The Journal of Bone and Joint Surgery (American). 2006;88:1549-1552.
doi:10.2106/JBJS.E.00624
© 2006 The Journal of Bone and Joint Surgery, Inc.
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 Adult Hip Reconstruction Test 21: Fall 2006 (publication date November 15, ...
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Primary Cementless Acetabular Components in Hips with Severe Developmental Dysplasia or Total Dislocation

A Concise Follow-up, at an Average of Sixteen Years, of a Previous Report*

Brett J. Hampton, MD1 and William H. Harris, MD2

1 Department of Orthopedics and Rehabilitation, Walter Reed Army Medical Center, 6900 Georgia Avenue, N.W., Washington, DC 20307
2 Harris Orthopaedic Biomechanics and Biomaterials Laboratory, Massachusetts General Hospital, 55 Fruit Street, GRJ 1126, Boston, MA 02114. E-mail address: wharris.obbl{at}partners.org

Investigation performed at the Orthopaedic Biomechanics and Biomaterials Laboratory and Orthopaedic Services, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts

Anderson MJ, Harris WH. Total hip arthroplasty with insertion of the acetabular component without cement in hips with total congenital dislocation or marked congenital dysplasia. J Bone Joint Surg Am. 1999;81:347-54.

In support of their research for or preparation of this manuscript, one or more of the authors received grants or outside funding from the William H. Harris Foundation (Boston, Massachusetts). In addition, one or more of the authors received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity (Zimmer, Inc.). Also, a commercial entity (Zimmer, Inc.) paid or directed, or agreed to pay or direct, benefits to a research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.

* Original Publication

We previously reported the seven-year results of the use of a hemispherical, porous-coated acetabular component in twenty consecutive primary total hip arthroplasties in a highly selected group, namely, patients with severe developmental dysplasia or total dislocation of the hip. The present report describes the outcomes of those hips nine years later, at an average follow-up of sixteen years (range, 11.5 to nineteen years). Since the time of our prior report, two shells were revised; one revision was done because of aseptic loosening and the other, because of polyethylene liner dissociation without tine fracture. The remaining shells were well fixed. No pelvic osteolysis was evident on plain radiographs. The average polyethylene liner wear rate was 0.09 mm/yr. With failure defined as aseptic loosening of the shell, the average sixteen-year survival for the shell was 92%. We believe that this cup had excellent fixation at a long duration of follow-up of sixteen years in this highly selected set of patients with difficult hip problems.

Level of Evidence: Therapeutic Level IV. See Instructions to Authors for a complete description of levels of evidence.


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