Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Hip 725 articles


Standard Comorbidity Measures Do Not Predict Patient-reported Outcomes 1 Year After Total Hip Arthroplasty

Meridith E. Greene BA, Ola Rolfson MD, PhD, Max Gordon MD, PhD, Göran Garellick MD, PhD, Szilard Nemes PhD

Comorbidities influence surgical outcomes and therefore need to be included in risk adjustment when predicting patient-reported outcomes. However, there is no consensus on how best to use the available data about comorbidities in registry-based predictive models.

Twenty Percent of Patients May Remain Colonized With Methicillin-resistant Staphylococcus aureus Despite a Decolonization Protocol in Patients Undergoing Elective Total Joint Arthroplasty

Michael D. Baratz MD, Ruth Hallmark BSN, Susan M. Odum PhD, Bryan D. Springer MD

is the most commonly isolated organism in periprosthetic joint infection (PJI). Resistant strains such as methicillin-resistant(MRSA) are on the rise, and many programs have instituted decolonization protocols. There are limited data on the success ofnasal decolonization programs and their impact on PJI.

Revision of Metal-on-metal Hip Prostheses Results in Marked Reduction of Blood Cobalt and Chromium Ion Concentrations

Olli Lainiala BM, Aleksi Reito MD, Petra Elo MD, PhD, Jorma Pajamäki MD, PhD, Timo Puolakka MD, PhD, Antti Eskelinen MD, PhD

High revision rates attributable to adverse reactions to metal debris have been reported for total hip arthroplasties (THAs) with metal-on-metal implants and hip resurfacings. The effect of revision on blood metal ion levels is described only in small series, the clinical results of revisions have been contradictory, and concerns regarding component loosening have been presented.

Are There Sex-dependent Differences in Acetabular Dysplasia Characteristics?

Stephen T. Duncan MD, Ljiljana Bogunovic MD, Geneva Baca BA, Perry L. Schoenecker MD, John C. Clohisy MD

Many patients who undergo periacetabular osteotomy (PAO) for symptomatic acetabular dysplasia experience decreased pain and improved function, yet some experience inadequate clinical improvement. The etiologies of treatment failure have not been completely defined, and sex-dependent disease characteristics that may be associated with less pain relief are not understood.

What Is the Utility of Biomarkers for Assessing the Pathophysiology of Hip Osteoarthritis? A Systematic Review

Jeffrey J. Nepple MD, Kayla M. Thomason BS, Tonya W. An BS, Marcie Harris-Hayes DPT, John C. Clohisy MD

Innovations in biologics offer great promise in the treatment of patients with orthopaedic conditions and in advancing our ability to monitor underlying disease pathophysiology. Our understanding of the pathophysiology of hip osteoarthritis (OA) has improved significantly in the last decade. Femoroacetabular impingement (FAI) and hip dysplasia are increasingly recognized and treated as forms of prearthritic hip disease, yet the inability of radiographic and MR imaging to identify patients before the onset of irreversible articular cartilage injury limits their use for early diagnosis and treatment of patients with these conditions. Molecular biomarkers, as objectively measureable indicators of the pathophysiology of hip OA, have the potential to improve diagnosis, disease staging, and prognosis of hip OA and prearthritic hip disease. Although research into molecular biomarkers of hip OA has been conducted, investigations in prearthritic hip disease have only recently begun.

Does Surgical Hip Dislocation and Periacetabular Osteotomy Improve Pain in Patients With Perthes-like Deformities and Acetabular Dysplasia?

John C. Clohisy MD, Jeffrey J. Nepple MD, James R. Ross MD, Gail Pashos BS, Perry L. Schoenecker MD

Patients with symptomatic residual Perthes-like deformities may present with a combination of structural abnormalities including a large aspheric femoral head, short and wide femoral neck, high greater trochanter, and acetabular dysplasia. Sometimes, the hip is further compromised by concurrent symptomatic femoroacetabular impingement (FAI) (proximal femoral deformities) and structural instability (acetabular dysplasia).

Retrieval Analysis of Sequentially Annealed Highly Crosslinked Polyethylene Used in Total Hip Arthroplasty

Steven M. Kurtz PhD, Daniel W. MacDonald MS, Michael A. Mont MD, Javad Parvizi MD, Arthur L. Malkani MD, William Hozack MD

First-generation annealed and second-generation sequentially annealed, highly crosslinked polyethylenes (HXLPEs) have documented reduced clinical wear rates in their first decade of clinical use compared with conventional gamma inert-sterilized polyethylene. However, for both types of annealed HXLPE formulations, little is known about their reasons for revision, their in vivo oxidative stability, and their resistance to mechanical degradation.

Does Previous Pelvic Osteotomy Compromise the Results of Periacetabular Osteotomy Surgery?

Jeffrey B. Stambough MD, John C. Clohisy MD, Geneva R. Baca BA, Ira Zaltz MD, Robert Trousdale MD, Michael Millis MD, Daniel Sucato MD, MS, Young-Jo Kim MD, PhD, Ernest Sink MD, Perry L. Schoenecker MD, Rafael Sierra MD, David Podeszwa MD, Paul Beaulé MD

As the Bernese periacetabular osteotomy (PAO) has grown in popularity, specific indications and the results in patients treated for those indications need to be evaluated. Currently, although many patients undergo PAO after having had prior pelvic osteotomy, there is limited information regarding the efficacy of the PAO in these patients.

Short-term Complications Have More Effect on Cost-effectiveness of THA than Implant Longevity

David W. Shearer MD, MPH, Jiwon Youm MD, MS, Kevin J. Bozic MD, MBA

Outcomes research in THA has focused largely on long-term implant survivorship as a primary outcome and emphasized the development of new implant technologies. In contrast, strategies to improve short-term outcomes, such as the frequencies of periprosthetic joint infections and unplanned readmissions, have received less attention.

Sex Differences in Cartilage Topography and Orientation of the Developing Acetabulum: Implications for Hip Preservation Surgery

Jonathan B. Peterson MD, Josh Doan MEng, James D. Bomar MPH, Dennis R. Wenger MD, Andrew T. Pennock MD, Vidyadhar V. Upasani MD

Increased attention is being placed on hip preservation surgery in the early adolescent. An understanding of three-dimensional (3-D) acetabular development as children approach maturity is essential. Changes in acetabular orientation and cartilage topography have not previously been quantified as the adolescent acetabulum completes development.