Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Hip 716 articles

Articles

Improving Cup Positioning Using a Mechanical Navigation Instrument

Simon D. Steppacher MD, Jens H. Kowal PhD, Stephen Barry Murphy MD

Although surgical navigation reduces the rate of malpositioned acetabular cups in total hip arthroplasty (THA), its use has not been widely adopted. As a result of our perceived need for simple and efficient methods of navigation, we developed a mechanical navigation device for acetabular cup orientation.

Retrieved Highly Crosslinked UHMWPE Acetabular Liners Have Similar Wear Damage as Conventional UHMWPE

David T. Schroder MD, Natalie H. Kelly BS, Timothy M. Wright PhD, Michael L. Parks MD

Highly crosslinked UHMWPE is associated with increased wear resistance in hip simulator and clinical studies. Laboratory and case studies, however, have described rim fracture in crosslinked acetabular liners. Controversy exists, therefore, on the relative merits of crosslinked liners over conventional liners in terms of wear performance versus resistance to fatigue cracking.

Does a Cemented Cage Improve Revision THA for Severe Acetabular Defects?

Erik Hansen MD, David Shearer MD, MPH, Michael D. Ries MD

Evidence suggests a growing incidence of revision total hip arthroplasty (THA) including a subset with large acetabular defects. Revision THA for severe acetabular bone loss is associated with a relatively high rate of mechanical failure.

Bernese Periacetabular Osteotomy in Males: Is There an Increased Risk of Femoroacetabular Impingement (FAI) After Bernese Periacetabular Osteotomy?

K. Ziebarth MD, J. Balakumar MBBS, FRACS (Orth), S. Domayer MD, Y. J. Kim MD, PhD, M. B. Millis MD

The Bernese periacetabular osteotomy (PAO) is a popular option for treating symptomatic acetabular dysplasia. We noted symptomatic impingement after PAO in several male patients.

CT Reveals a High Incidence of Osseous Abnormalities in Hips with Labral Tears

Mark M. Dolan MD, Benton E. Heyworth MD, Asheesh Bedi MD, Gavin Duke MD, Bryan T. Kelly MD

Acetabular labral tears are being diagnosed with increasing frequency and there is a growing consensus that these tears rarely occur in the absence of osseous abnormalities.

Femoral Insufficiency Fractures Associated with Prolonged Bisphosphonate Therapy

Joseph D. Isaacs MD, Louis Shidiak MD, Ian A. Harris MD, PhD, Zoltan L. Szomor MD, PhD

Emerging evidence has linked the long-term use of bisphosphonates with femoral insufficiency fractures. It has been suggested that the prolonged effect on bone remodeling leads to the accumulation of microfractures and weakening of bone.

Comparison of Femoral Morphology and Bone Mineral Density between Femoral Neck Fractures and Trochanteric Fractures

Yuki Maeda MD, Nobuhiko Sugano MD, Masanobu Saito MD, Kazuo Yonenobu MD

Many studies that analyzed bone mineral density (BMD) and skeletal factors of hip fractures were based on uncalibrated radiographs or dual-energy xray absorptiometry (DXA).

Bisphosphonate Remains Highly Localized After Elution From Porous Implants

Kimberly McKenzie MEng, J. Dennis Bobyn PhD, Jacintha Roberts MEng, Dorota Karabasz BSc, Michael Tanzer MD

Local elution of zoledronic acid from a porous implant reportedly enhances periimplant bone formation and implant fixation. However, there is no information in the literature on the extent to which eluted bisphosphonate remains localized around the implant or becomes systemically distributed.

Hospital Economics of Primary THA Decreasing Reimbursement and Increasing Cost, 1990 to 2008

Adam J. Rana MD, Richard Iorio MD, William L. Healy MD

The introduction of new technology has increased the hospital cost of THA. Considering the impending epidemic of hip osteoarthritis in the United States, the projections of THA prevalence, and national cost-containment initiatives, we are concerned about the decreasing economic feasibility of hospitals providing THA.