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Wang X, Ren Z, Liu Y, Ma Y, Huang L, Song W, Lin Q, Zhang Z, Li P, Wei X, Duan W. Characteristics and Clinical Outcomes After Osteochondral Allograft Transplantation for Treating Articular Cartilage Defects: Systematic Review and Single-Arm Meta-analysis of Studies From 2001 to 2020. Orthop J Sports Med 2023; 11:23259671231199418. [PMID: 37745815 PMCID: PMC10515554 DOI: 10.1177/23259671231199418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 05/03/2023] [Indexed: 09/26/2023] Open
Abstract
Background Osteochondral allograft transplantation (OCA) treats symptomatic focal cartilage defects with satisfactory clinical results. Purpose To comprehensively analyze the characteristics and clinical outcomes of OCA for treating articular cartilage defects. Study Design Systematic review; Level of evidence, 4. Methods We searched Embase, PubMed, Cochrane Database, and Web of Science for studies published between January 1, 2001, and December 31, 2020, on OCA for treating articular cartilage defects. Publication information, patient data, osteochondral allograft storage details, and clinical outcomes were extracted to conduct a comprehensive summative analysis. Results In total, 105 studies involving 5952 patients were included. The annual reported number of patients treated with OCA increased from 69 in 2001 to 1065 in 2020, peaking at 1504 cases in 2018. Most studies (90.1%) were performed in the United States. The mean age at surgery was 34.2 years, and 60.8% of patients were male and had a mean body mass index of 26.7 kg/m2. The mean lesion area was 5.05 cm2, the mean follow-up duration was 54.39 months, the mean graft size was 6.85 cm2, and the number of grafts per patient was 54.7. The failure rate after OCA was 18.8%, and 83.1% of patients reported satisfactory results. Allograft survival rates at 2, 5, 10, 15, 20, and 25 years were 94%, 87.9%, 80%, 73%, 55%, and 59.4%, respectively. OCA was mainly performed on the knee (88.9%). The most common diagnosis in the knee was osteochondritis dissecans (37.9%), and the most common defect location was the medial femoral condyle (52%). The most common concomitant procedures were high tibial osteotomy (28.4%) and meniscal allograft transplantation (24.7%). After OCA failure, 54.7% of patients underwent revision with primary total knee arthroplasty. Conclusion The annual reported number of patients who underwent OCA showed a significant upward trend, especially from 2016 to 2020. Patients receiving OCA were predominantly young male adults with a high body mass index. OCA was more established for knee cartilage than an injury at other sites, and its best indication was osteochondritis dissecans. This analysis demonstrated satisfactory long-term postoperative outcomes.
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Affiliation(s)
- Xueding Wang
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, Shanxi, China
| | - Zhiyuan Ren
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, Shanxi, China
| | - Yang Liu
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, Shanxi, China
| | - Yongsheng Ma
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, Shanxi, China
| | - Lingan Huang
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, Shanxi, China
| | - Wenjie Song
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, Shanxi, China
| | - Qitai Lin
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, Shanxi, China
| | - Zhipeng Zhang
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, Shanxi, China
| | - Pengcui Li
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, Shanxi, China
| | - Xiaochun Wei
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, Shanxi, China
| | - Wangping Duan
- Department of Orthopaedics, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, Shanxi, China
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Márquez-Flórez K, Garzón-Alvarado DA, Carda C, Sancho-Tello M. Computational model of articular cartilage regeneration induced by scaffold implantation in vivo. J Theor Biol 2023; 561:111393. [PMID: 36572091 DOI: 10.1016/j.jtbi.2022.111393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/22/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Computational models allow to explain phenomena that cannot be observed through an animal model, such as the strain and stress states which can highly influence regeneration of the tissue. For this purpose, we have developed a simulation tool to determine the mechanical conditions provided by the polymeric scaffold. The computational model considered the articular cartilage, the subchondral bone, and the scaffold. All materials were modeled as poroelastic, and the cartilage had linear-elastic oriented collagen fibers. This model was able to explain the remodeling process that subchondral bone goes through, and how the scaffold allowed the conditions for cartilage regeneration. These results suggest that the use of scaffolds might lead the cartilaginous tissue growth in vivo by providing a better mechanical environment. Moreover, the developed computational model demonstrated to be useful as a tool prior experimental in vivo studies, by predicting the possible outcome of newly proposed treatments allowing to discard approaches that might not bring good results.
