Analysis of the clinical efficacy of two-stage revision surgery in the treatment of periprosthetic joint infection in the knee: A retrospective study

Table 3 Comparison of preoperative and final follow-up knee pain visual analogue scale scores, hospital for special surgery scores, and range of motion results

Indicators	Preoperative exclusion	Final follow-up	T value	P values
VAS (score)	4.0 ± 0.8	1.1 ± 0.7	18.028	< 0.001
HSS (score)	57.9 ± 9.4	82.3 ± 7.1	-21.813	< 0.001
ROM (°)	91.9 ± 26.9	108.0 ± 19.7	-7.148	< 0.001

Data are presented as mean ± SD. P < 0.05 indicates statistical significance. VAS: Visual analogue scale; HSS: hospital for special surgery; ROM: Range of motion.