Staples for ACL graft fixation are made of cobalt chrome with two sharp leg spikes for easier penetration into the bone without predrilling.
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CLINICAL PUBLICATIONS
Tibial fixation in anterior cruciate ligament reconstruction. Teo WW, Yeoh CS and Wee TH. J Orthop Surg (Hong Kong). 2017 Jan;25(1):2309499017699743. doi: 10.1177/2309499017699743.