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Table 3 Comparison of the incidence of patellar tendon injury in Rigidfix system

From: Safety of the application of Rigidfix cross-pin system via different tibial tunnels for tibial fixation during anterior cruciate ligament reconstruction

Group Angle Patellar tendon injury χ2 P
Yes No Incidence
A 0 0 4 0.0% 0.120 0.729
30 2 3 40.0%
60 4 1 80.0%
Subtotal 6 8 42.9%
B 35–45 0 5 0.0%
60 3 2 60%
Subtotal 3 7 30%
Total 9 15 37.5%