[Retracted] Effect of Rehabilitation Training Based on Automatic Extraction Algorithm on Knee Anterior Cruciate Ligament Injury Caused by Exercise

Table 4

Comparison of knee flexion and extension activity between two groups ().

Group		Preoperative	After surgery
			January	Mar.	December
Observation group	42
Control group	39	°

Note: Compared with the control group at different time after operation, .