Cartilage Restoration in the Adolescent Knee: a Systematic Review.

Area of Science:

• Orthopedics
• Sports Medicine
• Regenerative Medicine

Background:

• Cartilage defects in the adolescent knee are common and can lead to long-term disability.
• Various surgical techniques exist for cartilage restoration, but their efficacy in adolescents requires further evaluation.

Purpose of the Study:

• To systematically review and assess the outcomes and complications of cartilage restoration techniques for adolescent knee cartilage defects (grades I-IV).

Main Methods:

• A systematic review of eleven studies involving 307 adolescent patients (mean age 15.4 years) with knee cartilage defects.
• Included techniques were autologous chondrocyte implantation (ACI), microfracture (MFx), internal fixation, osteochondral allograft (OCA) transplantation, and cartilage and excision.
• Follow-up ranged from 1 to 18.9 years (mean 4.6 years).

Main Results:

• ACI, MFx, OCA transplantation, and internal fixation demonstrated significant improvements in knee functionality scores.
• The overall complication rate across all techniques was 10.6%.
• OCA transplantation exhibited the highest complication rate (26.9%), while ACI was the most frequently used technique.

Conclusions:

• Autologous chondrocyte implantation (ACI), microfracture (MFx), osteochondral allograft (OCA) transplantation, and internal fixation appear promising for treating adolescent knee cartilage defects.
• These techniques offer positive postoperative functional outcomes and relatively low complication rates.
• Further research with larger sample sizes, standardized outcome measures, and long-term follow-up is necessary to validate these findings.