Osteochondral Autologous Transplantation of the Knee in Adolescents: Mid-Term Functional and Radiographic Outcomes
DOI:
https://doi.org/10.63403/re.v33i1.456Keywords:
Osteochondral autologous transplantation, Knee, Adolescents, Osteochondritis dissecans, OutcomesAbstract
Introduction: osteochondral autologous transplantation is a surgical technique for treating osteochondral defects. Evidence regarding its outcomes in pediatric and adolescent patients is limited.
Objectives: The objective of the present study was to evaluate the clinical, radiographic, and magnetic resonance imaging (MRI) outcomes of a consecutive series of patients under 18 years of age treated with autologous osteochondral transplantation.
Materials and methods: data from 30 patients (33 knees) were retrospectively analyzed. Surgical indications, perioperative complications, and outcomes were evaluated: clinical scores included Pedi-IKDC, Lysholm, return to sport, and knee pain; imaging included MRI to determine osteochondral graft integration and radiography to evaluate osteoarthritis (Kellgren-Lawrence).
Results: the mean age was 15.3 ± 2.1 years. The most frequent location was the medial femoral condyle. Between one to three osteochondral grafts were transplanted (average diameter of 8.5 mm). In 17 knees, grafts were used to fill cartilage defects (CD), while in 16 knees, they were used for hybrid internal fixation (HIF) of unstable osteochondritis dissecans. The mean lesion size was 132 mm² for CD and 404.1 mm² for HIF (p <0.0001). The mean follow-up was 20.5 months (range 6-80 months). Return to sport was achieved at a mean of 7.8 ± 2.6 months. The mean MOCART score was 85.2 ± 6.6, no significant differences were found base on lesion location (p = 0.54). Thirty-one knees had a KL grade 1, and two presented grade 2. At the last follow-up, 27 patients were asymptomatic and 3 reported occasional discomfort.
Conclusion: Autologous osteochondral transplantation in patients under 18 years of age was associated with a significant improvement in symptoms and adequate graft integration in all cases.
Level of Evidence: IV. Retrospective cohort study.
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