Patients with Symptomatic Hip Osteoarthritis Have Altered Kinematics during Stair Ambulation

Tijana Popovic, Michael A. Samaan, Thomas M. Link, Sharmila Majumdar, Richard B. Souza

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Background: Osteoarthritis (OA) is a degenerative joint disease. Understanding contributing factors to slowing or stopping disease progression is crucial. There has been no research describing lower extremity kinematics of the hip, knee, and ankle during stair ambulation in individuals with hip OA. Objective: To explore the differences in lower extremity kinematics between participants with clinical and morphological findings of hip OA and controls. Design: A cross-sectional study. Setting: Clinical research laboratory. Participants: Participants with radiographic and symptomatic signs of hip OA (n = 42) and healthy controls (n = 30) were enrolled. Interventions: Participants underwent hip magnetic resonance imaging (MRI). The Scoring Hip Osteoarthritis with MRI (SHOMRI) method was used to assess cartilage abnormalities. Self-reported measures of hip pain and function were obtained using the Hip Disability and Osteoarthritis Outcome Score (HOOS). Participants were assigned into a symptomatic hip osteoarthritis group (HOA) with SHOMRI>0 and HOOS≤80, and a control group (CG) with SHOMRI = 0 and HOOS>90. Patients underwent 3D motion analysis during stair ascent/descent at self-selected speed. Main Outcome Measures: The primary outcome measurements were peak hip, knee, and ankle kinematics. General Estimation Equations were used to compare kinematics between groups (P ≤.05). Results: The HOA group ascended stairs with a more internally rotated hip (CG = 1.77 ± 6.3; HOA = 4.97 ± 4.2; P =.02), more abducted hip (CG = -5 ± 2.7, HOA = -3.5 ± 3; P =.02), and a more externally rotated knee (CG = -8.02 ± 3; HOA = -10.63 ± 6.3; P =.02) and ankle (CG = -11.8 ± 6.1; HOA = -16.3 ± 5.6; P =.01). Similarly, HOA participants descended stairs with a more extended knee (CG = -15.5 ± 4.9; HOA = -12 ± 4.9; P =.01), and more externally rotated knee (CG = -10.1 ± 4.4; HOA = -13.1 ± 6.6; P =.04) and ankle (CG = -13.5 ± 5.3; HOA = -17.9 ± 5.5; P =.002). Conclusion: Participants with hip OA-related morphology and symptoms ambulate stairs utilizing abnormal lower extremity mechanics.

Original languageEnglish
Pages (from-to)128-136
Number of pages9
JournalPM and R
Issue number2
StatePublished - Feb 2021

Bibliographical note

Publisher Copyright:
© 2020 American Academy of Physical Medicine and Rehabilitation

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation
  • Neurology
  • Clinical Neurology


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