Deborah J Hall

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Calcium phosphates (CaPO4) and faster-resorbing calcium sulfate (CaSO4) are successfully employed as synthetic bone grafts for treatment of contained defects. We used a canine critical-sized bone defect model to study an injectable CaSO4/CaPO4 composite graft that incorporated a matrix of CaSO4 and dicalcium phosphate dihydrate into which beta-tricalcium(More)
Eighty patients who had unilateral coxa plana and who had been treated conservatively were followed to a mean age of sixteen and one-quarter years, and their cases were reviewed for radiographic evidence of a disturbance of the femoral capital growth plate. This physeal involvement was inferred by the presence of one or more of five findings: premature(More)
The addition of a plasticizer to synthetic bone graft substitutes can improve handling characteristics, injectability, and the ability to uniformly fill defects. Restoration of large medullary bone defects using an injectable calcium sulfate-based putty using hydroxypropylmethylcellose as the plasticizer was compared to conventional calcium sulfate paste in(More)
UNLABELLED Dental implants made of titanium alloys have been used as a predictable therapy approach to replace missing teeth. The oral environment subjects titanium implants to varying conditions like changes in pH, temperature, and saliva contamination leading to chemical corrosion together with mastication process. OBJECTIVE In this study, the combined(More)
BACKGROUND CONTEXT Vertebroplasty was developed to mechanically reinforce weakened vertebral bodies. Polymethylmethacrylate (PMMA) bone cement has been most commonly used but carries risks of thermal injury and respiratory and cardiovascular complications. Calcium phosphate (CaP) offers the potential for biological resorption and replacement with new bone,(More)
The frequent association of short stature and retardation of skeletal maturation in Perthes' disease has prompted an investigation of growth-related hormones in this condition. A group of 18 prepubertal boys, aged five to 11 years, who either had a bone age two years or more less than their chronologic age or whose heights were less than the third centile,(More)
Contradictory theories of the mode of inheritance of Perthes' disease have been largely due to sampling error, which is revealed by comparison of four series. Confusion also has been caused by the unequal sex incidence of the disease. Family data from a series of 87 boys and 58 girls with Perthes' disease were combined with those of Gray et al. (223 boys(More)
This paper reports a longitudinal study of carpal bone development in 125 children (98 boys, 27 girls) attending a clinic for Perthes' disease. The age at appearance of ossification in each carpal bone was estimated by studying consecutive radiographs obtained at six-months intervals. The results were compared with the findings for normal children published(More)
Hip arthroplasty femoral stems coated with Ti6Al4V beads were treated by anodic oxidation in H3 PO4 for enhanced bioactivity and were studied in a 6-month canine model to determine the effects of the treated surface on the ingrowth of bone and soft tissues. The area fractions of bone, marrow, and fibrous tissue in the porous coating of seven treated and(More)
BACKGROUND There are increasing reports of total hip arthroplasty failure subsequent to modular taper junction corrosion. The surfaces of tapers are machined to have circumferential machining marks, resulting in a surface topography of alternating peaks and valleys on the scale of micrometers. It is unclear if the geometry of this machined surface(More)