“…It is also common for the QF to be weakened following ACL ruptures and reconstructions, and atrophy of the VM and VI often accompanies such weakening (Kuenze, Blemker, & Hart, 2016;Thomas, Wojtys, Brandon, & Palmieri-Smith, 2016;Waligora et al, 2009). QF allografts may be used during reconstruction of the posterior cruciate ligament (PCL) (Kang et al, 2019;Slone, Romine, Premkumar, & Xerogeanes, 2015;Waugh et al, 2019), anterior cruciate ligament (ACL) (Chen, Chen, & Shih, 1999;Kwak, Lee, Lee, & Han, 2018;Xerogeanes, 2019), medial palletofemoral ligament (MPFL) (Fink, Steensen, Gföller, & Lawton, 2018;Steensen, Dopirak, & Maurus, 2005), or fibular collateral ligament (FCL) (Kennedy et al, 2019). Alternatively, such reconstructions can also be performed with the hamstring tendon from the pes anserinus .…”