Brinkman, Joseph C.

Objectives: To compare ACL reconstruction with quadriceps autograft with or without LET for primary ACL reconstruction Methods: A retrospective study was performed from 2013- 2021 including patient undergoing quadriceps autograft (QA) or QA plus lateral extra-articular tenodesis (LET) for primary ACLR. Exclusion criteria included patients undergoing multi-ligamentous reconstruction, concomitant procedures outside of meniscal work, revision cases, and patients with less than 2 years of follow up. The surgeon favored LET in young (less than 18 years old) females participating in cutting and twisting sports. An additional relative indication was a high-grade pivot shift (2 or 3+). Clincal outcomes incldued IKDC and Lysholm scores, retrun to sport/return to sport at same level and time to return to sport in athletes along with complication rates. Failure rate was determined by rate of graft re-tearing and presence of a residual pivot shift (2+ or higher) at final follow up. Results: A total of 142 patients underwent QA+LET with 18 excluded, leaving 124 patients in this group. The QA group had 371 patients with 57 excluded, leaving 314 for analysis. The QA+LET group had a significantly higher percentage of females, ligamentous laxity, and athletes. IKDC scores were significantly higher in the QA+LET group at final follow up. Lysholm scores were significantly higher in the QA group at 6 months, with no difference at other time points. Graft re-tear rates were similar between the 2 groups. Residual pivot shift at final follow up was significantly higher in the QA group (21% vs. 11%, p = 0.012) as was overall failure rate (24% vs. 14.5%. p = 0.026). Return to sport was similar between the 2 groups, but time to return to sport and return at the same or higher level was significantly higher in the QA+LET group. Hematomas were more common (12.9% vs. 0%) in the QA+LET group. Conclusions: Addition of an LET to QA leads to lower residual pivot shift when compared to QA alone. The addition of a LET to QA may lead to a higher return to sport at same or higher level compared to QA alone. This provides preliminary data that will be built upon with results from the Stability 2 trial.