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Is Second Generation Metal-On-Metal Primary Total Hip Arthroplasty With a 28mm Head a Worthy Option?: A 12- to 18-Year Follow-Up Study.

J Arthroplasty. 2013 Jul 24;

Authors: Hwang KT, Kim YH, Kim YS, Choi IY

To determine whether MoM THA with a small head is still worthy of use, we investigated survivorship, complications, and factors influencing failure. Of 149 consecutive patients (195 hips), 141 (180 hips) of mean age 43 (19-55) years were available for review at a mean of 14.4years postoperatively. Survivorship for cup revision for any cause was 97.8% at 18.4years postoperatively. Nine hips generated complaints of groin pain; six showed periacetabular osteolysis, one had pain without radiological change, and two were diagnosed as symptomatic pseudotumors. Four of six hips with periacetabular osteolysis or aseptic loosening were revised. Surgery- and patient-related factors had no effect in results. Our results are encouraging, however, further study will be necessary to determine the incidence and fates of pseudotumors after MoM THA with a small head.

PMID: 23890829 [PubMed - as supplied by publisher]