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Affiliation(s)
- K Márquez-Flórez
- Department of Mechanical and Mechatronic Engineering, Universidad Nacional de Colombia, Bogotá, Colombia; Numerical Methods and Modeling Research Group (GNUM), Universidad Nacional de Colombia, Bogotá, Colombia; Department of Pathology, Faculty of Medicine and Odontology, Universitat de València, Valencia, Spain
| | - D A Garzón-Alvarado
- Department of Mechanical and Mechatronic Engineering, Universidad Nacional de Colombia, Bogotá, Colombia; Numerical Methods and Modeling Research Group (GNUM), Universidad Nacional de Colombia, Bogotá, Colombia; Instituto de Biotecnología, Universidad Nacional de Colombia.
| | - C Carda
- Department of Pathology, Faculty of Medicine and Odontology, Universitat de València, Valencia, Spain; INCLIVA Biomedical Research Institute, Valencia, Spain; Biomedical Research Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Valencia, Spain
| | - M Sancho-Tello
- Department of Pathology, Faculty of Medicine and Odontology, Universitat de València, Valencia, Spain; INCLIVA Biomedical Research Institute, Valencia, Spain
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Chua YL, Siang Koh DT, Lee KH. Fresh Femoral Osteochondral Allograft Transplantation Using a Single-Plug Technique for Large Osteochondral Defects of the Knee. Arthrosc Tech 2023; 12:e223-e232. [PMID: 36879860 PMCID: PMC9984732 DOI: 10.1016/j.eats.2022.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 10/28/2022] [Indexed: 01/20/2023] Open
Abstract
Osteochondral allograft (OCA) transplantation has been used to treat a wide spectrum of cartilage deficiencies in the knee, including spontaneous necrosis of the knee. Studies reporting outcomes after OCA transplantation have shown reliable improvement in pain and return to activities of daily living. We describe a single-plug, press-fit technique for OCA transplantation with concomitant high tibial osteotomy to treat femoral condyle chondral defects in a varus knee. Pearls and pitfalls of this technique are presented; attention should be paid to correction of concomitant joint pathology and malalignment to facilitate osseointegration and survivorship of the allograft plug into host bone. Appropriate surgical timing and prompt allograft implantation help to maximize chondrocyte viability.
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Affiliation(s)
- Yi Ling Chua
- Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore
| | - Don Thong Siang Koh
- Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore
| | - Kong Hwee Lee
- Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore
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Outcomes of Plug Osteochondral Allograft Transplantation With or Without Concomitant Osteotomy for Cartilage Defects in the Knee: Minimum 2-year Follow-up. J Am Acad Orthop Surg 2023; 31:e73-e81. [PMID: 36580053 DOI: 10.5435/jaaos-d-22-00109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 08/05/2022] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION Isolated osteochondral defects of the knee can cause notable pain and disability. Osteochondral allograft (OCA) transplantation using trephined plug grafts is a highly effective, often curative, treatment option. In knees with malalignment into the transplanted compartment, osteotomy can be done concurrently. This study investigates early-to-midterm survivorship, as well as clinical and radiographic outcomes, of plug OCAs with and without concomitant osteotomy in the knee. METHODS Plug OCA was done on active, young to middle-aged patients with osteochondral defects ≤4 cm diameter. Prospectively collected data for 102 patients who underwent plug OCA between 2004 and 2020 were reviewed. Survivorship according to Kaplan-Meier analysis was the primary outcome. Failure was defined as conversion to total knee arthroplasty or repeat allograft. Clinical and radiographic outcomes were evaluated using the modified Hospital for Special Surgery (mHSS) score and Kellgren-Lawrence grading. RESULTS Eighty-six patients with a mean age of 29 ± 9.7 years (15 to 54) and a mean follow-up of 6.8 ± 3.7 years (2 to 15.9) were studied. Concomitant realignment osteotomy was done in 66 patients (76.7%). Graft survivorship was 100%, 93.8% (95% confidence interval 90.8% to 96.8%), and 89.7% (95% confidence interval 85.6% to 93.8%) at 2, 5, and 10 to 15 years, respectively. Six grafts (7.0%) required knee arthroplasty at a mean of 4.6 ± 1.8 years (2.2 to 7.1). Most common reasons for revision surgeries with graft retention included implant removal (11.6%), débridement (8.1%), and repeat osteotomy (5.8%). The mean mHSS score of 90.8 ± 10.4 (51 to 100) at the final follow-up was significantly higher than the preoperative value of 72.5 ± 12.1 (36 to 90) (P < 0.001). Subgroup analyses revealed a markedly greater risk of failure in grafts with a diameter of 30 mm or larger. DISCUSSION Plug OCA with or without concurrent realignment osteotomy resulted in an excellent graft survival of 93% at a mean of 6.8 years, with reliable functional improvement demonstrated by notable improvements in mHSS knee scores.
