Observational Study
Copyright ©The Author(s) 2024.
World J Orthop. May 18, 2024; 15(5): 444-456
Published online May 18, 2024. doi: 10.5312/wjo.v15.i5.444
Table 3 Within-group comparison of preoperative vs postoperative patient reported outcome measures scores
UKA Group
HTO Group

Pre-op mean (SD)
Post-op mean (SD)
P value1
95%CI
Pre-op
mean (SD)
Post-op mean (SD)
P value1
95%CI
KOOS:
Pain32.5 (8.2)91.1 (12.7)< 0.001a51.8 to 63.335.2 (17.7)87.2
(12.4)		< 0.001a37.5 to 63.0
Symptoms42.3 (17.8)87.0 (12.9)< 0.001a37.3 to 52.138.2 (17.8)73.0
(17.3)		< 0.001a25.7 to 49.5
ADLs38.0 (9.1)90.6 (13.9)< 0.001a47.6 to 57.142.2 (17.3)90.2
(10.8)		< 0.001a32.9 to 53.9
Sport/Rec19.0 (21.3)78.7 (28.9)< 0.001a44.9 to 76.514.4 (12.4)71.8
(27.6)		< 0.001a39.7 to 71.2
QoL17.8 (11.9)80.1 (21.8)< 0.001a53.9 to 71.613.0 (11.9)67.8
(14.8)		< 0.001a40.9 to 62.6
Overall29.1 (7.9)85.2 (17.3)<0.001a47.8 to 63.627.1 (13.1)78.4
(13.6)		< 0.001a37.7 to 58.1
OKS16.5 (5.6)42.4
(6.3)		< 0.001a23.0 to 28.618.4 (7.8)42.1
(5.2)		< 0.001a16.4 to 27.8
EQ-5DIndex35.6 (24.0)84.7 (18.8)< 0.001a38.8 to 57.237.4 (29.7)80.8 (15.11)< 0.001a23.8 to 48.9
EQ-5DVAS72.4 (17.6)88.3 (12.7)< 0.001a8.6 to 23.064.8 (23.4)82.9
(9.6)		0.069-1.2 to 27.0
SF-12 PCS 28.9 (5.8)50.9
(7.7)		< 0.001a16.3 to 25.432.1 (7.7)50.0
(8.9)		0.001a9.1 to 25.8
SF-12 MCS51.0 (11.4)51.8
(9.7)		0.476-3.0 to 6.242.9 (13.0)50.8
(10.5)		0.115-1.8 to 14.1
1Paired Student’s t-test.
aP < 0.05, statistically significant.
SD: Standard deviation; UKA: Unicompartmental knee arthroplasty; HTO: High tibial osteotomy; Pre-op: Preoperative; Post-op: Postoperative; PROM: Patient reported outcome measures; KOOS: Knee Injury and osteoarthritis outcome score; ADL: Activities of daily living; Sport/Rec: Sport & recreation; QoL: Quality of life; OKS: Oxford knee score; EQ-5Dindex: EuroQol–5 dimension descriptive component; EQ-5Dvas: EuroQol–5 dimension visual analogue scale; SF-12 PCS: 12 item Short Form survey physical component score; SF-12 MCS: 12 item Short Form survey mental component score.