Table 4.

Clinical outcome data

Outcome	Nonobese group	Morbidly obese group	p value
Knee Society pain score (95% CI)
Preoperative	58 (56–60)	50 (47–53)	< 0.01
2-year followup	92 (90–93)	81 (77–85)	< 0.01
5-year followup	90 (88–92)	76 (72–80)	< 0.01
10-year followup	90 (88–92)	76 (71–81)	< 0.01
Knee Society function score (95% CI)
Preoperative	43 (39–48)	38 (34–42)	0.10
2-year followup	72 (68–77)	54 (49–60)	< 0.01
5-year followup	67 (61–73)	59 (42–55)	< 0.01
10-year followup	61 (53–69)	57 (42–52)	< 0.01
Pain at most recent followup (number of patients; %)			0.02
None	44 (47)	27 (29)
Mild	36 (39)	39 (42)
Moderate	13 (14)	23 (25)
Severe	0 (0)	2 (2)