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Holwein C, Jungmann P, Suchowierski J, Gersing A, Wörtler K, Brucker P, Angele P, Imhoff A, Vogt S. Sandwich Technique for Large Osteochondral Lesions of the Knee. Cartilage 2022; 13:19476035221102571. [PMID: 35906752 PMCID: PMC9340910 DOI: 10.1177/19476035221102571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To evaluate whether a sandwich technique procedure for large osteochondral lesions (OCL) of the medial femur condyle reduces clinical symptoms and improves activity level as well as to assess repair tissue integration on MRI over 2 years. DESIGN Twenty-one patients (median age: 29 years, 18-44 years) who received matrix-associated autologous chondrocyte transplantation (MACT) combined with cancellous bone grafting at the medial femur condyle in a 1-step procedure were prospectively included. Patients were evaluated before surgery (baseline) as well as 3, 6, 12, and 24 months postoperatively, including clinical evaluation, Lysholm score, Tegner Activity Rating Scale, and MRI with Magnetic Resonance Observation of Cartilage Repair Tissue (MOCART) score and a modified Whole-Organ Magnetic Resonance Imaging Score (WORMS). RESULTS Seventeen patients were available for the 24-month (final) follow-up (4 dropouts). Lysholm significantly improved from 48 preoperatively stepwise to 95 at final follow-up (P < 0.05). Tegner improvement from 2.5 at baseline to 4.0 at final follow-up was not significant (P = 1.0). MOCART score improved significantly and stepwise from 65 at 3 months to 90 at 24 months (P < 0.05). Total WORMS improved from 14.5 at surgery to 7.0 after 24 months (P < 0.05). Body mass index and defect size at surgery correlated with total WORMS at final follow-up (P < 0.05) but did not correlate with clinical scores or defect filling. CONCLUSION MACT combined with cancellous bone grafting at the medial femoral condyle reduces symptoms continuously over 2 years. A 1-step procedure may reduce perioperative morbidity. However, despite improvements, patients' activity levels remain low, even 2 years after surgery.
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Affiliation(s)
- C. Holwein
- Orthopädisch-Unfallchirurgisches Zentrum, Alb Fils Kliniken GmbH, Göppingen, Germany,Abteilung und Poliklinik für Sportorthopädie, Klinikum rechts der Isar der Technischen Universität München, München, Germany,C. Holwein, Rohrbachstraße 11, 73337 Bad Überkingen, Germany.
