes associated with aging and which pursues a chronic course. Recently, the involvement of genetic factors has been widely reported. The purpose of this study was to identify polymorphisms at particular risk of osteoarthritis of the knee for community-living middle-aged and elderly people.

Childbirth and sexual activity after eccentric rotational acetabular osteotomy.

Pelvic osteotomy for symptomatic hip dysplasia usually is performed for young and adolescent females. Delivery after pelvic osteotomy is a concern for patients of childbearing age. We asked whether the clinical results differed before and after pregnancy, whether eccentric rotational acetabular osteotomy alters the bony birth canal, whether pelvic osteotomy impedes the ability to deliver vaginally, and whether sexual activity and quality of life improve if hip pain decreases after surgery.

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.

Increasing postural sway in rural-community-dwelling elderly persons with knee osteoarthritis.

Background: The purpose of this study was to clarify the influence of pain and radiographic findings of osteoarthritis (OA) of the knee on postural stability in rural-community-dwelling elderly persons.

Methods: A total of 314 participants, consisting of 98 men and 216 women, aged 55 to 83 years, were investigated. Subjects were classified into four groups according to the symptoms and radiographic findings: Normal; Pain (pain without radiographic OA); Asymptomatic OA (radiographic OA without pain); Symptomatic OA (pain with radiographic OA).

Biological reaction to alumina, zirconia, titanium and polyethylene particles implanted onto murine calvaria.

Periprosthetic osteolysis is a serious problem that limits long-term survival of total hip arthroplasty. Ceramics have been introduced as a joint surface material to reduce osteolysis due to wear particles. The aim of this study is to investigate the biological reaction of ceramic particles on murine calvarial bone, in comparison with polyethylene and titanium particles.