Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Hip 725 articles


A Squeaky Reputation: The Problem May Be Design-dependent

Javad Parvizi MD, FRCS, Bahar Adeli BA, Justin C. Wong MD, Camilo Restrepo MD, Richard H. Rothman MD, PhD

Squeaking is reportedly a complication in patients having ceramic-on-ceramic total hip implants. The etiology remains unknown and multifactorial with recent studies suggesting a relationship between the audible squeak and implant design. When we evaluated our ceramic-on-ceramic cohort, we noticed squeaking primarily in patients receiving an acetabular system designed with an elevated titanium rim.

Effects of Delayed Hip Fracture Surgery on Mortality and Morbidity in Elderly Patients

Pedro Rodriguez-Fernandez MD, PhD, Dolores Adarraga-Cansino MD, PhD, Pedro Carpintero MD, PhD

The effects of delaying hip fracture surgery on mortality and morbidity in elderly patients are not completely understood.

Functional and Anatomic Orientation of the Femoral Head

David Wright BSc, Cari Whyne PhD, Michael Hardisty MSc, Hans J. Kreder MD, MPH, FRCS, Omri Lubovsky MD

Femoral neck geometry directly affects load transmission through the hip. Orientations may be described anatomically or using functional definitions that consider load transmission.

Factors and Consequences of Waiting Times for Total Hip Arthroplasty

Itziar Vergara MD, MPH, Amaia Bilbao MSc, Nerea Gonzalez PhD, Antonio Escobar MD, PhD, José M. Quintana MD, PhD

Various priority criteria for waiting lists for THA have been proposed. These criteria, however, are not typically included in clinical practice, resulting in unclear management procedures. Further, the clinical effects of waiting times on subsequent pain control or function are unclear.

Pelvic Deformity Influences Acetabular Version and Coverage in Hip Dysplasia

Masanori Fujii MD, Yasuharu Nakashima MD, Taishi Sato MD, Mio Akiyama MD, Yukihide Iwamoto MD

Although a wide variety of acetabular deformities in developmental dysplasia of the hip (DDH) have been reported, the morphologic features of the entire pelvis in DDH are not well characterized and their correlation with acetabular deformity is unknown.

Does Arthroscopic FAI Correction Improve Function with Radiographic Arthritis?

Christopher M. Larson MD, M. Russell Giveans PhD, Mehul Taylor MD

Previous studies reporting the impact of osteoarthritis (OA) on pain and function after hip arthroscopy largely predate resection of femoroacetabular impingement (FAI).

Emerging Ideas: Shared Decision Making in Patients with Osteoarthritis of the Hip and Knee

Kevin J. Bozic MD, MBA, Vanessa Chiu MPH

Despite the widely reported success of total joint arthroplasty (TJA) in reducing pain and improving quality of life and function for patients with hip or knee osteoarthritis, rates of TJA use vary widely throughout the United States, with broad disparities based on geographic, racial, and socioeconomic factors. Shared decision-making approaches, which require an exchange of information between patients and their physicians, can be helpful in improving patient satisfaction with their treatment decision and appropriate use of TJA.

Is Mid-head Resection a Durable Conservative Option in the Presence of Poor Femoral Bone Quality and Distorted Anatomy?

Derek J. W. McMinn MD, FRCS, Chandra Pradhan FRCS, MCh(Orth), Hena Ziaee BSc(Hons), Joseph Daniel FRCS, MS(Orth)

High medium-term survivorship of hip resurfacing arthroplasty in young patients has led to its increased usage. To achieve high survival rates, selecting patients with appropriate proximal femoral morphology and bone quality is important. For patients with poor bone quality or abnormal morphology, the mid-head resection technique is an alternative, bone-conserving procedure but whether this technique results in acceptable complications and survival is unknown.

Acetabular Anteversion with CT in Supine, Simulated Standing, and Sitting Positions in a THA Patient Population

Jean-Yves Lazennec MD, PhD, Patrick Boyer MD, PhD, Michel Gorin MD, Yves Catonné MD, Marc Antoine Rousseau MD, PhD

Appraisal of the orientation of implants in THA dislocations currently is based on imaging done with the patient in the supine position. However, dislocation occurs in standing or sitting positions. Whether measured anteversion differs in images projected in the position of dislocation is unclear.

Do First-generation Highly Crosslinked Polyethylenes Oxidize In Vivo?

Daniel MacDonald BS, Ashlyn Sakona BS, Allyson Ianuzzi PhD, Clare M. Rimnac PhD, Steven M. Kurtz PhD

Highly crosslinked and thermally treated polyethylenes were clinically introduced to reduce wear and osteolysis. Although the crosslinking process improves the wear performance, it also introduces free radicals into the polymer that can subsequently oxidize. Thermal treatments have been implemented to reduce oxidation; however, the efficacy of these methods with regard to reducing in vivo oxidative degradation remains to be seen. Polyethylene oxidation is a concern because it can compromise the ultimate strength and ductility of the material.