Injury resulting in fracture line extending through articular cartilage and some portion of underlying bone
May or may not result in displaced fragment
OCD
Term historically used to describe OCF of knee in adolescents
Some believe this is also due to a component of osteonecrosis
Medial femoral condyle in 85%
Lateral weight-bearing aspect in 70% of these
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
Staging, Grading, & Classification
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Reporting Tips
Selected References
Ghahremani S et al: Osteochondral lesions in pediatric and adolescent patients. Semin Musculoskelet Radiol. 18(5):505-12, 2014
Zbojniewicz AM et al: Imaging of osteochondritis dissecans. Clin Sports Med. 33(2):221-50, 2014
Jans LB et al: MRI differentiates femoral condylar ossification evolution from osteochondritis dissecans. A new sign. Eur Radiol. 21(6):1170-9, 2011
Uozumi H et al: Histologic findings and possible causes of osteochondritis dissecans of the knee. Am J Sports Med. 37(10):2003-8, 2009
Kijowski R et al: Juvenile versus adult osteochondritis dissecans of the knee: appropriate MR imaging criteria for instability. Radiology. 248(2):571-8, 2008
Potter HG et al: Magnetic resonance imaging of cartilage repair. Sports Med Arthrosc. 16(4):236-45, 2008
Walsh SJ et al: Large osteochondral fractures of the lateral femoral condyle in the adolescent: outcome of bioabsorbable pin fixation. J Bone Joint Surg Am. 90(7):1473-8, 2008
Ramnath RR et al: MR appearance of SONK-like subchondral abnormalities in the adult knee: SONK redefined. Skeletal Radiol. 33(10):575-81, 2004
Alleyne KR et al: Management of osteochondral injuries of the knee. Clin Sports Med. 20(2):343-64, 2001
Cain EL et al: Treatment algorithm for osteochondral injuries of the knee. Clin Sports Med. 20(2):321-42, 2001
Farmer JM et al: Chondral and osteochondral injuries. Diagnosis and management. Clin Sports Med. 20(2):299-320, 2001
Loredo R et al: Imaging of osteochondral injuries. Clin Sports Med. 20(2):249-78, 2001
Sledge SL: Microfracture techniques in the treatment of osteochondral injuries. Clin Sports Med. 20(2):365-77, 2001
Tamburrini O et al: ["Occult" posttraumatic lesions of the knee: can magnetic resonance substitute for diagnostic arthroscopy?.] Radiol Med. 94(5):433-9, 1997
Injury resulting in fracture line extending through articular cartilage and some portion of underlying bone
May or may not result in displaced fragment
OCD
Term historically used to describe OCF of knee in adolescents
Some believe this is also due to a component of osteonecrosis
Medial femoral condyle in 85%
Lateral weight-bearing aspect in 70% of these
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
Staging, Grading, & Classification
Gross Pathologic & Surgical Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Reporting Tips
Selected References
Ghahremani S et al: Osteochondral lesions in pediatric and adolescent patients. Semin Musculoskelet Radiol. 18(5):505-12, 2014
Zbojniewicz AM et al: Imaging of osteochondritis dissecans. Clin Sports Med. 33(2):221-50, 2014
Jans LB et al: MRI differentiates femoral condylar ossification evolution from osteochondritis dissecans. A new sign. Eur Radiol. 21(6):1170-9, 2011
Uozumi H et al: Histologic findings and possible causes of osteochondritis dissecans of the knee. Am J Sports Med. 37(10):2003-8, 2009
Kijowski R et al: Juvenile versus adult osteochondritis dissecans of the knee: appropriate MR imaging criteria for instability. Radiology. 248(2):571-8, 2008
Potter HG et al: Magnetic resonance imaging of cartilage repair. Sports Med Arthrosc. 16(4):236-45, 2008
Walsh SJ et al: Large osteochondral fractures of the lateral femoral condyle in the adolescent: outcome of bioabsorbable pin fixation. J Bone Joint Surg Am. 90(7):1473-8, 2008
Ramnath RR et al: MR appearance of SONK-like subchondral abnormalities in the adult knee: SONK redefined. Skeletal Radiol. 33(10):575-81, 2004
Alleyne KR et al: Management of osteochondral injuries of the knee. Clin Sports Med. 20(2):343-64, 2001
Cain EL et al: Treatment algorithm for osteochondral injuries of the knee. Clin Sports Med. 20(2):321-42, 2001
Farmer JM et al: Chondral and osteochondral injuries. Diagnosis and management. Clin Sports Med. 20(2):299-320, 2001
Loredo R et al: Imaging of osteochondral injuries. Clin Sports Med. 20(2):249-78, 2001
Sledge SL: Microfracture techniques in the treatment of osteochondral injuries. Clin Sports Med. 20(2):365-77, 2001
Tamburrini O et al: ["Occult" posttraumatic lesions of the knee: can magnetic resonance substitute for diagnostic arthroscopy?.] Radiol Med. 94(5):433-9, 1997
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