Early Dislocation Rate in Ceramic-on-Ceramic Total Hip Arthroplasty

Kenny Mai, MD
Division of Orthopaedics, Scripps Clinic

Mary E. Hardwick, MSN
Shiley Center for Orthopaedic Research and Education, Scripps Clinic

Richard H. Walker, MD
Division of Orthopaedics, Scripps Clinic

Steven N. Copp, MD
Division of Orthopaedics, Scripps Clinic

Kace A. Ezzet, MD
Division of Orthopaedics, Scripps Clinic

Clifford W. Colwell, Jr., MD
Division of Orthopaedics, Scripps Clinic
Shiley Center for Orthopaedic Research and Education, Scripps Clinic


Abstract
Wear debris from metal-on-polyethylene articulation in conventional total hip arthroplasty (THA) may limit THA longevity. Bearing surfaces made of modern ceramic material, with high wear resistance and low fracture risk, have the potential to extend the longevity of THA and make the procedure more suitable for young, active patients. Concerns regarding a ceramic-on-ceramic bearing surface have included potential for a higher incidence of dislocation caused by limited modular neck length and liner options. This prospective study assessed the early dislocation incidence for a ceramic-on-ceramic THA system. Out of the 336 consecutive ceramic-on-ceramic THA performed at our institution over an 8-year (1997-2005) period, 2 (0.6%) sustained dislocation during, and none after, the first postoperative year. Both dislocations were treated with closed reduction. No component fracture or revision for any reason has occurred in this series.

This Article appears in HSS Journal: Volume 4, Number 1.
View the full article at springerlink.com.


About the HSS Journal
HSS Journal, an academic peer-reviewed journal, is published twice a year, February and September, and features articles by internal faculty and HSS alumni that present current research and clinical work in the field of musculoskeletal medicine performed at HSS, including research articles, surgical procedures, and case reports.


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