Uncemented press-fit total hip arthroplasty using the identifit custom-molding technique: A prospective minimum 2-year follow-up study

Raymond P. Robinson, James E. Clark

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

Fifty-three primary uncemented custom-molded Identiflt (Depuy, Warsaw, IN) hip arthroplasties were evaluated prospectively at a mean follow-up period of 30 months. The custom technique provided the capability to reproduce the unique femoral offset, version, and height in each hip and to achieve high percentages of femoral canal fill. Surgical time for unilateral cases was a mean 153 minutes. Clinical results, however, were disappointing. Nine hips (17%) required stem revision for persistent thigh pain and limping. Of the remaining 44 hips, the mean Harris hip score was 83, and 20% experienced moderate to severe thigh pain and 50% had a limp. Radiographically, 65% of the stems had subsided and 27% had migrated into valgus. Survivorship analysis predicted an 80% stem survival rate at 43 months. A precise fit and fill of the femoral canal is not in itself sufficient for femoral implant stability in total hip arthroplasty surgery.

Original languageEnglish (US)
Pages (from-to)247-254
Number of pages8
JournalJournal of Arthroplasty
Volume11
Issue number3
DOIs
StatePublished - Jan 1 1996
Externally publishedYes

Keywords

  • Identifit custom-molded total hip arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

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