Synovial fluid metabolites in osteonecrosis.

Published

Journal Article

OBJECTIVES: Osteonecrosis of the femoral head results from interruption of the vascular supply and eventual death of the cellular portion of bone. Effective methods of monitoring response to treatment are needed. Our aim was to evaluate synovial fluid metabolites, glucose and lactate, as biomarkers in a canine model of osteonecrosis. METHODS: Osteonecrosis was cryosurgically induced in the right femoral head while the left hip served as control (n = 31). Animals either underwent no further intervention (n = 10), vascular endothelial growth factor (VEGF) injections (n = 4), placement of a vascularized bone graft (n = 6), a combination of VEGF microinjection and vascularized graft placement (n = 5), or treatment with daily oral alendronate (n = 6). After 12 weeks, synovial fluid from each hip joint was obtained for glucose and lactate concentrations. RESULTS: Joints with surgically induced osteonecrosis demonstrated decreased synovial fluid concentrations of glucose (P < 0.05) and elevated concentrations of lactate (P < 0.05) relative to contralateral control hips. When animals were treated with VEGF, the vascularized graft placement, or vascularized graft and VEGF, there were no differences in the synovial fluid concentrations of these metabolites between cryoablated and control hips. In contrast, alendronate did not normalize the concentration of these synovial fluid metabolites in the cryoablated hips. CONCLUSIONS: Osteonecrosis of the femoral head is associated with alterations in synovial fluid glucose and lactate, reflecting anaerobic metabolism. These metabolites may serve as useful tools for monitoring response to revascularization therapies.

Full Text

Duke Authors

Cited Authors

  • Huffman, KM; Bowers, JR; Dailiana, Z; Huebner, JL; Urbaniak, JR; Kraus, VB

Published Date

  • March 2007

Published In

Volume / Issue

  • 46 / 3

Start / End Page

  • 523 - 528

PubMed ID

  • 17003168

Pubmed Central ID

  • 17003168

International Standard Serial Number (ISSN)

  • 1462-0324

Digital Object Identifier (DOI)

  • 10.1093/rheumatology/kel302

Language

  • eng

Conference Location

  • England