Unestable knee osteochondritis dissecans: arthroscopic fixation with bio-absorbable device

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Biomaterials Engineering

Background:

• Osteochondritis dissecans (OCD) of the knee is a challenging osteochondral disease with debated treatment options.
• This study focuses on OCD, specifically stage III lesions, evaluating a novel treatment approach.

Purpose of the Study:

• To analyze the outcomes of patients treated with bioabsorbable nails for knee osteochondritis dissecans.
• To assess the efficacy and reproducibility of arthroscopic bioabsorbable nail fixation for unstable OCD lesions.

Main Methods:

• A cohort of 9 patients (10 knees) with stage III osteochondral lesions underwent arthroscopic surgery with bioabsorbable nail fixation.
• Follow-up included clinical evaluation using KOOS and IKDC questionnaires, patient satisfaction, and MRI assessment after a minimum of 12 months.

Main Results:

• 80% of patients achieved bone healing within the first year, with 20% experiencing delayed union.
• Significant improvements were observed in IKDC (29.5 points) and KOOS subscales (pain, function, quality of life).
• Arthroscopic evaluation revealed 40% of initially stable lesions were unsta ble, necessitating internal fixation with bioabsorbable nails.

Conclusions:

• Bioabsorbable nail fixation is a valid and reproducible surgical option for unstable knee OCD lesions with preserved integrity.
• The procedure leads to substantial improvements in functional outcomes, quality of life, and demonstrates a low complication rate.