Table 2.

Technique Advantages and Disadvantages

Advantages 1.Incorporates biomechanically proven fixation constructs, including cortical button suspensory fixation and suture anchors.8,9 2.Allows for precise titration of patellar tendon length and Caton–Deschamps index (CDI) through use of a docked allograft tendon. 3.May be used in the presence of patellar tendon tissue loss. 4.The adjustable loop suspensory fixation allows for excellent tensioning of the allograft to prevent extensor lag.

Disadvantages 1.Insufficient preoperative planning and inadequate attention to the contralateral patellar tendon length and patellar height may lead to improper patellar tendon length, improper patellar height, and inability to tension the graft via the adjustable loops due to “bottoming out” in the bone sockets. 2.Dissection around the posterior tibia is required to appropriately place a posterior tibial retractor for protection of neurovascular structures while drilling.