2021 ISAKOS Biennial Congress ePoster
Clinical Evaluation Of a Resurfacing Device Biopoly™ Implant For Femoral Osteochondral Defect Greater Than 1 Cm2 At Minimal 2 Years Follow-Up. A Prospective Cohort Study.
François-Paul Ehkirch, MD, Paris FRANCE
Elliott Kierszbaumb, MD, Paris FRANCE
Pierre-Alban Bouché, MD, Paris FRANCE
Clinique Maussins-Nollet, Paris, FRANCE
FDA Status Not Applicable
Summary
Osteochondral defects have a limited capacity to scare and can evolve to an early osteoarthritis. A surgical possibility is the replacement of the affected cartilaginous area with a resurfacing device. BioPoly ™ RS Partial Resurfacing Knee Implant, a prosthetic button, can have an interesting place in the therapeutic arsenal for the treatment of cartilage lesions larger than 1 cm2 grade 2, 3 or 4
ePosters will be available shortly before Congress
Abstract
Introduction
Osteochondral defects have a limited capacity to scare and can evolve to an early osteoarthritis. A surgical possibility is the replacement of the affected cartilaginous area with a resurfacing device. BioPoly ™ RS Partial Resurfacing Knee Implant, a prosthetic button, can have an interesting place in the therapeutic arsenal for the treatment of cartilage lesions larger than 1 cm2 grade 2, 3 or 4 of the ICRS. The objectives of this study were to report the survival, clinical and radiological outcomes of the BioPoly ™ after a minimal follow up of two years.
Methods
This monocentric retrospective cohort study included all patients who had a BioPoly ™ for femoral osteochondral defects greater than 1cm2 and at least grade 2 ICRS. The Knee injury and Osteoarthritis Outcome Score (KOOS) and and the Tegner activity score were used to assess outcomes preoperatively and at 2 years postoperatively. The secondary outcomes were the visual analog scale (VAS) for pain, the complications rate at six months post-surgery and survival rate of BioPoly ™ at the last FU.
Results
Nineteen patients (19 patients) were included with a mean age of 45.8 years (11.5), a mean body mass index (BMI) of 21.3 (Kg/m2) (2.4) and 42.1% (8/19) of patients were women. The mean follow-up was 4.0 years (1.5). We found a significant difference comparing pre-operative KOOS score and at last follow-up (respectively, 66.4(14.0) vs 82.2(10.7), p<0.01). At last follow up, the Tegner score was not difference at pre-operatively (difference Last FU-preoperatively =0.3(1.8)). At five years, the survival rate was of 94.7%. We observed only one complication (5%), an aseptic failure.
Conclusion
BioPoly ™ RS Partial Resurfacing Knee Implant, regarding our results, is a real alternative for femoral osteochondral defects greater than 1cm2 and at least grade 2 ICRS. It allows to recover the same sport level. It will be interesting to compare this implant to mosaicplasty technic and/or microfracture at five years postoperatively regarding clinical outcomes and survival rate.