Results of arthroscopic suspension fixation for acute posterior cruciate ligament avulsion fractures in adolescents: a retrospective cohort study.

BACKGROUND

This study aimed to evaluate the clinical efficacy of arthroscopic suspension fixation in the treatment of acute posterior cruciate ligament (PCL) avulsion fractures in adolescents.

MATERIALS AND

METHODS

We retrospectively analyzed the clinical data of adolescent patients with PCL tibial avulsion fractures who underwent arthroscopic suspension fixation between May 2013 and November 2022. All the patients underwent arthroscopic suspension fixation. Clinical and functional outcomes were evaluated using the Lysholm score, the 2000 International Knee Documentation Committee (IKDC) subjective score, and the IKDC examination form. The follow-up period for all patients was at least 2 years, with an average of 29.8 months. At the final follow-up, differences in leg length between the lower limbs were measured and assessed.

RESULTS

All patients met the study criteria and completed at least 2 years of follow-up, averaging 29.8 months. The mean age was 15.4 years (range, 12-18 years). The mean Lysholm score increased from 21.55 ± 7.18 preoperatively to 95.25 ± 2.17. The mean 2000 IKDC subjective score improved from 18.25 ± 5.49 to 94.9 ± 2.43, and knee range of motion improved from 39.25° ± 6.71° to 136.5° ± 4.12°. The IKDC examination grade also improved significantly, with no bilateral limb length differences exceeding 1 cm at the final follow-up, and no patient reported any noticeable limb length discrepancies.

CONCLUSION

This suspensory arthroscopic technique is a minimally invasive and safe treatment for PCL tibial avulsion fractures in adolescents. Suspensory fixation results in satisfactory outcomes and achieves effective knee stability and fracture union.

LEVEL OF EVIDENCE: IV, therapeutic study.