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Background  This study presents patient-reported outcome measures after combined matrix-associated autologous chondrocyte implantation and autologous bone grafting in high-stage osteochondral lesions of the talus in adolescents.    Methods  A total of 12 adolescent patients (13 ankles) received matrix-associated autologous chondrocyte implantation and autologous bone grafting for a solitary osteochondral lesion of the talus at a single centre. The Foot and Ankle Outcome Score and Foot and Ankle Ability Measure were defined as outcome measures (median follow-up 80 months [range 22–107 months]). Pre- and postoperative ankle radiographs were evaluated according to the van Dijk ankle osteoarthritis scale.    Results  The study population consisted of four male and nine female cases (mean age at the time of surgery, 17.7 ± 2.1 years). Eight lesions were classified as traumatic and five as idiopathic .  Twelve lesions were located medial vs one lateral in the coronal plane and all central in the sagittal plane. The median lesion size and depth were 1.3 cm 2  (range 0.9–3.2 cm 2 ) and 5 mm (range 5–9 mm), respectively.  There were no perioperative complications in any of the cases.  In 9 cases patient-reported outcome measures were available. The results of the Foot and Ankle Outcome Score subscales were  symptoms , 70 ± 14;  pain , 83 ± 10;  activities of daily living , 89 ± 12;  sports/recreational activities , 66 ± 26; and  quality of life , 51 ± 17. The mean overall Foot and Ankle Outcome Score was 78 ± 13.  The results of the Foot and Ankle Ability Measure subscales were  activities of daily living , 81 ± 20;  function/activities of daily living , 84 ± 13;  sports , 65 ± 29; and  function/sports , 73 ± 27. According to the  function overall  subscale of the Foot and Ankle Ability Measure, in two cases, the patients assessed the ankle function as normal, in three as nearly normal, and in three as abnormal (missing data,  n  = 1).  Preoperative van Dijk scale: stage 0 in five cases and stage I in eight cases; postoperative van Dijk scale: stage 0 in four cases, stage I in 9 cases    Conclusions  Patient-reported outcome measures following matrix-associated autologous chondrocyte implantation and autologous bone grafting for high-stage osteochondral lesions of the talus in adolescents show heterogeneous results. Long-term limitations mainly affect sports and recreational activities. Osteochondral lesions of the talus are associated with osteoarthritis, even preoperatively. However, we did not find significant osteoarthritis progression after matrix-associated autologous chondrocyte implantation and autologous bone grafting in the long term.

journal of orthopaedic surgery and research

Matrix-associated autologous chondrocyte implantation with autologous bone grafting of osteochondral lesions of the talus in adolescents: patient-reported outcomes with a median follow-up of 6 years