Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Hip 719 articles

Articles

Valgus Hip With High Antetorsion Causes Pain Through Posterior Extraarticular FAI

Klaus A. Siebenrock MD, Simon Damian Steppacher MD, Pascal Cyrill Haefeli MD, Joseph Michael Schwab MD, Moritz Tannast MD

Valgus hips with increased antetorsion present with lack of external rotation and posterior hip pain that is aggravated with hip extension and external rotation. This may be the result of posterior femoroacetabular impingement (FAI).

Oxford Hip Scores at 6 Months and 5 Years Are Associated With Total Hip Revision Within the Subsequent 2 Years

Peter Devane MD, Geoffrey Horne MD, Daniel J. Gehling MD

The Oxford hip score (OHS) is commonly reported in research studies as a reflection of pain and function but it is unclear whether it predicts subsequent prosthesis failure.

Femoral Remodeling Around Charnley Total Hip Arthroplasty Is Unpredictable

Matthew J. Teusink MD, Katharine A. Callaghan BA, Noelle F. Klocke MS, Devon D. Goetz MD, John J. Callaghan MD

There are two unusual remodeling patterns of the proximal femur around well-fixed Charnley total hip arthroplasties: cortical thinning leading to endosteal widening around the femoral component and hypertrophy of the distal femoral cortex. Previous studies have shown remodeling patterns are affected by stem design and occur early postoperatively. It is unclear if these changes are related to patient demographics or if they progress throughout the lifetime of the implant.

Method of Fixation Does Not Influence the Overall Risk of Rerevision in First-time Cup Revisions

Maziar Mohaddes MD, Göran Garellick MD, PhD, Johan Kärrholm MD, PhD

During the last two decades, uncemented fixation has been increasingly preferred worldwide during cup revision surgery. In Sweden, the number of uncemented cup revisions has been increasing during the last decade. However, it is unclear whether the risk of rerevision differs between cemented and uncemented cups.

Are Antibiotics Necessary in Hip Arthroplasty With Asymptomatic Bacteriuria? Seeding Risk With/Without Treatment

José Cordero-Ampuero MD, PhD, Enrique González-Fernández MD, David Martínez-Vélez MD, Jaime Esteban MD, PhD

In patients with asymptomatic bacteriuria undergoing hip arthroplasty, the risk of prosthetic joint infection (PJI) and appropriateness of specific antibiotics are unclear.

Femoroacetabular Impingement Predisposes to Traumatic Posterior Hip Dislocation

Simon D. Steppacher MD, Christoph E. Albers MD, Klaus A. Siebenrock MD, Moritz Tannast MD, Reinhold Ganz MD

Traumatic posterior hip dislocation in adults is generally understood to be the result of a high-energy trauma. Aside from reduced femoral antetorsion, morphologic risk factors for dislocation are unknown. We previously noticed that some hips with traumatic posterior dislocations had evidence of morphologic features of femoroacetabular impingement (FAI), therefore, we sought to evaluate that possibility more formally.

Acetabular Liner With Focal Constraint to Prevent Dislocation After THA

Jacob T. Munro MBChB, Mihai H. Vioreanu MD, MCh, Bassam A. Masri MD, Clive P. Duncan MD, MSc

Dislocation continues to commonly cause failure after primary and revision total hip arthroplasty (THA). Fully constrained liners intended to prevent dislocation are nonetheless associated with a substantial incidence of failure by redislocation, mechanical failure, aseptic loosening, or a combination. Constrained liners with cutouts of the elevated rims can theoretically increase range of movement and therefore decrease the risk dislocation, but it is unclear if they do so in practice and whether they are associated with early wear or loosening.

Ceramic-on-ceramic Bearing Decreases the Cumulative Long-term Risk of Dislocation

Philippe Hernigou MD, Yasuhiro Homma MD, Olivier Pidet MD, Isaac Guissou MD, Jacques Hernigou MD

It is unclear whether late THA dislocations are related to mechanical impingement or to a biological mechanism that decreases the stability provided by the capsule (eg, inflammation secondary to osteolysis). It is also unknown if alumina-on-alumina bearing couples decrease the risk of late dislocation as a result of the absence of wear and osteolysis.

Is a Positive Femoroacetabular Impingement Test a Common Finding in Healthy Young Adults?

Lene B. Laborie MD, Trude G. Lehmann MD, Ingvild Ø. Engesæter MD, Lars B. Engesæter MD, PhD, Karen Rosendahl MD, PhD

Femoroacetabular impingement (FAI) is an incompletely understood clinical concept that implies pathomechanical changes in the hip as a cause for hip-related pain in young adults. While a positive anterior impingement test is suggestive of FAI, its association with clinical and radiographic findings remain unconfirmed in healthy young adults.

Readmission Rates in the State of Florida: A Reflection of Quality?

Carlos J. Lavernia MD, Jesus M. Villa MD, David A. Iacobelli MD

High readmission rates are viewed by the Centers for Medicare & Medicaid Services as a quality of care determinant but it is unclear whether readmission rates per se reflect quality and the drivers of readmissions after hip arthroplasty remain unclear.