The management of severe acetabular bone defects in revision hip arthroplasty using modular porous metal components
K. Lingaraj, MBBS, FRCSEd(Orth), Consultant Orthopaedic Surgeon; Y. H. Teo, MBBS, FRCSEd(Orth), Consultant Orthopaedic Surgeon; and N. Bergman, MBBS, FRACS(Orth), Consultant Orthopaedic Surgeon
Journal of Bone and Joint Surgery - British Volume, Vol 91-B, Issue 12, 1555-1560
We investigated the early results of modular porous metal components used in 23 acetabular reconstructions associated with major bone loss. The series included seven men and 15 women with a mean age of 67 years (38 to 81), who had undergone a mean of two previous revisions
(1 to 7).
Based on Paprosky’s classification, there were 17 type 3A and six type 3B defects. Pelvic discontinuity was noted in one case. Augments were used in 21 hips to support the shell and an acetabular component-cage construct was implanted in one case. At a mean follow-up of 41 months (24 to 62), 22 components remained well fixed. Two patients required rerevision of the liners for prosthetic joint instability. Clinically, the mean Harris Hip Score improved from 43.0 pre-operatively (14 to 86) to 75.7 post-operatively (53 to 100). The mean pre-operative Merle d’Aubigné score was 8.2 (3 to 15) and improved to a mean of 13.7 (11 to 18) post-operatively.
These short-term results suggest that modular porous metal components are a viable option in the reconstruction of Paprosky type 3 acetabular defects. More data are needed to determine whether the system yields greater long-term success than more traditional methods, such as reconstruction cages and structural allografts.
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- Third-Generation Ceramic-on-Ceramic Bearing Surfaces in Revision Total Hip Arthroplasty
- Corrosion of a Hip Stem With a Modular Neck Taper Junction
- Elevated Serum Concentrations of Cobalt, Chromium, Nickel, and Manganese After Metal-On-Metal Alloarthroplasty of the Hip
- Long-term Results for the Uncemented Zweymuller/Alloclassic Hip Endoprosthesis
- In Vivo Wear Rate of the Birmingham Hip Resurfacing Arthroplasty
- The management of severe acetabular bone defects in revision hip arthroplasty using modular porous metal components
- Cementation of a Polyethylene Liner Into a Metal Acetabular Shell
- Blood metal ion concentrations after hip resurfacing arthroplasty
- Migration of the Trabecular Metal Monoblock Acetabular Cup System
- Risk factors for inflammatory pseudotumour formation following hip resurfacing
- Primary Total Hip Arthroplasty With Duraloc Cup in Patients Younger Than 50 Years
- Ten-year follow-up of the non-porous Allofit cementless acetabular component
- Ceramic-on-ceramic bearing surface and risk of revision due to dislocation after primary total hip replacement