title: Walking and chair rising performed in the daily life situation before and after total hip arthroplasty.
abstract: OBJECTIVE
  An earlier study showed that 6 months after total hip arthroplasty (THA) patients' overall daily activity level had not increased, despite significant improvement in their perceived physical functioning. This discrepancy might be because postoperative recovery is not expressed by a more overall active lifestyle, but by the fact that patients could perform the individual activities of daily living (ADL) faster and/or for a longer period of time. The aim of this study was to assess whether patients perform ADL faster and/or for a longer period of time 6 months post-THA compared to baseline. Also examined was whether patients perform activities on the level of healthy matched controls.
  
  
  METHODS
  Thirty patients were measured at home with an accelerometry-based Activity Monitor, pre-operatively and 6 months post-THA. Patients were matched with healthy controls on gender and age (±2 years).
  
  
  RESULTS
  Compared with baseline, 6 months post-THA the stride frequency and body motility during walking of patients had increased [56.1 (54.3, 57.8)strides/min vs 52.1 (50.3, 54.1)strides/min; P-value<0.0001, and 0.265 (0.245, 0.286)g vs 0.219 (0.197, 0.240)g; P-value<0.0001], and they rose faster from a chair [2.6 (2.5, 2.8)s vs 3.0 (2.8, 3.2)s; P-value<0.0001]. Compared with controls, preoperative all patients had lower values for these parameters. Six months post-THA the stride frequency and body motility during walking were similar to that of controls, but patients rose slower from a chair than controls.
  
  
  CONCLUSIONS
  Six months post-THA patients walked faster and rose from a chair faster compared to baseline. Patients walked as fast as healthy controls but took longer rising from a chair.
authors: Department of Orthopaedics, Erasmus University Medical Centre, Rotterdam, The Netherlands. m.m.vissers@erasmusmc.nl
authors: M M
authors: MM
authors: Vissers
authors: J B J
authors: JB
authors: Bussmann
authors: I B
authors: IB
authors: de Groot
authors: J A N
authors: JA
authors: Verhaar
authors: M
authors: M
authors: Reijman
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000534:rehabilitation*; D016022:Case-Control Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D018670:Monitoring, Ambulatory; D009043:Motor Activity / Q000502:physiology; D015207:Osteoarthritis, Hip / Q000534:rehabilitation* / Q000601:surgery; D011184:Postoperative Period; D011446:Prospective Studies; D020127:Recovery of Function / Q000502:physiology*; D016896:Treatment Outcome; D016138:Walking / Q000502:physiology