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Article
Algorithm for Treatment of Focal Cartilage Defects of the Knee: Classic and New Procedures.
Cartilage (2021)
  • Betina B. Hinckel, Beaumont Hospital
  • Dimitri Thomas, UNC Orthopedics and Sports Medicine at Lenoir, Kinston, NC, USA.
  • Evan E. Vellios, Sports Medicine and Shoulder Surgeon Southern California Orthopedic Institute (SCOI), Van Nuys, CA, USA.
  • Kyle John Hancock, Desert Orthopaedic Center, Las Vegas, NV, USA.
  • Jacob G. Calcei, University Hospitals of Cleveland
  • Seth L. Sherman, Stanford University
  • Claire D. Eliasberg, Hospital for Special Surgery
  • Tiago L. Fernandes, University of São Paulo
  • Jack Farr, Indiana University – Purdue University Indianapolis
  • Christian Lattermann, Brigham and Women's Hospital
  • Andreas H. Gomoll, Hospital for Special Surgery
Abstract
Objective
To create a treatment algorithm for focal grade 3 or 4 cartilage defects of the knee using both classic and novel cartilage restoration techniques.
Design
A comprehensive review of the literature was performed highlighting classic as well as novel cartilage restoration techniques supported by clinical and/or basic science research and currently being employed by orthopedic surgeons.
Results
There is a high level of evidence to support the treatment of small to medium size lesions (<2-4 cm2) without subchondral bone involvement with traditional techniques such as marrow stimulation, osteochondral autograft transplant (OAT), or osteochondral allograft transplant (OCA). Newer techniques such as autologous matrix-induced chondrogenesis and bone marrow aspirate concentrate implantation have also been shown to be effective in select studies. If subchondral bone loss is present OAT or OCA should be performed. For large lesions (>4 cm2), OCA or matrix autologous chondrocyte implantation (MACI) may be performed. OCA is preferred over MACI in the setting of subchondral bone involvement while cell-based modalities such as MACI or particulated juvenile allograft cartilage are preferred in the patellofemoral joint.
Conclusions
Numerous techniques exist for the orthopedic surgeon treating focal cartilage defects of the knee. Treatment strategies should be based on lesion size, lesion location, subchondral bone involvement, and the level of evidence supporting each technique in the literature.
Keywords
  • articular cartilage,
  • cartilage repair,
  • cartilage transplantation
Publication Date
March 20, 2021
DOI
10.1177/1947603521993219
Citation Information
Hinckel BB, Thomas D, Vellios EE, Hancock KJ, Calcei JG, Sherman SL, Eliasberg CD, Fernandes TL, Farr J, Lattermann C, Gomoll AH. Algorithm for Treatment of Focal Cartilage Defects of the Knee: Classic and New Procedures. Cartilage. 2021 Mar 20:1947603521993219. doi: 10.1177/1947603521993219. Epub ahead of print. PMID: 33745340.