Learn More
Acetabular labrum tears have been implicated as a cause of hip pain in adult patients. Few studies describe the anatomy, histologic features, and microvasculature of the acetabular labrum and labral tears. Fifty-five embalmed and 12 fresh-frozen adult hips with a mean age of 78 years (range, 61-98 years) were studied. Of these, 96 % (53 of 55) of the hips(More)
BACKGROUND Electrical stimulation is used to treat nonunions and to augment spinal fusions. We studied the biochemical pathways that are activated in signal transduction when various types of electrical stimulation are applied to bone cells. METHODS Cultured MC3T3-E1 bone cells were exposed to capacitive coupling, inductive coupling, or combined(More)
Several anatomic axes routinely are used for determining femoral rotational alignment in total knee arthroplasty. The purpose of this study was to determine the reliability of these techniques. The transepicondylar axis, anteroposterior axis, and balanced flexion gap tension line were identified relative to the posterior condylar axis in 8 fresh frozen(More)
The purpose of our study was to describe the gross anatomy of the adult acetabular labrum and to determine its contribution to the depth, surface area, and volume of the acetabulum. Fifty-five embalmed hips were studied. Each hip was disarticulated, and standardized measurements were taken. Calculations of the acetabular articulating surface area and(More)
Bovine brain microvessel pericytes, bone cells, and fibroblasts were grown in tissue culture in 3%, 21%, or 60% oxygen for 7 weeks. Alkaline phosphatase activity was highest in bone cells and pericytes grown in 3% oxygen, with the activity higher in the former than the latter. Alkaline phosphatase activity was very low in fibroblasts at every oxygen(More)
It is well-known that electrical stimulation can prompt healing of bone fractures. However, the mechanism involved is less clear. In this study, we found that capacitively coupled electric field-induced proliferation of osteoblastic cells (MC3T3-E1) accompanied increased levels of transforming growth factor-beta 1 (TGF-beta1) mRNA determined by quantitative(More)
BACKGROUND Liquid gentamicin is approved by the Food and Drug Administration, is readily available, and is much less costly than tobramycin, the more commonly used antibiotic in cement spacers. The purpose of the present study was to test the mechanical properties, elution characteristics, and antibacterial activity of liquid gentamicin in an acrylic bone(More)
Postoperative ileus is a recognized complication of lower extremity surgery. In a review of 21,589 patients who underwent either total hip or total knee arthroplasty between 1988 and 1997, 0.32% developed postoperative ileus. The ileus lasted >3 days in 46% of patients. The purpose of this study was to investigate the risk factors associated with ileus(More)
Tissue augmentation has been used to reinforce repairs of massive chronic rotator cuff tears. This report describes a new technique for arthroscopic insertion of a biologic rotator cuff tissue augmentation. Double-loaded suture anchors are needed for the technique. One suture is used for the rotator cuff repair and 1 suture is used for the tissue(More)
Rat calvarial bone cells or mouse MC3T3-E1 bone cells subjected to a capacitively coupled electric field of 20 mV/cm consistently showed significant increases in cellular proliferation as determined by deoxyribonucleic acid content. Verapamil, a membrane calcium channel blocker; W-7, a calmodulin antagonist; indocin, a prostaglandin synthesis inhibitor; or(More)