Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Hip 725 articles


Can Radiographic Morphometric Parameters for the Hip Be Assessed on MRI?

David Stelzeneder MD, Andreas Hingsammer MD, Sarah D. Bixby MD, Young-Jo Kim MD, PhD

Although morphometric hip parameters measured on radiographs are valuable tools guiding diagnosis and therapy in patients with hip disorders, some clinicians use MRI for such measurements, although it is unclear whether the parameters assessed on MRI differ from those assessed on radiographs.

Lateral Center-edge Angle on Conventional Radiography and Computed Tomography

Shafagh Monazzam MD, James D. Bomar MPH, Krishna Cidambi MD, Peter Kruk MD, Harish Hosalkar MD

Lateral center-edge angle (LCEA), originally described and validated on AP radiographs, has been used increasingly in CT-based studies, but it is unclear whether the measure is reliable and whether it correlates with that on AP radiographs.

Patients Report Improvement in Quality of Life and Satisfaction After Hip Resurfacing Arthroplasty

Wael A. Rahman MD, Nelson V. Greidanus MD, MPH, Alexander Siegmeth MD, Bassam A. Masri MD, Clive P. Duncan MD, MSc, Donald S. Garbuz MD, MHSc

A number of reconstructive procedures are available for the management of hip osteoarthritis. Hip resurfacing arthroplasty is now an accepted procedure, with implant survivorship comparable to THA at up to 10 years’ followup in certain series. Most reports focus on implant survivorship, surgeon-derived results, or complications. Fewer data pertain to patient-reported results, including validated measures of quality of life (QoL) and satisfaction and baseline measures from which to determine magnitude of improvement. Validated patient-reported results are essential to guide patients and surgeons in the current era of informed and shared decision making.

Intraprosthetic Dislocation: A Specific Complication of the Dual-mobility System

Remi Philippot MD, PhD, Bertrand Boyer MD, Frederic Farizon MD

The dual-mobility concept was proposed as an alternative to prevent postoperative dislocation events. However, intraprosthetic dislocation (IPD) is a troublesome and specific complication induced by the loss of the polyethylene retentive rim and escape of the femoral head from the polyethylene liner. The factors associated with IPD are unknown as only isolated cases have been reported and do not provide a clear understanding of the mechanisms of failure.

Surgical Technique: Endoscopic Gluteus Maximus Tendon Release for External Snapping Hip Syndrome

Giancarlo C. Polesello MD, PhD, Marcelo C. Queiroz MD, Benjamin G. Domb MD, Nelson K. Ono MD, PhD, Emerson K. Honda MD, PhD

While many authors have recommended surgery for patients with persistent symptoms of external snapping hip, it is unclear which one best relieves symptoms. Concerns with iliotibial band (ITB)-modifying techniques include altering the shape of the lateral thigh and overload of the contralateral abduction mechanism. We describe a new endoscopic technique that decreases the tension of the ITB complex by releasing the femoral insertion of the gluteus maximus tendon (GMT).

Is the Damage of Cartilage a Global or Localized Phenomenon in Hip Dysplasia, Measured by dGEMRIC?

Andreas Hingsammer MS, Jenny Chan MS, Leslie A. Kalish ScD, Tallal C. Mamisch MD, Young-Jo Kim MD, PhD

The mechanism of damage in osteoarthritis is believed to be multifactorial where mechanical and biological factors are important in its initiation and progression. Hip dysplasia is a classic model of increased mechanical loading on cartilage attributable to insufficient acetabular coverage that leads to osteoarthritis. If the damage is all attributable to direct mechanical damage then one initially would expect only local, not global changes.

Surgical Technique: Arthroscopic Treatment of Heterotopic Ossification of the Hip After Prior Hip Arthroscopy

Crispin Ong MD, Michael Hall MD, Thomas Youm MD

The incidence of heterotopic ossification (HO) after hip arthroscopy reportedly ranges from less than 1.0% to 6.3%. Although open debridement has been described and a few series mention arthroscopic debridement, the techniques for arthroscopic excision of HO have not been described in detail. We describe the arthroscopic treatment of this complication.

Does Valgus Femoral Osteotomy Improve Femoral Head Roundness in Severe Legg-Calvé-Perthes Disease?

Hui Taek Kim MD, Ja Kyung Gu MD, Sung Ho Bae MD, Jae Hoon Jang MD, Jong Seo Lee MD

Many surgeons perform a varus femoral or Salter pelvic osteotomy in patients with Legg-Calvé-Perthes (LCP) disease. However, more severely deformed femoral heads show greater congruency in adduction rather than in abduction. Therefore, a valgus-(flexion) femoral osteotomy (VFO) seems preferable rather than a varus femoral or Salter pelvic osteotomy.

Estimating Risk in Medicare Patients With THA: An Electronic Risk Calculator for Periprosthetic Joint Infection and Mortality

Kevin J. Bozic MD, MBA, Kevin Ong PhD, Edmund Lau MS, Daniel J. Berry MD, Thomas P. Vail MD, Steven M. Kurtz PhD, Harry E. Rubash MD

Although risk factors for periprosthetic joint infection (PJI) and mortality after total hip arthroplasty (THA) have been identified, interactions between specific patient risk factors are poorly understood. Therefore, it is difficult for surgeons to counsel patients on their individual risk of PJI or mortality after THA.