Satisfactory long-term MRI after autologous chondrocyte implantation at the knee

• Published in: Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA Vol. 22; no. 9; pp. 2007 - 2012
• Main Authors: Pelissier, A., Boyer, P., Boussetta, Y., Bierry, G., Van Hille, W., Hamon, P., Jaeger, J. H., Massin, P.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.09.2014; Springer Nature B.V
• Subjects: Adult; Arthritis; Cartilage; Cartilage, Articular - injuries; Cartilage, Articular - surgery; Chondrocytes - transplantation; College football; Daucus; Female; Femur - injuries; Humans; Knee; Knee Joint - surgery; Magnetic Resonance Imaging; Male; Medicine; Medicine & Public Health; Orthopedics; Osteoarthritis; Patients; Transplantation, Autologous; Treatment Outcome; Young Adult; France; MRI outcomes; Cartilage repair; Focal cartilage lesion; Autologous chondrocyte implantation
• ISSN: 0942-2056; 1433-7347
• DOI: 10.1007/s00167-013-2428-9

Purpose Autologous chondrocyte implantation (ACI) to address isolated condylar lesions is supposed to limit degenerative deterioration in neutrally aligned knees. Here, we report long-term results of the first-generation ACI technique with periosteal flap. Methods Twelve patients, 29 years old on average, were included on the basis of pre-operative MRI selection of lesions >2 cm 2 . Cartilage carrots were harvested arthroscopically, then cultured and finally re-implanted within a mean time interval of 12 weeks. Ten-year MRI results were analysed according to a semi-quantitative scale, along with functional assessment based on International Knee Documentation Committee score, Lysholm et al. score and the Tegner et al. activity scale. Results One patient secondarily required valgus tibial osteotomy with mosaic plasty. Another incurred graft hypertrophy that necessitated arthroscopic peeling. MRI showed that cartilage repair filled more than 50 % of the initial defect in 9 patients. Standard radiographs revealed slight narrowing of the joint line. Overall, functional scores improved durably by 50 %, although activity level decreased substantially. Conclusion ACI contained degenerative changes within moderate stages while maintaining durable functional improvement. However, in the absence of controls, it was difficult to differentiate between these findings and the spontaneous evolution of non-treated lesions. Level of evidence Case series, Level IV.