| | - P.M. Jungmann
- Zentrales Röntgeninstitut Kantonsspital Graubünden, Spital Davos AG, Davos, Switzerland
| | - J. Suchowierski
- Abteilung und Poliklinik für Sportorthopädie, Klinikum rechts der Isar der Technischen Universität München, München, Germany
| | - A.S. Gersing
- Institut für diagnostische und Interventionelle Radiologie, Klinikum rechts der Isar der Technischen Universität München, München, Germany,Institut für Neuroradiologie, Klinikum der Universität München, München, Germany
| | - K. Wörtler
- Institut für diagnostische und Interventionelle Radiologie, Klinikum rechts der Isar der Technischen Universität München, München, Germany
| | - P.U. Brucker
- MVZ ATOS Klinik München, München, Germany,Orthopädie in der Ottostraße, München, Germany
| | - P. Angele
- Klinik für Unfallchirurgie, Universitätsklinikum Regensburg, Regensburg, Germany,Sporthopaedicum Regensburg, Regensburg, Germany
| | - A.B. Imhoff
- Abteilung und Poliklinik für Sportorthopädie, Klinikum rechts der Isar der Technischen Universität München, München, Germany
| | - S. Vogt
- Sportorthopädie und arthroskopische Chirurgie, Hessing Stiftung, Augsburg, Germany
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Stark M, Rao S, Gleason B, Jack RA, Tucker B, Hammoud S, Freedman KB. Rehabilitation and Return-to-Play Criteria After Fresh Osteochondral Allograft Transplantation: A Systematic Review. Orthop J Sports Med 2021; 9:23259671211017135. [PMID: 34377714 PMCID: PMC8320585 DOI: 10.1177/23259671211017135] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 02/15/2021] [Indexed: 12/20/2022] Open
Abstract
Background: Fresh osteochondral allograft (OCA) is a treatment option that allows for the transfer of size-matched allograft cartilage and subchondral bone into articular defects of the knee. Although long-term studies show good functional improvement with OCA, there continues to be wide variability and a lack of consensus in terms of postoperative rehabilitation protocols and return to sport. Purpose: To systematically review the literature and evaluate the reported rehabilitation protocols after OCA of the knee, including weightbearing and range of motion (ROM) restrictions as well as return-to-play criteria. Study Design: Systematic review; Level of evidence, 4. Methods: PubMed, EMBASE, Cumulative Index of Nursing Allied Health Literature, SPORTDiscus, and Cochrane databases were searched according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines for studies on knee OCA. Studies were included if they reported return-to-play data or postsurgical rehabilitation protocols. Results: A total of 62 studies met the inclusion criteria, with a total of 3451 knees in 3355 patients. Concomitant procedures were included in 30 of these studies (48.4%). The most commonly cited rehabilitation protocols included weightbearing restrictions and ROM guidelines in 100% and 90% of studies, respectively. ROM was most commonly initiated within the first postoperative week, with approximately half of studies utilizing continuous passive motion. Progression to weightbearing as tolerated was reported in 60 studies, most commonly at 6 weeks (range, immediately postoperatively to up to 1 year). Of the 62 studies, 37 (59.7%) included an expected timeline for either return to play or return to full activity, most commonly at 6 months (range, 4 months to 1 year). Overall, 13 studies (21.0%) included either objective or subjective criteria to determine return to activity within their rehabilitation protocol. Conclusion: There is significant heterogeneity for postoperative rehabilitation guidelines and the return-to-play protocol after OCA of the knee in the literature, as nearly half of the included studies reported use of concomitant procedures. However, current protocols appear to be predominantly time-based without objective criteria or functional assessment. Therefore, the authors recommend the development of objective criteria for patient rehabilitation and return-to-play protocols after OCA of the knee.
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Affiliation(s)
- Michael Stark
- Division of Orthopaedic Surgery, Rowan University, Stratford, New Jersey, USA
| | - Somnath Rao
- The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Brendan Gleason
- The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Robert A Jack
- The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Houston Methodist Orthopedics and Sports Medicine, Houston, Texas, USA
| | - Bradford Tucker
- The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Sommer Hammoud
- The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Kevin B Freedman
- The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
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Asopa V, Atkinson H. Complications in knee surgery. ORTHOPAEDICS AND TRAUMA 2019; 33:372-377. [DOI: 10.1016/j.mporth.2019.