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The Bone & Joint Journal
Dates
Year From

Year To
The Bone & Joint Journal
Vol. 105-B, Issue 8 | Pages 880 - 887
1 Aug 2023
Onodera T Momma D Matsuoka M Kondo E Suzuki K Inoue M Higano M Iwasaki N

Aims

Implantation of ultra-purified alginate (UPAL) gel is safe and effective in animal osteochondral defect models. This study aimed to examine the applicability of UPAL gel implantation to acellular therapy in humans with cartilage injury.

Methods

A total of 12 patients (12 knees) with symptomatic, post-traumatic, full-thickness cartilage lesions (1.0 to 4.0 cm2) were included in this study. UPAL gel was implanted into chondral defects after performing bone marrow stimulation technique, and assessed for up to three years postoperatively. The primary outcomes were the feasibility and safety of the procedure. The secondary outcomes were self-assessed clinical scores, arthroscopic scores, tissue biopsies, and MRI-based estimations.