The role of patient expectations in predicting outcome after total knee arthroplasty

Table 2 Distribution of baseline expectations and actual status at 2-year follow-up for pain and for function

Expected status, declared pre operation	Actual status 2 years post operation
How painful?	Not at all	Slightly	Moderately	Very	All options
Not at all	45 (43)	32 (30)	12 (8)	5 (4)	94 (85)
Slightly	3 (2)	4 (4)	7 (4)	3 (3)	17 (13)
Moderately	-	-	-	-	-
Very	-	-	-	-	-
All options	48 (45)	36 (34)	19 (12)	8 (7)	111^a (98)
How limited in function?	Not at all	Slightly	Moderately	Greatly	All options
Not at all	16 (16)	22 (21)	15 (10)	5 (3)	58 (50)
Slightly	5 (5)	12 (12)	18 (17)	13 (9)	48 (43)
Moderately	0	0	0	4 (4)	4 (4)
Greatly	0	0	1 (1)	0	1 (1)
All options	21	34	34	22	111^a

Values in parentheses are those for the group excluding patients who had undergone further operations on the knee. Pain - in the whole group, expectations were met in 44% of patients (values in italics), were not met in 53% (values marked bold), and were exceeded in 3%. Function - in the whole group, expectations were met in 25% of patients (values in italics), were not met in 70% (values marked bold), and were exceeded in 5%. ^aOne patient had missing data preoperatively, hence n = 111(98).

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