Effect of femoral offset on range of motion and abductor muscle strength after total hip arthroplasty

B. J. McGrory, B. F. Morrey, T. D. Cahalan, K. N. An, M. E. Cabanela

Research output: Contribution to journalArticle

339 Scopus citations

Abstract

At a minimum of one year after operation, we studied 64 patients with 86 total hip arthroplasties (THA) by standard anteroposterior hip and pelvic radiographs and measurement of range of motion and of isometric abduction strength. The femoral offset correlated positively with the range of abduction (p = 0.046). Abduction strength correlated positively with both femoral offset (p = 0.0001) and the length of the abductor lever arm (p = 0.005). Using multiple regression, abduction strength correlated with height (p = 0.017), gender (p = 0.0005), range of flexion (p = 0.047) and the abductor lever arm (p = 0.060). Our findings suggest that greater femoral offset after THA allows both an increased range of abduction and greater abductor strength.

Original languageEnglish (US)
Pages (from-to)865-869
Number of pages5
JournalJournal of Bone and Joint Surgery - Series B
Volume77
Issue number6
DOIs
StatePublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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