BACKGROUND: The healing potential of damaged articular cartilage is limited. The NeoCart is a tissue-engineered collagen matrix seeded with autogenous chondrocytes designed for the repair of hyaline articular cartilage. HYPOTHESIS: The NeoCart implant is well tolerated in the human knee. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Eight patients (treatment group) with full-thickness cartilage injury were treated with the NeoCart and evaluated prospectively. Autogenous chondrocytes provided by arthroscopic biopsy were seeded into a 3-dimensional type I collagen scaffold. The seeded scaffold was subjected to a tissue-engineering protocol including treatment with a bioreactor. Implantation of the prepared cartilage tissue patch was performed via miniarthrotomy and secured with a collagen bioadhesive. Evaluations through 24 months postoperatively included the subjective International Knee Documentation Committee questionnaire, visual analog scale, range of motion, and cartilage-sensitive magnetic resonance imaging (MRI), including quantitative T2 mapping. RESULTS: Pain scores after NeoCart implantation were significantly lower than baseline at 12 and 24 months after the procedure (P < .05). Improved function and motion were also noted at 24 months. Six patients had 67% to 100% defect fill at 24 months with MRI evaluation. One patient had moderate (33%-66%) defect fill, and another patient had poor (less than 33%) defect fill. Partial stratification of T2 values was observed for 2 patients at 12 months and 4 patients at 24 months. No patients experienced arthrofibrosis or implant hypertrophy. CONCLUSION: Pain was significantly reduced 12 and 24 months after NeoCart treatment. Trends toward improved function and motion were observed 24 months after implantation. The MRI indicated implant stability and peripheral integration, defect fill without overgrowth, progressive maturation, and more organized cartilage formation.
BACKGROUND: The healing potential of damaged articular cartilage is limited. The NeoCart is a tissue-engineered collagen matrix seeded with autogenous chondrocytes designed for the repair of hyaline articular cartilage. HYPOTHESIS: The NeoCart implant is well tolerated in the human knee. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Eight patients (treatment group) with full-thickness cartilage injury were treated with the NeoCart and evaluated prospectively. Autogenous chondrocytes provided by arthroscopic biopsy were seeded into a 3-dimensional type I collagen scaffold. The seeded scaffold was subjected to a tissue-engineering protocol including treatment with a bioreactor. Implantation of the prepared cartilage tissue patch was performed via miniarthrotomy and secured with a collagen bioadhesive. Evaluations through 24 months postoperatively included the subjective International Knee Documentation Committee questionnaire, visual analog scale, range of motion, and cartilage-sensitive magnetic resonance imaging (MRI), including quantitative T2 mapping. RESULTS:Pain scores after NeoCart implantation were significantly lower than baseline at 12 and 24 months after the procedure (P < .05). Improved function and motion were also noted at 24 months. Six patients had 67% to 100% defect fill at 24 months with MRI evaluation. One patient had moderate (33%-66%) defect fill, and another patient had poor (less than 33%) defect fill. Partial stratification of T2 values was observed for 2 patients at 12 months and 4 patients at 24 months. No patients experienced arthrofibrosis or implant hypertrophy. CONCLUSION:Pain was significantly reduced 12 and 24 months after NeoCart treatment. Trends toward improved function and motion were observed 24 months after implantation. The MRI indicated implant stability and peripheral integration, defect fill without overgrowth, progressive maturation, and more organized cartilage formation.
Authors: Alvin K Shieh; Sohni G Singh; Connor Nathe; Evan Lian; Dominik R Haudenschild; Jan A Nolta; Cassandra A Lee; Eric Giza; Christopher D Kreulen Journal: Cartilage Date: 2018-08-29 Impact factor: 4.634
Authors: Cheng Zhe Jin; Jae-Ho Cho; Byung Hyune Choi; Li Ming Wang; Moon Suk Kim; So Ra Park; Jeong Ho Yoon; Jung Ho Yun; Hyun Ju Oh; Byoung-Hyun Min Journal: Tissue Eng Part A Date: 2011-10-17 Impact factor: 3.845
Authors: Eleftherios A Makris; Andreas H Gomoll; Konstantinos N Malizos; Jerry C Hu; Kyriacos A Athanasiou Journal: Nat Rev Rheumatol Date: 2014-09-23 Impact factor: 20.543
Authors: Heenam Kwon; Wendy E Brown; Cassandra A Lee; Dean Wang; Nikolaos Paschos; Jerry C Hu; Kyriacos A Athanasiou Journal: Nat Rev Rheumatol Date: 2019-07-11 Impact factor: 20.543
Authors: Ning Wang; Sibylle Grad; Martin J Stoddart; Philipp Niemeyer; Kilian Reising; Hagen Schmal; Norbert P Südkamp; Mauro Alini; Gian M Salzmann Journal: Int Orthop Date: 2013-11-28 Impact factor: 3.075
Authors: Kevin R Stone; Jonathan R Pelsis; Kellen Na; Ann W Walgenbach; Thomas J Turek Journal: Knee Surg Sports Traumatol Arthrosc Date: 2016-10-01 Impact factor: 4.342