Chromium ion release from stainless steel pediatric scoliosis instrumentation.

Study Design: Case-control study.

Objective: To determine whether serum metal ion levels and erythrocyte chromium levels in adolescents with stainless steel spinal instrumentation are elevated when compared with 2 control groups.

Summary Of Background Data: Instrumented spinal arthrodesis is a common procedure to correct scoliosis.

Pinealectomy in the chicken: a good model of scoliosis?

The phenomenon of spinal deformity in the pinealectomized chicken has led researchers to postulate a disturbance of melatonin activity as a potential cause of adolescent idiopathic scoliosis (AIS). More recently, structural differences between curves seen in this model and those seen in scoliosis have been highlighted suggesting the deformities observed are not as similar as first thought. We examined melatonin levels, and the radiological and histological characteristics of scoliosis after pinealectomy in chickens.

Iliotibial band Z-lengthening for refractory trochanteric bursitis (greater trochanteric pain syndrome).

Background: Trochanteric bursitis or greater trochanter pain syndrome (GTPS) is a frequent cause of lateral hip pain. This article reports our experience with a new method of Z-lengthening of the iliotibial band for refractory GTPS.

Methods: Fifteen patients (17 hips) were diagnosed with GTPS unresponsive to conservative treatment including steroid injection.

Rapid osteolysis after revision hip arthroplasty in Paget's disease.

Rapid bone turnover in Paget's disease has been of concern to many surgeons performing hip arthroplasties. We present the case of a 71-year-old man with Paget's disease affecting the proximal femur. He had undergone total hip arthroplasty 14 years before.