Clinical Orthopaedics and Related Research ®

A Publication of The Association of Bone and Joint Surgeons ®

Hip 719 articles

Articles

Is There a Difference in Revision Risk Between Metal and Ceramic Heads on Highly Crosslinked Polyethylene Liners?

Guy Cafri PhD, MStat, Elizabeth W. Paxton MA, Rebecca Love MPH, RN, Stefano A. Bini MD, Steven M. Kurtz PhD

The most common bearing surface used among primary THAs worldwide is a metal or ceramic femoral head that articulates against a highly crosslinked ultrahigh-molecular-weight polyethylene (HXLPE) acetabular liner. Despite their widespread use, relatively little is known about the comparative effectiveness of ceramic versus metal femoral heads with respect to risk of revision and dislocation as well as the role of head size in this relationship.

The Role of Highly Selective Implant Retention in the Infected Hip Arthroplasty

Moataz El-Husseiny MB BCh, MRCS, Dip Sport M, MD (Res), Fares S. Haddad BSc, MCh(Orth), FRCS(Orth), MD (Res), FFSEM

There is debate around how to treat patients with periprosthetic joint infection of the hip. When there is an ingrown component on one side of the arthroplasty and a loose component on the other, treatment is typically revision of the entire construct. There is an argument to retain an ingrown implant in instances in which removal would result in severe bone damage. However, little has been reported on the likelihood of success with this approach.

Does Surface Topography Play a Role in Taper Damage in Head-neck Modular Junctions?

Robin Pourzal PhD, Deborah J. Hall BS, Nguyen Q. Ha BA, Robert M. Urban, Brett R. Levine MD, Joshua J. Jacobs MD, Hannah J. Lundberg PhD

There are increasing reports of total hip arthroplasty failure subsequent to modular taper junction corrosion. The surfaces of tapers are machined to have circumferential machining marks, resulting in a surface topography of alternating peaks and valleys on the scale of micrometers. It is unclear if the geometry of this machined surface topography influences the degree of fretting and corrosion damage present on modular taper junctions or if there are differences between modular taper junction material couples.

Is Model-based Radiostereometric Analysis Suitable for Clinical Trials of a Cementless Tapered Wedge Femoral Stem?

Sanaz Nazari-Farsani MSc, Sami Finnilä BM, Niko Moritz PhD, Kimmo Mattila MD, PhD, Jessica J. Alm MSc, Hannu T. Aro MD, PhD

In clinical trials of THA, model-based radiostereometric analysis (RSA) techniques may be less precise than conventional marker-based RSA for measurement of femoral stem rotation. We verified the accuracy and clinical precision of RSA based on computer-aided design models of a cementless tapered wedge femoral stem.

Cementless Total Hip Arthroplasty With Metasul Bearings Provides Good Results in Active Young Patients: A Concise Followup

Christian P. Delaunay MD, Sophie Putman MD, Benjamin Puliéro MD, Matthieu Bégin MD, Henri Migaud MD, François Bonnomet MD

A primary concern of younger, more active patients who have undergone total hip arthroplasty (THA) is the longevity of the implant. Cementless fixation and hard-on-hard bearings are recognized as options to enhance THA durability. Earlier, we published a series of 83 cementless primary THAs using 28-mm metal-on-metal (MoM) bearings in patients aged 50 years or younger; here we provide concise followup on that same group after an additional 8-year survey period.

Do the Reasons for Ceramic-on-ceramic Revisions Differ From Other Bearings in Total Hip Arthroplasty?

Henri Migaud MD, Sophie Putman MD, Grégory Kern MD, Ronald Isida MD, Julien Girard MD, PhD, Nassima Ramdane PhD, Christian P. Delaunay MD, Moussa Hamadouche MD, PhD

Despite widespread use of ceramic-on-ceramic (CoC) in total hip arthroplasty (THA) during the past 10 years, little is known about why revisions are performed in hips with this bearing or the time elapsed before revision.

Periprosthetic Joint Infection in Hip Arthroplasty: Is There an Association Between Infection and Bearing Surface Type?

Rocco P. Pitto MD, PhD, Laurent Sedel MD

Preliminary studies have raised the question of whether certain prosthetic biomaterials used in total hip arthroplasty (THA) bearings are associated with increased risk of periprosthetic joint infection (PJI). For example, some observational data suggest the risk of PJI is higher with metal-on-metal bearings. However, it is not known whether other bearings—including ceramic bearings or metal-on-polyethylene bearings—may be associated with a higher or lower risk of PJI.

Otto Aufranc Award: A Multicenter, Randomized Study of Outpatient versus Inpatient Total Hip Arthroplasty

Nitin Goyal MD, Antonia F. Chen MD, MBA, Sarah E. Padgett PA-C, Timothy L. Tan MD, Michael M. Kheir MD, Robert H. Hopper PhD, William G. Hamilton MD, William J. Hozack MD

Length of stay after total hip arthroplasty (THA) has decreased over the last two decades. However, published studies that have examined same-day and early discharge protocols after THA have been done in highly selected patient groups operated on by senior surgeons in a nonrandomized fashion without control subjects.

How Reliable Is the Alpha-defensin Immunoassay Test for Diagnosing Periprosthetic Joint Infection? A Prospective Study

Tommaso Bonanzinga MD, Akos Zahar MD, Michael Dütsch MSc, Christian Lausmann MD, Daniel Kendoff MD, PhD, Thorsten Gehrke MD

A key issue in the treatment of periprosthetic joint infection (PJI) is the correct diagnosis. The main problem is lack of diagnostic tools able to diagnose a PJI with high accuracy. Alpha-defensin has been proposed as a possible solution, but in the current literature, there is a lack of independent validation.

No Correlation Between Serum Markers and Early Functional Outcome After Contemporary THA

Kirsten L. Poehling-Monaghan MD, Michael J. Taunton MD, Atul F. Kamath MD, Robert T. Trousdale MD, Rafael J. Sierra MD, Mark W. Pagnano MD

Serum markers of inflammation and muscle damage have shown clinical utility in some areas of medicine, but their value in determining the invasiveness or in predicting the early functional outcomes after total hip arthroplasty (THA) has not been demonstrated.