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Jones KJ, Kelley BV, Arshi A, McAllister DR, Fabricant PD. Comparative Effectiveness of Cartilage Repair With Respect to the Minimal Clinically Important Difference. Am J Sports Med 2019; 47:3284-3293. [PMID: 31082325 DOI: 10.1177/0363546518824552] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Recent studies demonstrated a 5% increase in cartilage repair procedures annually in the United States. There is currently no consensus regarding a superior technique, nor has there been a comprehensive evaluation of postoperative clinical outcomes with respect to a minimal clinically important difference (MCID). PURPOSE To determine the proportion of available cartilage repair studies that meet or exceed MCID values for clinical outcomes improvement over short-, mid-, and long-term follow-up. STUDY DESIGN Systematic review and meta-analysis. METHODS A systematic review was performed via the Medline, Scopus, and Cochrane Library databases. Available studies were included that investigated clinical outcomes for microfracture (MFX), osteoarticular transfer system (OATS), osteochondral allograft transplantation, and autologous chondrocyte implantation/matrix-induced autologous chondrocyte implantation (ACI/MACI) for the treatment of symptomatic knee chondral defects. Cohorts were combined on the basis of surgical intervention by performing a meta-analysis that utilized inverse-variance weighting in a DerSimonian-Laird random effects model. Weighted mean improvements in International Knee Documentation Committee (IKDC), Lysholm, and visual analog scale for pain (VAS pain) scores were calculated from preoperative to short- (1-4 years), mid- (5-9 years), and long-term (≥10 years) postoperative follow-up. Mean values were compared with established MCID values per 2-tailed 1-sample Student t tests. RESULTS A total of 89 studies with 3894 unique patients were analyzed after full-text review. MFX met MCID values for all outcome scores at short- and midterm follow-up with the exception of VAS pain in the midterm. OATS met MCID values for all outcome scores at all available time points; however, long-term data were not available for VAS pain. Osteochondral allograft transplantation met MCID values for IKDC at short- and midterm follow-up and for Lysholm at short-term follow-up, although data were not available for other time points or for VAS pain. ACI/MACI met MCID values for all outcome scores (IKDC, Lysholm, and VAS pain) at all time points. CONCLUSION In the age of informed consent, it is important to critically evaluate the clinical outcomes and durability of cartilage surgery with respect to well-established standards of clinical improvement. MFX failed to maintain VAS pain improvements above MCID thresholds with follow-up from 5 to 9 years. All cartilage repair procedures met MCID values at short- and midterm follow-up for IKDC and Lysholm scores; ACI/MACI and OATS additionally met MCID values in the long term, demonstrating extended maintenance of clinical benefits for patients undergoing these surgical interventions as compared with MFX.
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Affiliation(s)
- Kristofer J Jones
- Department of Orthopaedic Surgery, University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Benjamin V Kelley
- Department of Orthopaedic Surgery, University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Armin Arshi
- Department of Orthopaedic Surgery, University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - David R McAllister
- Department of Orthopaedic Surgery, University of California, Los Angeles (UCLA), Los Angeles, California, USA
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Cavendish PA, Everhart JS, Peters NJ, Sommerfeldt MF, Flanigan DC. Osteochondral Allograft Transplantation for Knee Cartilage and Osteochondral Defects. JBJS Rev 2019; 7:e7. [DOI: 10.2106/jbjs.rvw.18.00123] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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10
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Reisbig NA, Pinnell E, Scheuerman L, Hussein H, Bertone AL. Synovium extra cellular matrices seeded with transduced mesenchymal stem cells stimulate chondrocyte maturation in vitro and cartilage healing in clinically-induced rat-knee lesions in vivo. PLoS One 2019; 14:e0212664. [PMID: 30861010 PMCID: PMC6414009 DOI: 10.1371/journal.pone.0212664] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 02/07/2019] [Indexed: 12/19/2022] Open
Abstract
Osteoarthritis (OA) is a progressive disease associated with cartilage injury and its inherently limited repair capability. Synovium-based cellular constructs (sConstructs) are proposed as possible treatments. Equine sConstructs were produced from decellularized synovium-based extracellular matrix scaffolds (sECM) seeded with synovium-derived mesenchymal stem cells (sMSC), and engineered to express green fluorescent protein (GFP), or bone morphogenetic protein-2 (BMP-2). Survival, distribution, and chondrogenic potential of the sConstructs in vitro and in vivo were assessed. sConstructs in co-culture with chondrocytes increased chondrocyte proliferation, viability, and Col II production, greatest in BMP-2-sConstructs. Chondrocyte presence increased the production of hyaluronic acid (HA), proteoglycan (PG), and BMP-2 by the sConstructs in a positive feedback loop. sECM alone, or GFP- or BMP-2-sConstructs were implanted in synovium adjacent to clinically created full-thickness rat-knee cartilage lesions. At 5 weeks, the lesion area and implants were resected. Gross anatomy, adjacent articulate cartilage growth and subchondral bone repair were scored; and peripheral, central and cartilage lesion measurements taken. For all scores and measurements, sConstruct implants were significantly greater than controls, greatest with the BMP-2-sConstructs. Immunohistochemistry demonstrated migration of endogenous cells into the sECM, with greater cellularity in the constructs with intense positive GFP staining confirming engraftment of implanted sMSC and continued gene expression. In summary, exposing cartilage to sConstructs was chondrogenic in vitro and in vivo, and resulted in substantially increased growth in vivo. This effect was mediated, in part, by soluble ECM and cell factors and upregulation of anabolic growth proteins, such as BMP-2. This work is "proof of concept" that sConstructs surgically implanted adjacent to cartilage damage can significantly improve cartilage and subchondral bone repair, and potentially prevent the progression of OA.
