title: Imaging of cartilage repair procedures.
abstract: The rationale for cartilage repair is to prevent precocious osteoarthritis in untreated focal cartilage injuries in the young and middle-aged population. The gamut of surgical techniques, normal postoperative radiological appearances, and possible complications have been described. An objective method of recording the quality of repair tissue is with the magnetic resonance observation of cartilage repair tissue (MOCART) score. This scoring system evaluates nine parameters that include the extent of defect filling, border zone integration, signal intensity, quality of structure and surface, subchondral bone, subchondral lamina, and records presence or absence of synovitis and adhesions. The five common techniques of cartilage repair currently offered include bone marrow stimulation (microfracture or drilling), mosaicplasty, synthetic resorbable scaffold grafts, osteochondral allograft transplants, and autologous chondrocyte implantation (ACI). Complications of cartilage repair procedures that may be demonstrated on magnetic resonance imaging (MRI) include plug loosening, graft protuberance, graft depression, and collapse in mosaicplasty, graft hypertrophy in ACI, and immune response leading to graft rejection, which is more common with synthetic grafts and cadaveric allografts.
authors.affiliation: Department of Radiology, Kokilaben Dhirubhai Ambani Hospital, Andheri (W), Mumbai, Maharashtra, India.
authors.forename: Darshana
authors.initials: D
authors.lastname: Sanghvi
authors.affiliation: Department of Radiology, Kokilaben Dhirubhai Ambani Hospital, Andheri (W), Mumbai, Maharashtra, India.
authors.forename: Mihir
authors.initials: M
authors.lastname: Munshi
authors.affiliation: Department of Orthopaedics, Kokilaben Dhirubhai Ambani Hospital, Andheri (W), Mumbai, Maharashtra, India.
authors.forename: Dinshaw
authors.initials: D
authors.lastname: Pardiwala
keywords: Cartilage; magnetic resonance imaging; repair
references.citation: Eur J Radiol. 2006 Jan;57(1):16-23
references.pmid: 16203119
references.citation: Knee Surg Sports Traumatol Arthrosc. 2011 Aug;19(8):1376-84
references.pmid: 21503808
references.citation: Eur J Radiol. 2004 Dec;52(3):310-9
references.pmid: 15544911
references.citation: Am J Sports Med. 2008 Nov;36(11):2091-9
references.pmid: 18801942
references.citation: Clin Radiol. 2013 Oct;68(10):1031-8
references.pmid: 23809267
references.citation: Radiographics. 2008 Jul-Aug;28(4):1043-59
references.pmid: 18635628
references.citation: Am J Sports Med. 2012 Jan;40(1):68-74
references.pmid: 22031857
references.citation: Expert Rev Med Devices. 2006 Sep;3(5):585-93
references.pmid: 17064244
references.citation: Osteoarthritis Cartilage. 2012 Jul;20(7):703-11
references.pmid: 22445916
references.citation: J Knee Surg. 2002 Summer;15(3):177-84
references.pmid: 12152980
references.citation: Arthroscopy. 2011 Jan;27(1):60-4
references.pmid: 20952149
references.citation: Knee Surg Sports Traumatol Arthrosc. 2014 Jun;22(6):1329-36
references.pmid: 23455387