Isolated Lateral Extra-articular Tenodesis for ongoing instability following Anterior Cruciate Ligament (ACL) reconstruction with an intact graft is effective and has low surgical morbidity.

Abstract

Purpose The management of persisting instability following anterior cruciate ligament reconstruction (ACLR) includes isolated lateral extra articular tenodesis (LEAT). The present study investigates the outcomes following isolated LEAT to address ongoing instability following ACLR without LEAT. Materials and Methods Patients with ongoing symptomatic instability following ACLR with a radiologically intact and well positioned graft who underwent an isolated LEAT between January 2017 and March 2022 were retrospectively recruited. Patients completed patient reported outcome measures (PROMs) at baseline and mean 26 months post operatively. Results Twelve knees in 11 patients underwent an isolated LEAT. All KOOS domains improved significantly between pre and post operative measurements (Pain 60.9 to 91.7, p=0.002; Symptoms 62.5 to 93.8 p=0.003; ADLs 64.3 to 95.2, p=0.002; Sport 61.9 to 82.5, p=0.012; QOL 17.2 to 80.2, p=0.002). One patient required revision ACL surgery 19 months following their subsequent LEAT procedure. Conclusions An isolated LEAT demonstrated clinically significant improvements in patient function and activity with acceptable surgical morbidity and should be considered as an option for appropriate cases with instability despite an intact ACL graft.