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Joint Bone Spine
Volume 74, n° 4
pages 373-378 (juillet 2007)
Doi : 10.1016/j.jbspin.2006.12.001
Received : 8 August 2006 ;  accepted : 7 December 2006
Pregnancy-related hip diseases: Incidence and diagnoses
 

Sarah Steib-Furno a, Luc Mathieu a, Thao Pham a, Thomas Armingeat a, Géraldine Porcu b, Marc Gamerre b, Christophe Chagnaud c, Pierre Lafforgue a,
a Department of Rheumatology, CHU la Conception, Hôpital la Conception, 147 Boulevard Baille, F-13385 Marseille Cedex 5, France 
b Department of Obstetrics, Hôpital la Conception, Marseille, France 
c Department of Radiology, Hôpital la Conception, Marseille, France 

Corresponding author. Tel.: +33 4 91 38 34 61; fax: +33 4 91 38 38 87.
Abstract
Background

Pregnancy-related hip diseases epidemiology has been poorly evaluated. We report our experience of gestational and postpartum hip diseases and evaluate their incidence.

Methods

(1) Prospective survey: all pregnant or early postpartum women suspected to have hip involvement during their follow-up in an Obstetric unit were referred to a rheumatologist. If clinically confirmed, magnetic resonance imaging (MRI) and additional investigations as needed were performed. This survey had 2 years duration. (2) Retrospective study: all cases of definite (with MRI confirmation) pregnancy-related hip disease referred to our Rheumatology unit during the past 15 years were analyzed.

Results

During the 2-year prospective survey, 3 patients (4 hips) of pregnancy-related hip disease were observed over 4900 pregnancies (1 case of transient osteoporosis of the hip (TOH) and 2 cases of occult fracture of the femoral head). During the 15-year retrospective study, 12 patients (17 hips) with hip diseases during pregnancy or early postpartum were identified. There were 6 patients (9 hips) with TOH, 4 patients (6 hips) with occult fracture of the femoral head, 1 patient with osteonecrosis of the femoral head, and 1 coxitis in a patient with ankylosing spondylitis. Differentiating diagnosis between TOH and occult fractures could only be made by MRI. Five of the 6 women with TOH had osteopenia at the lumbar spine at dual energy X-ray absorptiometry (DEXA). The 4 women with occult fractures had either osteopenia or osteoporosis at the lumbar spine.

Conclusion

Hip diseases are infrequent during pregnancy and early postpartum. Transient osteoporosis of the hip and occult stress fractures of the femoral head appear the main causes and those diagnoses justify evaluation for an underlying bone fragility. Osteonecrosis is very rare in this setting.

The full text of this article is available in PDF format.

Keywords : Hip, Pregnancy, Osteonecrosis, Transient osteoporosis, Stress fracture




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