The Journal of Bone and Joint Surgery (American). 2006;88:4-9.
doi:10.2106/JBJS.F.00890
© 2006 The Journal of Bone and Joint Surgery, Inc.
The Physiology of Bone Blood Flow: A Review
Ian McCarthy, PhD, MBA CSci, FIPEM
Corresponding author: Ian McCarthy, PhD, MBA CSci, FIPEM Institute of
Orthopaedics and Musculoskeletal Science, Royal National Orthopaedic Hospital,
Brockley Hill, Stanmore HA7 4LP United Kingdom. E-mail address:
i.mccarthy{at}ucl.ac.uk
The author did not receive grants or outside funding in the preparation of
this manuscript. The author has in the past received external research
funding, from noncommercial sources, for studies of bone blood flow, and these
studies are cited in the manuscript. He did not receive payments or other
benefits or a commitment or agreement to provide such benefits from a
commercial entity. No commercial entity paid or directed, or agreed to pay or
direct, any benefits to any research fund, foundation, educational
institution, or other charitable or nonprofit organization with which the
author is affiliated or associated.
Introduction: Bone circulation plays an important role in bone
physiology, but has been relatively poorly studied, because most techniques of
circulatory research are difficult to apply to bone. This article summarizes
briefly some of the important aspects of the physiology of bone blood flow
most relevant to orthopaedics.
Methods: The gold standard for experimental measurement of bone
blood flow is the radioactive microsphere technique, though advances are being
made in other techniques, such as positron emission tomography, laser and
ultra-sound Doppler velocimetry, and near infrared spectroscopy, that may
provide useful clinical measurement in the future.
Results: Multiple vascular pathways contribute to an adaptive
response to traumatic disruption of bone circulation. The microcirculation is
not merely a passive conduit for blood flow, but plays an active role in
controlling bone processes such as osteochondral ossification.
Discussion: The pathophysiology of bone circulation has been
associated with osteonecrosis, but more and more evidence is pointing to the
importance of bone circulation in fracture repair and osteoporosis, both of
which are potentially very exciting areas for future studies.

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