Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Hip 721 articles


The EQ-5D-5L Improves on the EQ-5D-3L for Health-related Quality-of-life Assessment in Patients Undergoing Total Hip Arthroplasty

Meridith E. Greene BA, Kevin A. Rader PhD, Göran Garellick MD, PhD, Henrik Malchau MD, PhD, Andrew A. Freiberg MD, Ola Rolfson MD, PhD

The EQ-5D is a generic health survey that can be used to compare improvement across different interventions, measure changes in health-related quality of life over time, or to explore cost-effectiveness among treatments, hospitals, or providers. The original EQ-5D survey has three response options for each of five health dimensions; however, with so few response options, ceiling and floor effects are problematic in some populations. A new version, called the EQ-5D-5L, was developed, which gives respondents five answer options (the “5L” refers to five response levels, which is in contrast to the original survey’s three levels). However, the validity of this version has not, to our knowledge, been evaluated in patients undergoing total hip arthroplasty (THA).

Periacetabular Osteotomy Restores the Typically Excessive Range of Motion in Dysplastic Hips With a Spherical Head

Simon D. Steppacher MD, Corinne A. Zurmühle MD, Marc Puls PhD, Klaus A. Siebenrock MD, Michael B. Millis MD, Young-Jo Kim MD, PhD, Moritz Tannast MD

Residual acetabular dysplasia is seen in combination with femoral pathomorphologies including an aspherical femoral head and valgus neck-shaft angle with high antetorsion. It is unclear how these femoral pathomorphologies affect range of motion (ROM) and impingement zones after periacetabular osteotomy.

Does Radiographic Coxa Profunda Indicate Increased Acetabular Coverage or Depth in Hip Dysplasia?

Masanori Fujii MD, PhD, Tetsuro Nakamura MD, Toshihiko Hara MD, Yasuharu Nakashima MD, PhD, Yukihide Iwamoto MD, PhD

Although radiographic coxa profunda has been considered an indicator of acetabular overcoverage, recent studies suggest that radiographic coxa profunda is a nonspecific finding seen even in hip dysplasia. The morphologic features of coxa profunda in hip dysplasia and the frequency with which the two overlap are not well defined.

Do Claims-based Comorbidities Adequately Capture Case Mix for Surgical Site Infections?

Hilal Maradit Kremers MD, Laura W. Lewallen MD, Brian D. Lahr MS, Tad M. Mabry MD, James M. Steckelberg MD, Daniel J. Berry MD, Arlen D. Hanssen MD, Elie F. Berbari MD, Douglas R. Osmon MD

There is increasing interest in using administrative claims data for surveillance of surgical site infections in THAs and TKAs, but the performance of claims-based models for case-mix adjustment has not been well studied. Performance of claims-based models can be improved with the addition of clinical risk factors for surgical site infections.

Comparative Epidemiology of Revision Arthroplasty: Failed THA Poses Greater Clinical and Economic Burdens Than Failed TKA

Kevin J. Bozic MD, MBA, Atul F. Kamath MD, Kevin Ong PhD, Edmund Lau MS, Steve Kurtz PhD, Vanessa Chan MPH, Thomas P. Vail MD, Harry Rubash MD, Daniel J. Berry MD

Revision THA and TKA are growing and important clinical and economic challenges. Healthcare systems tend to combine revision joint replacement procedures into a single service line, and differences between revision THA and revision TKA remain incompletely characterized. These differences carry implications for guiding care and resource allocation. We therefore evaluated epidemiologic trends associated with revision THAs and TKAs.

Increased Risk of Periprosthetic Femur Fractures Associated With a Unique Cementless Stem Design

Chad D. Watts MD, Matthew P. Abdel MD, David G. Lewallen MD, Daniel J. Berry MD, Arlen D. Hanssen MD

Postoperative periprosthetic femur fractures are an increasing concern after primary total hip arthroplasty (THA). Identifying and understanding predisposing factors are important to mitigating future risk. Femoral stem design may be one such factor.

What Is the Impingement-free Range of Motion of the Asymptomatic Hip in Young Adult Males?

Brian Larkin MD, Marnix Holsbeeck MD, Denise Koueiter MS, Ira Zaltz MD

Femoroacetabular impingement is a recognized cause of chondrolabral injury. Although surgical treatment for impingement seeks to improve range of motion, there are very little normative data on dynamic impingement-free hip range of motion (ROM) in asymptomatic people. Hip ultrasound demonstrates labral anatomy and femoral morphology and, when used dynamically, can assist in measuring range of motion.

Residual Deformity Is the Most Common Reason for Revision Hip Arthroscopy: A Three-dimensional CT Study

James R. Ross MD, Christopher M. Larson MD, Olusanjo Adeoyo MD, Bryan T. Kelly MD, Asheesh Bedi MD

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.

Twelve Percent of Hips With a Primary Cam Deformity Exhibit a Slip-like Morphology Resembling Sequelae of Slipped Capital Femoral Epiphysis

Christoph E. Albers MD, Simon D. Steppacher MD, Pascal C. Haefeli MD, Stefan Werlen MD, Markus S. Hanke MD, Klaus A. Siebenrock MD, Moritz Tannast MD

In some hips with cam-type femoroacetabular impingement (FAI), we observed a morphology resembling a more subtle form of slipped capital femoral epiphysis (SCFE). Theoretically, the morphology in these hips should differ from hips with a primary cam-type deformity.

Delayed Slipped Capital Femoral Epiphysis After Treatment of Femoral Neck Fracture in Children

Hai Li MD, PhD, Li Zhao MD, PhD, Luyu Huang MD, PhD, Ken N Kuo MD

Slipped capital femoral epiphysis (SCFE) after the treatment of femoral neck fracture is a rare entity in children that poses important treatment challenges.