Allograft ACL Reconstruction in Patients Under 25 Years of Age


      The purpose of this study was to evaluate the outcome of patients under the age of 25 that had ACL reconstructions with allograft tissue.


      During the course of 3 years, the lead author reconstructed 52 ACLs with fresh-frozen, non-irradiated tibialis or Achilles tendon allografts in active patients under the age of 25. Evaluation included IKDC objective and subjective forms, KT-1000 measurement, and Lysholm scores.


      Forty-two patients were available for follow-up with 35 both objective and subjective results, and 7 subjective only. The average age at the time of surgery was 17 years 7 months (range 11 yrs 10 mths-24 yrs 8 mths). Thirty were female and 12 male. Tibialis grafts were used in 26 patients and Achilles grafts in 16. Isolated ACL recostructions were performed in 24 cases with 13 also having meniscus repairs and 5 partial meniscectomies. The average follow-up was 64 months (range 34-86 mths). The IKDC objective ratings were A-29, B-5, and D-1. KT-1000 scores were 0mm-3; 1mm-22 ; 2mm-8; 3mm-1; and >5mm-1. The IKDC subjective score average was 90.2 +/- 14.8. The Lysholm score average was 91.0 +/- 11.0. The one failure was a tibialis graft that tore at 13 months post-op.


      Allografts are not typically used for ACL reconstructions in active, young patients because of a concern for a higher failure rate compared to autografts. The results of our study found using non-irradiated tibialis or Achilles tendon allografts for ACL reconstructions in active patients under 25 years of age can have good outcomes with a low rate of failure.