Table 2.

Analysis of HSS scores of patients ($\overline{x}\pm s$, points).

Time	Function and activity	Strength of joint motion	Muscle strength	Flexion deformity	Stability
T0	11.5 ± 2.2	8.2 ± 1.2	3.0 ± 1.4	1.3 ± 1.0	3.9 ± 1.2
T1	15.6 ± 3.1∗	10.5 ± 3.2∗	5.2 ± 1.6∗	5.9 ± 1.8∗	5.4 ± 1.8∗
T2	18.4 ± 2.8∗	14.6 ± 2.6∗	6.9 ± 2.4∗	7.2 ± 2.1∗	7.8 ± 2.1∗
T3	20.1 ± 3.6∗	16.0 ± 2.4∗	7.9 ± 1.8∗	8.4 ± 2.1∗	8.6 ± 1.6∗
T4	22.1 ± 2.0∗	17.1 ± 1.6∗	9.2 ± 2.0∗	9.3 ± 1.2∗	9.3 ± 0.9∗

^∗ Comparison of the time nodes after surgery with T₀ (P < 0.05).