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Osteosynthesis and Trauma Care 2004; 12(1): 1-3
DOI: 10.1055/s-2004-822594
Original Article

© Georg Thieme Verlag Stuttgart · New York

Femoral Head Necrosis Associated with Intracapsular Non-Displaced Hip Fractures Treated by Osteosynthesis

J. Albareda1 , F. García-Alvarez1 , J. M. Lasierra1 , B. Seral1
  • 1Department of Orthopedic Surgery and Traumatology, University Hospital “Lozano Blesa”, Medical School, Zaragoza, Spain
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Publication History

Publication Date:
30 March 2004 (online)

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Abstract

Background: Several causes have been described to explain the development of femoral head necrosis after intracapsular femoral neck fractures. However, in certain cases, especially in non-displaced fractures, a clear etiology does not appear. The aim of the present study is to ascertain the influence of proximal femoral morphology in femoral head necrosis development after non-displaced intracapsular femoral neck fractures treated with three 4.5 mm cancellous screws.
Patients and Methods: Sixty-seven patients (51 women) were treated consecutively. Patients had a mean age of 75 (35-94) years. Mean follow-up was 12 (9-48) months. Fracture consolidation, femoral head necrosis, cervical-diaphyseal angle, head diameter, femoral neck width, and head-neck length were analyzed.
Results: Nine cases of necrosis in the phase of segmentary collapse appeared, all of them in women. Necrosis cases presented a smaller diameter of the femoral head (44.7 mm) than non-necrosis cases (50.1 mm) (p < 0.05).
Discussion and Conclusion: These results may be due to a poorer vascularization and/or a smaller size of the femoral head in women, with the osteosynthesis material occupying a proportionally greater head volume.

Key words

Hip - intracapsular fracture - osteosynthesis - avascular necrosis

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J. AlbaredaAssociate Professor 

C/Pomarón n° 11

50008 Zaragoza

Spain

Email: j-albareda@terra.es