Chen H, et al. - A systematic search of the literature was performed to compare PT autografts with 4-strand semitendinosus and gracilis (STG) autografts concerning knee stability, functional outcomes as well as complications after anterior cruciate ligament (ACL) reconstruction at minimal follow-up of 5 years. This study was carried out to search PubMed, Embase, and the Cochrane Library to distinguish published prospective randomized controlled trials on clinical studies comparing PT autograft and 4-strand STG autografts for ACL reconstruction. Research included nine clinical studies including a total of 630 patients (313 PT and 317 STG autografts). The outcomes of this study demonstrate that except for significantly higher risk of anterior knee pain, PT autograft had comparable outcomes with 4-strand STG autograft in terms of knee stability and functional outcomes after ACL reconstruction with mid- to long-term follow-up. No statistically significant difference was noted in loss of ROM, kneeling pain, graft re-rupture rate, revision rate, and OA change, but these outcomes were underpowered.