Table 7.

Pre- and Postoperative PROMs in the Nonsubstantial Group and the Substantial Improvement Group.

PROM	Nonsubstantial (n = 34)	Substantial Improvement (n = 56)	P
KOOS
Pain
Pre	55.9 ± 21.9	67.3 ± 17.7	0.0225
Post	69.4 ± 16.7	91.6 ± 9.1	<0.001
Mean score change	13.2 ± 18.0	24.4 ± 15.8	0.0045
Symptom
Pre	41.7 ± 16.5	50.6 ± 18.1	0.0119
Post	42.9 ± 14.4	58.1 ± 10.7	<0.001
Mean score change	1.2 ± 15.3	7.1 ± 19.1	0.1841
ADL
Pre	69.3 ± 19.9	75.8 ± 17.5	0.1533
Post	80.1 ± 16.0	95.0 ± 8.5	<0.001
Mean score change	11.7 ± 17.9	19.7 ± 15.5	0.0321
Sport/Recreation
Pre	29.5 ± 23.1	33.4 ± 21.8	0.5345
Post	39.9 ± 22.1	74.2 ± 17.9	< 0.001
Mean score change	10.1 ± 22.5	41.2 ± 24.4	< 0.001
QOL
Pre	25.0 ± 20.4	31.1 ± 20.1	0.1344
Post	40.1 ± 18.0	70.0 ± 18.2	<0.001
Mean score change	15.1 ± 18.0	39.1 ± 23.0	<0.001
IKDC
Pre	38.9 ± 18.8	45.7 ± 17.7	0.1000
Post	50.7 ± 17.5	80.1 ± 13.5	<0.001
Mean score change	11.7 ± 16.4	34.2 ± 18.5	<0.001
Lysholm
Pre	51.2 ± 21.8	59.0 ± 20.3	0.0901
Post	61.7 ± 20.0	85.9 ± 10.3	<0.001
Mean score change	11.2 ± 20.6	27.2 ± 19.4	0.0013
SF-12
PCS
Pre	36.6 ± 9.5	42.3 ± 9.3	0.0054
Post	42.7 ± 8.6	53.7 ± 4.6	<0.001
Mean score change	6.0 ± 8.4	12.0 ± 9.9	0.0020
MCS
Pre	49.0 ± 9.1	52.5 ± 9.2	0.0696
Post	53.9 ± 7.6	54.8 ± 7.0	0.3620
Mean score change	4.9 ± 8.8	2.7 ± 9.0	0.3988

PROMs, patient-reported outcome measures; KOOS, Knee Injury and Osteoarthritis Outcome Score; ADL, activities of daily living; QOL, quality of life; IKDC, International Knee Documentation Committee Subjective Knee Evaluation Form; SF-12, Short Form 12; PCS, Physical Component Summary; MCS, Mental Component Summary.

^aValues are shown as mean ± standard deviation.