Total hip arthroplasty using a cylindrical cementless stem in patients with a small physique.

We performed total hip arthroplasty using an anatomic medullary locking cementless stem for small-physique patients from 1988 to 1995. We conducted a retrospective study of 50 joints in 44 cases, including 40 developmentally dysplastic hips followed for 12 to 20 years (average, 15.1 years).

In vitro elution of vancomycin from calcium phosphate cement.

Antibiotic-impregnated bone cement beads have become popular for the treatment of osteomyelitis and/or prosthesis infection. However, bone cement has the disadvantage of heating up during polymerization of cement. Recently, calcium phosphate cement (CPC) has been used as a bone replacement and augmentation, and it does not heat up during polymerization.

Combined rotational osteotomy and vascularized iliac bone graft for advanced osteonecrosis of the femoral head.

This paper describes the rationale and technique for a combined procedure of transtrochanteric rotational osteotomy and vascularized iliac bone grafting in cases of osteonecrosis of the femoral head with an extensive and widely collapsed necrotic lesion in young patients. The authors performed this combined operation for 12 joints in 12 patients over 14 years from 1984 until 1997. At a mean of 81 months after the operation, in eight patients who had no pain, the average Harris hip score was 90.

Correlation between severity of rheumatoid arthritis and manner and extent of cervical lesion.

Abstract To determine the proper management of treatment for rheumatoid cervical lesions, we investigated the clinical course of the cervical spine in rheumatoid arthritis (RA). The severity of RA was classified into three groups according to the disease subsets advocated by Ochi et al.: the less erosive subset (LES), the more erosive subset (MES), and mutilating disease (MUD).