title: Kinematic Analysis of Gait Following Intra-articular Corticosteroid Injection into the Knee Joint with an Acute Exacerbation of Arthritis.
abstract: OBJECTIVE
  The objective of this study was to examine the effects of intra-articular corticosteroid injection (ICI) on ipsilateral knee flexion/extension, ankle dorsiflexion/plantarflexion (DF/PF), and hip abduction/adduction (abd/add) during stance phase in people with an acute exacerbation of rheumatoid arthritis (RA) of the knee joint. The study also assessed the effects of ICI on spatiotemporal parameters of gait and functional status in this group.
  
  
  METHODS
  Nine people with an exacerbation of RA of the knee were recruited. Kinematic and spatiotemporal gait parameters were obtained for each participant. Knee-related functional status was assessed using the Knee injury and Osteoarthritis Outcome Score (KOOS). Spatiotemporal gait parameters and joint angles (knee flexion, ankle DF/PF, hip abd/add) of the affected side were compared pre- and post-ICI.
  
  
  RESULTS
  Data for eight people were available for analysis. Median values for knee flexion and ankle PF increased significantly following ICI. Gait parameters of cadence, velocity, bilateral stride length, bilateral step length, step width, double-support percentage, and step time on the affected side also showed improvement. Pain and knee-related functional status as measured by the KOOS showed improvement.
  
  
  CONCLUSIONS
  This study demonstrated a beneficial short-term effect of ICI on knee-joint movements, gait parameters, and knee-related functional status in people with acute exacerbation of RA of the knee.
authors.affiliation: School of Rehabilitation Science, Faculty of Health Sciences, McMaster University, Hamilton, Ont.
authors.forename: Saurabh
authors.initials: S
authors.lastname: Mehta
authors.forename: Barbara L
authors.initials: BL
authors.lastname: Shay
authors.forename: Tony
authors.initials: T
authors.lastname: Szturm
authors.forename: Hani S
authors.initials: HS
authors.lastname: El-Gabalawy
mesh_terms: D000305:Adrenal Cortex Hormones; D001696:Biomechanical Phenomena; D005684:Gait; D006801:Humans; D007719:Knee Joint; D020370:Osteoarthritis, Knee; D016059:Range of Motion, Articular
chemical_list: D000305:Adrenal Cortex Hormones