Poster 338: Analysis of Patient Reported Outcomes and Subsequent Surgery Rate following Quadriceps Tendon Anterior Cruciate Ligament Reconstruction and Lateral Extra-articular Tenodesis in Skeletally Immature Patients: Two Year Follow-Up

Objectives: The incidence of anterior cruciate ligament reconstruction (ACLR) in pediatric and adolescent patients is increasing significantly and many patients possess risk factors that predispose to ACL re-tear. Lateral extra-articular tenodesis (LET) may be performed in conjunction with ACLR to reduce the risk of ACL re-tear. The purpose of this study is to evaluate the 2-year clinical outcomes of ACLR with soft tissue quadriceps tendon (QUAD) autograft and a lateral extra-articular tenodesis (LET) using a modified Lemaire technique in skeletally immature patients. Methods: A consecutive series of patients who underwent QUAD tendon autograft ACLR and LET with a minimum of 2-year follow-up data was analyzed retrospectively. ACLR techniques included all- epiphyseal (AE) and complete transphyseal (CT) and were indicated based on skeletal age. Outcome measures included participants’ return to sports (RTS), concomitant or subsequent surgical procedures and multiple patient-reported outcome measures, including Single Assessment Numeric Evaluation (SANE), Pediatric International Knee Documentation Committee (Pedi-IKDC) and HSS Functional Activity Brief Scale (HSS Pedi-FABS) scores. Results: The final cohort included 50 consecutive adolescent patients aged 11 to 16 years (mean 14.2 ± 1 years) with a minimum follow-up of 2 years. Two patients were lost to follow-up. Of the patients included in the study (n=48), 98% participated in high-risk competitive sports (Table 1). Two patients (4%) were revision ACLR. Ten (21%) patients underwent AE and 38 (79%) underwent CT ACLR. Sixteen patients (33%) had subsequent surgical procedures, including 5 contralateral ACLR, 4 meniscus surgeries, 4 QUAD autograft scar revision, 4 irrigation and debridement (2 patients, 2 each) and 3 hardware removal procedures (2 for hemi-epiphysiodesis and 1 tibial socket button removal). The rate of graft failure was 0%. At two-year follow-up, mean SANE score was 93, mean Pedi-IKDC score was 90, and mean HSS-Pedi-FABS score was 23. RTS rate was 100%. Conclusions: A LET when performing an ACLR is safe and should be considered as a concomitant procedure for adolescent patients that are at high risk of re-tear. [Table: see text]