Poster 331: ACL Graft Tear or Contralateral ACL Tear: Which is Worse???

Objectives: Anterior cruciate ligament (ACL) graft tears and contralateral ACL are both relatively common following primary reconstruction (ACLR). While some prior studies have combined these injuries as an outcome variable (“subsequent injury”), there is little work comparing the outcomes of injuries. We hypothesize that patient reported measures (PROMs) activity level lower revision ACLR than ACLR. Methods: From a prospective cohort study 2333 patients who underwent primary, unilateral ACLR, 298 were identified or within 5 years Following exclusion 11 had injuries, 256 eligible for inclusion, including 124 132 Patients contacted follow-up at 6 after PROMs collected subjective International Knee Documentation Committee (IKDC) score, Osteoarthritis pain (KOOS-Pain) knee-related quality life (KOOS- QOL) subscales, Marx level. Patient demographic initial injury factors, surgical compared between groups. Multiple regression models used to determine whether side subsequent surgery (revision versus ACLR) was significant predictor outcome. Results: Two hundred trenty-three (87%) completed The median time from second in group (1.3 years) (2.0 years, p < 0.001). also demonstrated incidence partial lateral meniscectomy more likely received allograft There no differences age, sex, smoking status, pre- operative knee laxity, articular cartilage status medial meniscus sport, pre-operative two At follow-up, (Table 1). When controlling above 7.8 point IKDC (p<0.001), 3.2 KOOS-pain (p=0.012), 10.4 KOOS-QOL 2.0 score (p=0.002) group. Conclusions: undergo R demonstrate with poorer those [Table: see text]