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Journal of Bone and Joint Surgery - British Volume, Vol 91-B, Issue 8,
1064-1068.
doi: 10.1302/0301-620X.91B8.21959 Copyright © 2009 by British Editorial Society of Bone and Joint Surgery The use of MRI to detect occult fractures of the proximal femurA STUDY OF 102 CONSECUTIVE CASES OVER A TEN-YEAR PERIODR. A. Sankey, MA, FRCS(Orth), Orthopaedic Specialist Registrar1; J. Turner, MBBS, Orthopaedic SHO1; J. Lee, MRCS, FRCR, Consultant Musculoskeletal Radiologist1; J. Healy, MRCP, FRCR, FFSEM, Consultant Musculoskeletal Radiologist1; and C. E. R. Gibbons, FRCS(Orth), Orthopaedic Consultant11 Chelsea and Westminster Hospital, 369 Fulham Road, London SW10 9NH, UK. Correspondence should be sent to Mr R. A. Sankey; e-mail: rasankey{at}hotmail.com
An MR scan was performed on all patients who presented to our hospital with a clinical diagnosis of a fracture of the proximal femur, but who had no abnormality on plain radiographs. This was a prospective study of 102 consecutive patients over a ten-year period. There were 98 patients who fulfilled our inclusion criteria, of whom 75 were scanned within 48 hours of admission, with an overall mean time between admission and scanning of 2.4 days (0 to 10). A total of 81 patients (83%) had abnormalities detected on MRI; 23 (23%) required operative management. The use of MRI led to the early diagnosis and treatment of occult hip pathology. We recommend that incomplete intertrochanteric fractures are managed non-operatively with protected weight-bearing. The study illustrates the high incidence of fractures which are not apparent on plain radiographs, and shows that MRI is useful when diagnosing other pathology such as malignancy, which may not be apparent on plain films.
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