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Affiliation(s)
- Nathalie A. Reisbig
- Comparative Orthopedics Research Laboratory, Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America
| | - Erin Pinnell
- Comparative Orthopedics Research Laboratory, Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America
| | - Logan Scheuerman
- Comparative Orthopedics Research Laboratory, Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America
| | - Hayam Hussein
- Comparative Orthopedics Research Laboratory, Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America
| | - Alicia L. Bertone
- Comparative Orthopedics Research Laboratory, Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America
- * E-mail:
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11
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Cotter EJ, Hannon CP, Christian DR, Wang KC, Lansdown DA, Waterman BR, Frank RM, Cole BJ. Clinical Outcomes of Multifocal Osteochondral Allograft Transplantation of the Knee: An Analysis of Overlapping Grafts and Multifocal Lesions. Am J Sports Med 2018; 46:2884-2893. [PMID: 30179524 DOI: 10.1177/0363546518793405] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND There is a paucity of literature regarding the outcomes of adjacent-plug osteochondral allograft transplantation (OCA) for irregular or ovoid lesions and multifocal OCA for multicompartmental, focal lesions. PURPOSE To quantify the survival of multiplug OCA for larger, high-grade chondral lesions with the "snowman" technique versus that of multicompartmental or bipolar OCA. STUDY DESIGN Case series; Level of evidence, 4. METHODS All patients who underwent primary, multiplug OCA for large unicondylar, multicompartmental (eg, bipolar patellofemoral and condylar, bicondylar), or bipolar chondral defects (ie, patellofemoral) with a minimum 2-year follow-up by a single surgeon from April 1, 2003, to April 1, 2015, were analyzed. Failure was defined as revision OCA, conversion to arthroplasty, or gross appearance of graft degeneration on second-look arthroscopic surgery. RESULTS Twenty-six patients (28 knees) were identified, with 22 patients (24 knees; 50% female; mean age, 31.9 ± 9.1 years) having at least 2-year clinical follow-up (85.7%). Nine patients (9 knees) underwent isolated, condylar OCA with the snowman technique and had a mean follow-up of 7.4 ± 3.6 years (range, 1.38-11.14 years), while 13 additional patients (15 knees) underwent multifocal OCA and had a mean follow-up of 6.4 ± 3.9 years (range, 2.07-12.38 years). Reoperations were common, with 44.4% (n = 4) of the snowman group and 20.0% (n = 3) of the multifocal group undergoing at least 1 reoperation. There were 3 failures (33.3%) in the snowman group at a mean 7.7 ± 5.5 years and 1 failure (6.7%) in the multifocal group at 4.5 ± 0.0 years, with all undergoing secondary total knee arthroplasty. Patients who underwent snowman OCA demonstrated significant postoperative improvement in the Knee injury and Osteoarthritis Outcome Score (KOOS) pain subscore and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) overall score ( P < .05 for both). Patients who underwent multifocal OCA demonstrated significant improvement in the International Knee Documentation Committee score; KOOS symptoms, activities of daily living, sport, and quality of life subscores; WOMAC stiffness, function, and overall subscores; and 12-Item Short Form Health Survey physical component summary score ( P < .05 for all). CONCLUSION Patients who underwent unicondylar, multiplug OCA using the snowman technique demonstrated inferior clinical outcomes, higher reoperation rates, and greater failure rates than those who underwent isolated single-graft transplantation. By contrast, multifocal OCA may be a viable knee preservation technique for young, active patients with multicompartmental chondral disease, leading to improved clinical outcomes and low reoperation and failure rates at midterm follow-up.
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Affiliation(s)
- Eric J Cotter
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Charles P Hannon
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - David R Christian
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Kevin C Wang
- Department of Orthopaedic Surgery, Mount Sinai Medical Center, New York, New York, USA
| | - Drew A Lansdown
- Department of Orthopaedic Surgery, University of California, San Francisco School of Medicine, San Francisco, California, USA
| | - Brian R Waterman
- Department of Orthopaedic Surgery, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Rachel M Frank
- Department of Orthopedics, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Brian J Cole
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
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