MODULUS Stem for Developmental Hip Dysplasia: Long-term Follow-up

Francesco M. Benazzo, Lucio Piovani, Alberto Combi, Loris Perticarini

Research output: Contribution to journalArticlepeer-review


Between October 2001 and December 2010, 143 patients with developmental dysplasia underwent hip arthroplasty surgery using a conical stem with modular necks (MODULUS system, Lima Corporate, Villanova di San Daniele del Friuli, Italy). Thirty (21.0%) patients had both hips replaced, for a total of 173 implants. The mean age at the time of surgery was 55 years (range: 22-81 years). The mean follow-up was 87 months (range: 36-146 months); average Harris Hip Score increased from 42 (range: 23-65) preoperatively to 92 (range: 76-100) at the last follow-up. Stem revision was required in two cases. The MODULUS stem showed good long-term clinical and radiographic results, with a Kaplan-Meier survivorship of 97.6% (95% CI: 94.8-100.0%) at 8 years.

Original languageEnglish
Pages (from-to)1747-1751
Number of pages5
JournalJournal of Arthroplasty
Issue number10
Publication statusPublished - Oct 1 2015


  • Conical stem
  • DDH
  • Developmental hip dysplasia
  • Modular stem
  • Total hip arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


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