Comparison of Body Weight Distribution, Peak Vertical Force, and Vertical Impulse as Measures of Hip Joint Pain and Efficacy of Total Hip Replacement

Rachel Seibert, Denis J Marcellin-Little, Simon C. Roe, Venita Depuy, B. Duncan X Lascelles

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Objective: To determine whether there is a difference between the ability of peak vertical force (PVF), vertical impulse (VI), and percentage body weight distribution (%BWdist) in differentiating which leg is most affected by hip joint pain before total hip replacement (THR) surgery, and for measuring changes in limb use after THR surgery. Study Design: Prospective clinical study. Animals: Dogs (n = 47). Methods: Ground reaction force (GRF) data were collected using a pressure-sensitive walkway the day before THR surgery and at ~3, 6, and 12 months postoperatively. PVF and VI expressed as a percentage of body weight (%PVF, %VI), and %BWdist were recorded. Regression models performed separately for each outcome were used for statistical analysis. Results: When comparing limb use between the affected limb (AP) and the nonaffected limb (NP) preoperatively, differences between limbs were statistically significant when evaluated using PVF (P = .023), VI (P = .010), and %BWdist (P = .012). When evaluating the magnitude of absolute and percentage change difference in AP limb use preoperatively versus postoperatively, differences were statistically significant when evaluated using PVF (P < .001 and P = .001, respectively), VI (P = .001 and P < .001) and %BWdist (P < .001 and P < .001). Conclusion: There appeared to be no difference in the sensitivity of VI, PVF, and %BWdist for evaluating limb use before and after THR.

Original languageEnglish (US)
Pages (from-to)443-447
Number of pages5
JournalVeterinary Surgery
Volume41
Issue number4
DOIs
StatePublished - May 1 2012
Externally publishedYes

ASJC Scopus subject areas

  • veterinary(all)

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