. 2015 Dec;6(4):269–275. doi: 10.1177/2151458515604357

Table 4.

Pre and Postoperative: WOMAC, VAS, Friedman-Wyman Disability Scores, Walking Ability, and 30-Second Timed Chair Test Results.

Surgical Population (n = 274)	WOMAC (%)		VAS		Friedman-Wyman Score (%)			Walking Ability (%)				30-Second Timed Chair Test, Range
Surgical Population (n = 274)	Mean	Range	Mean	Range	Good	Fair	Poor	IV	III	II	I	30-Second Timed Chair Test, Range
Preoperative	46	41-61	5	3-8	0	44	56	28	52	8	12	4-10
Postoperative^a	28	22-32	2	0-4	20	75	5	65	29	4	2	8-13

Abbreviation: VAS, Visual Analog Scale; WOMAC, Western Ontario and McMaster’s Universities osteoarthritis index.

^aArtroplasty (n = 206 cases) and arthroscopy (n = 68 cases), P = .03.