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Journal of Bone and Joint Surgery - British Volume, Vol 87-B, Issue 10, 1385-1390.
doi: 10.1302/0301-620X.87B10.16666  
Copyright © 2005 by British Editorial Society of Bone and Joint Surgery
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Fatigue injuries of the femur

M. H. Niva, MD, Research Fellow1; M. J. Kiuru, MD, PhD, MSc, Radiologist, Associate, Professor1; R. Haataja, MSc, Assistant Professor in Biometry2; and H. K. Pihlajamäki, MD, PhD, Orthopaedic Surgeon, Associate Professor1

1 Department of Orthopaedic Surgery, Research Institute of Military Medicine, Central Military Hospital, P. O. Box 50, FIN-00300, Helsinki, Finland.
2 Tampere School of Public Health, FIN-33014 University of Tampere, Finland.

Correspondence should be sent to Dr M. H. Niva; e-mail: maria.niva{at}fimnet.fi

The purpose of this study was to describe the anatomical distribution and incidence of fatigue injuries of the femur in physically-active young adults, based upon MRI studies. During a period of 70 months, 1857 patients with exercise-induced pain in the femur underwent MRI of the pelvis, hips, femora, and/or knees.

Of these, 170 patients had a total of 185 fatigue injuries, giving an incidence of 199 per 100 000 person-years. Bilateral injuries occurred in 9% of patients. The three most common sites affected were the femoral neck (50%), the condylar area (24%) and the proximal shaft (18%). A fatigue reaction was seen in 57%, and a fracture line in 22%. There was a statistical correlation between the severity of the fatigue injury and the duration of pain (p = 0.001). The location of the pain was normally at the site of the fatigue injury. Fatigue injuries of the femur appear to be relatively common in physically-active patients.




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H. K. Pihlajamaki, J.-P. Ruohola, M. Weckstrom, M. J. Kiuru, and T. I. Visuri
Long-term outcome of undisplaced fatigue fractures of the femoral neck in young male adults
J Bone Joint Surg Br, December 1, 2006; 88-B(12): 1574 - 1579.
[Abstract] [Full Text] [PDF]


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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General