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Table 5 Watchful waiting studies

From: The effectiveness of metal on metal hip resurfacing: a systematic review of the available evidence published before 2002

Study (Study Design) Funding source Patient Characteristics Patients pain level at baseline Patients pain level at follow-up Use of walking aids Notes
Dieppe (1997) [16] Single orthopedic unit (UK) Follow up: Mean (range) 37.6 months (31–41) (Observational study Arthritis and Rheumatism Council N = 84 patients
Mean age (SD): 50 (12.1)
None = 7%
Mild = 48%
Moderate = 31%
Severe = 10%
None = 4%
Mild = 50%
Moderate = 32%
Severe = 14%
9 patients (32 %) at baseline
8 patients (29%) at 3 year follow up
All patients had symptomatic limb joint osteoarthritis. Surgery performed in 9 patients (32%)
Dieppe (2000) [17] Single orthopedic unit (UK) Follow up: Mean (range) NR (36–96) (Observational study) Arthritis and Rheumatism Council N = 29 patients
Mean age (SD): 50 (12.1)
None = 7%
Mild = 48%
Moderate = 31%
Severe = 10%
None = 3%
Mild = 34%
Moderate = 48%
Severe = 14%
12 patients (41%) at 8 year follow up All patients had symptomatic limb joint osteoarthritis. Surgery performed in 14 patients (48%)
  1. Note: The studies above involve the same population, but have different length of follow up.
  2. NR: Not Reported.