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Table 3 The safety angle of different morphology patellar

From: Medial patellofemoral ligament reconstruction using a bone groove and a suture anchor at patellar: a safe and firm fixation technique and 3-year follow-up study

   Male Female P value
Type I Case 13 16  
Safety angle 45.32 ± 1.76 41.20 ± 1.33 0.01
Type 2 Case 27 38  
Safety angle 69.74 ± 1.38 63.66 ± 1.45 0.02
Type 3 Case 10 13  
Safety angle 84.11 ± 1.67 80.26 ± 1.73 <0.01