Abstract
Purpose
The treatment approach for a patient with knee joint focal cartilage lesion is a difficult decision. To date, there has been no randomized clinical trial involving Hydrogel (Cartiva™). This study evaluated and compared the results of a hydrogel implant (Cartiva™) with autologous osteochondral transplantation (AOT) for treating knee joint focal cartilage lesions.
Methods
Thirty-eight symptomatic patients, with a focal cartilage lesion of Outerbridge grades III or IV, were randomized into one of two groups according to the inclusion and exclusion criteria. Group I underwent AOT, and Group II was treated with a Hydrogel implant. Patients were evaluated preoperatively and again postoperatively at 6, 12, and 24 months using the subjective International Knee Documentation Committee (IKDC) scores, Visual Analog Scale for Pain (VAS Pain), Activities of Daily Living Scale (ADLS) and Lysholm score.
Results
Both groups showed significant improvements from baseline (pre-surgery) to post-surgery (6, 12, and 24 months; p < 0.05), but there was no difference between the groups. Regarding complications, prolonged pain was observed in four patients (10.5%), two from each group, with a regression of symptoms within 1 year.
Conclusion
The Hydrogel implant showed similar efficiency as the autologous osteochondral graft for treating knee joint focal cartilage lesions. Both techniques showed satisfactory results compared to preoperative status. The Hydrogel implant was safe and effective, and it provided good stability and joint function at 2-year follow-up.
Level of evidence
I.
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Abbreviations
- IKDC:
-
International Knee Documentation Committee
- VAS Pain:
-
Visual Analog Scale for Pain
- ADLS:
-
Activities of Daily Living Scale
- AOT:
-
Autologous osteochondral transplantation
- MRI:
-
Magnetic resonance imaging
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AABQ, PD, JA, MF and MC: conception and design, acquisition of data, statistical analysis and interpretation of data, drafting the manuscript, critical revision for important intellectual content, and final approval of the manuscript to be published and are accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work were appropriately investigated and resolved.
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The study was approved by the research ethics committee of the Federal University of Sao Paulo (under the number: 05874612 00000 5505).
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All patients underwent the free and informed consent term.
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de Queiroz, A.A.B., Debieux, P., Amaro, J. et al. Hydrogel implant is as effective as osteochondral autologous transplantation for treating focal cartilage knee injury in 24 months. Knee Surg Sports Traumatol Arthrosc 26, 2934–2941 (2018). https://doi.org/10.1007/s00167-018-4834-5
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DOI: https://doi.org/10.1007/s00167-018-4834-5