Outcome of Porous Tantalum Acetabular Components for Paprosky Type 3 and 4 Acetabular Defects

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• 作者：Eldridge D. Batuyong ; MD ; Hugh S. Brock ; MD ; Nikhil Thiruvengadam ; BS ; William J. Maloney ; MD ; Stuart B. Goodman ; MD ; PhD ; James I. Huddleston ; MD
• 关键词：porous tantalum ; acetabulum ; osseointegration ; Harris Hip Score ; radiolucent line ; revision hip surgery
• 刊名：The Journal of Arthroplasty
• 出版年：June 2014
• 年：2014
• 卷：29
• 期：6
• 页码：1318-1322
• 全文大小：285 K

文摘

Porous tantalum acetabular implants provide a potential solution for dealing with significant acetabular bone loss. This study reviews 24 acetabular revisions using tantalum implants for Paprosky type 3 and 4 defects. The mean Harris Hip Score improved from 35 ± 19 (range, 4–71) to 88 ± 14 (range, 41–100), p < 0.0001. Postoperative radiographs showed radiolucent lines in 14 hips with a mean width of 1.3 ± 1.0 mm (range, 0.27–4.37 mm). No gaps enlarged and 71% of them disappeared at a mean of 13 ± 10 months (range, 3–29 months). At a mean follow-up of 37 ± 14 months (range, 24–66 months), 22 reconstructions showed radiograpic evidence of osseointegration (92%). The two failures were secondary to septic loosening. When dealing with severe acetabular bone loss, porous tantalum acetabular components show promising short-term results.