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Metaphyseal burst sign: A secondary sign on MRI of subchondral insufficiency fracture of the knee
Author(s) -
Vidoni Alessandro,
Shah Rachit,
Mak Davina,
Beale David,
Beale Sioned,
James Steven,
Botchu Rajesh
Publication year - 2018
Publication title -
journal of medical imaging and radiation oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.31
H-Index - 43
eISSN - 1754-9485
pISSN - 1754-9477
DOI - 10.1111/1754-9485.12781
Subject(s) - medicine , insufficiency fracture , condyle , soft tissue , sign (mathematics) , radiology , femoral condyle , anatomy , pathology , osteoporosis , mathematical analysis , cartilage , mathematics
To describe a novel secondary sign of subchondral insufficiency fracture of the knee, metaphyseal burst sign (soft tissue oedema in the meta‐epiphyseal region of the affected condyle). Methods An electronic database research of 7926 knee MRI examinations was performed. Forty‐eight scans were included in the study. The diagnosis of subchondral insufficiency fracture ( SIF ) was confirmed in a consensus review by one fellowship trained musculoskeletal (MSK) radiologist and one radiology fellow. The presence of metaphyseal burst sign was evaluated in the cohort. Results Forty‐one patients were included in the study (21 males, 20 females). The mean age was 61.5 years (range 41–80 years). The anatomical location was medial femoral condyle ( n = 28), the lateral femoral condyle ( n = 5) and medial tibial condyle ( n = 8). The metaphyseal burst sign was present in 45 of the 48 scans reviewed. The average craniocaudal length of the soft tissue oedema defined as metaphyseal burst sign was 7 cm (range 10.5 to 4.5). Conclusion The metaphyseal burst sign is an early, indirect sign of SIF .