Legg-Calve-Perthes disease and risks for cardiovascular diseases and blood diseases

Yasmin D Hailer1, Scott M Montgomery, Anders Ekbom

  • 1Uppsala University Hospital, Department of Orthopaedics, SE-75185 Uppsala, Sweden. yasmin.hailer@surgsci.uu.se

Pediatrics
|May 5, 2010
PubMed

Insights

Patients with Legg-Calvé-Perthes disease (LCPD) face increased risks of cardiovascular and blood diseases, including anemia and coagulation defects. These findings support the role of vascular issues in LCPD pathogenesis.

Area of Science:

  • Orthopedics
  • Cardiology
  • Hematology

Background:

  • Legg-Calvé-Perthes disease (LCPD) is a childhood hip disorder of unknown etiology.
  • Previous research suggests potential links between LCPD and vascular pathologies.

Purpose of the Study:

  • To investigate the long-term risks of cardiovascular and blood diseases in patients diagnosed with LCPD.
  • To compare these risks with a matched general population cohort and sibling controls.

Main Methods:

  • A cohort study utilizing the Swedish Inpatient Register identified 3141 patients with LCPD (ages 2-15).
  • A control group of 15,595 individuals without LCPD was randomly selected and matched by birth year, age, gender, and region.
  • Cox proportional-hazard regression analyses, adjusted for socioeconomic index, were employed to estimate relative risks, with sibling comparisons also conducted.

Main Results:

  • LCPD patients exhibited a 1.70-fold increased risk of cardiovascular diseases (HR: 1.70, 95% CI: 1.39-2.09), with higher risk observed in those over 30 at follow-up (HR: 2.10).
  • Significantly elevated risks were found for blood diseases (HR: 1.41, 95% CI: 1.07-1.86), particularly anemias and coagulation defects, which were more pronounced in the >30 age group (HR: 2.70).
  • Higher risks of hypertensive disease (HR: 2.97) and nutritional anemia (HR: 2.92) were also noted in LCPD patients. Sibling analyses confirmed cardiovascular findings.

Conclusions:

  • The study supports the hypothesis that impaired blood supply to the femoral head, due to vascular pathology, plays a role in the development of LCPD.
  • The findings highlight a potential increased lifelong burden of cardiovascular and hematological conditions for individuals with a history of LCPD.
Abstract

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