Paul D Warren

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The purpose of this study was to evaluate the incidence of lateral trochanteric pain (LTP) following primary total hip arthroplasty (THA) and identify risk factors. From 1993 to 1998, 543 primary THAs were performed for osteoarthritis. Lateral trochanteric pain was identified in 24 (4.4%) of 543 patients. The incidence of LTP with the posterior approach was(More)
The long-term outcome of total knee arthroplasty and femoral or tibial osteotomy is related to the ability of the surgeon to achieve the desired alignment based on preoperative planning. This study evaluates the effect of axial rotation on measured tibiofemoral angles and the angle formed between the anatomic and mechanical axes of the femur in lower(More)
We have attempted to reduce the developmental heterogeneity amongst populations of mouse blastocysts by synchronizing embryos to the first visible signs of blastocoel formation. Using embryos timed in this way, we have examined the extent of variation of inside and outside cell number and of inside cell size, nuclear DNA content and developmental potential,(More)
A syndrome in very low birth weight premature infants weighing less than 1500 g is evidenced by developmental nutritional rickets and fractures at 75 days of age. In a review conducted over 42 months, 247 very low birth weight cases were identified. Rickets was diagnosed in 96 (39%) infants whose mean age was 50 days and fractures were diagnosed in 26(More)
Mouse blastocysts, aged 0, 2, 6 and 12 h from the onset of cavitation, were examined by transmission (TEM) and scanning (SEM) electron microscopy. In TEM sections, trophectoderm cells (TE) differed morphologically from those of the inner cell mass (ICM) by their flattened shape, paler cytosol staining and polarized disposition of both junctional complexes(More)
Patients with Duchenne's muscular dystrophy often develop progressive scoliosis. Should spinal stabilization be necessary, these patients are considered at high risk for surgically related complications. This retrospective study of 30 patients with Duchenne's examined the prevalence and types of complications associated with posterior spinal fusion and(More)
BACKGROUND Release of the lateral patellar retinaculum can be used to treat patellofemoral instability and to balance the extensor mechanism during knee replacement operations. However, conventional lateral release disrupts the integrity of the lateral knee capsule, may damage the blood supply to the patella, and is associated with several other potential(More)
Poly(ester-urethane-urea) (PEUU) is one of many synthetic biodegradable elastomers under scrutiny for biomedical and soft tissue applications. The goal of this study was to investigate the effect of the experimental parameters on mechanical properties of PEUUs following exposure to different degrading environments, similar to that of the human body, using(More)
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