James R. Ross

Learn More
BACKGROUND Treatment of hip dysplasia has focused on corrective osteotomy surgery, while hip arthroscopy remains controversial. Improved understanding of intra-articular disease patterns associated with hip dysplasia will help delineate the role of arthroscopy as an adjunct to osteotomy surgery for dysplastic hips. PURPOSE The authors set out to describe(More)
Adipose lipolysis is mediated, in part, via interaction of fatty acid-binding protein (FABP) with hormone-sensitive lipase (HSL). Mice with reduced FABP content in fat (adipocyte FABP null) exhibit diminished fat cell lipolysis, whereas transgenic mice with increased FABP content in fat (epithelial FABP transgenic) exhibit enhanced lipolysis. To examine the(More)
BACKGROUND Cam-type femoroacetabular impingement (FAI) is generally described as being more common in males, with pincer-type FAI being more common in females. The purpose of this study was to determine the effect of sex on FAI subtype, clinical presentation, radiographic findings, and intraoperative findings in patients with symptomatic FAI. METHODS We(More)
Tarsal coalitions between the navicular and the cuneiforms occur infrequently when compared with the more common talocalcaneal and calcaneonavicular coalitions. Isolated cases of navicular-medial cuneiform coalitions have only rarely been reported; however, the diagnosis is likely underrecognized. Conservative management should be pursued initially for(More)
BACKGROUND The current understanding of the effect of dynamic changes in pelvic tilt on the functional acetabular orientation and occurrence of femoroacetabular impingement (FAI) is limited. PURPOSE To determine the effect of changes in pelvic tilt on (1) terminal hip range of motion and (2) measurements of acetabular version as assessed on 2- and(More)
BACKGROUND Previous studies have reported residual deformity to be the most common reason for revision hip arthroscopy. An awareness of the most frequent locations of the residual deformities may be critical to minimize these failures. QUESTIONS/PURPOSES The purposes of this study were to (1) define the three-dimensional (3-D) morphology of hips with(More)
Hip preservation surgery is performed to address femoroacetabular impingement, alleviate any associated pain, and reduce the risk of early onset of osteoarthritis. In the last decade, arthroscopy has become more popular in addressing femoroacetabular impingement, due to its minimally invasive approach. However, poor visualization and limited spatial(More)
BACKGROUND Coxa profunda is commonly viewed as a radiographic parameter that is indicative of pincer-type femoroacetabular impingement, and this finding can impact diagnostic and surgical decision-making. Validation of coxa profunda as a measure of pincer-type femoroacetabular impingement has not been rigorously analyzed. Our hypothesis was that coxa(More)
The purpose of this study was to define the clinical and disease characteristics in patients who fail hip arthroscopy and require periacetabular osteotomy. Thirty patients (30 hips) who underwent a PAO, following a failed hip arthroscopy were identified from a multicenter database. Eighty-seven percent were female and the average age was 27.3 years. The(More)
BACKGROUND Detailed recognition of the three-dimensional (3-D) deformity in acetabular dysplasia is important to help guide correction at the time of reorientation during periacetabular osteotomy (PAO). Common plain radiographic parameters of acetabular dysplasia are limited in their ability to characterize acetabular deficiency precisely. The 3-D(More)