“…There is, however, concern that the use of the central third of the tendon can lead to fracture of the patella, tendon rupture, tendonitis, infrapatellar contracture and loss of movement [27], residual quadriceps weakness and anterior knee pain [5,18,19,21,23]. These problems led to the use of allografts which have the mechanical advantages of an autograft, but need less operative time, produce a satisfactory cosmetic result and avoid the complications of taking the autograft [13].…”