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Journal of Bone and Joint Surgery - British Volume, Vol 88-B, Issue 3, 411-415.
doi: 10.1302/0301-620X.88B3.16856  
Copyright © 2006 by British Editorial Society of Bone and Joint Surgery
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Cyclic pneumatic soft-tissue compression accelerates the union of distal radial osteotomies in an ovine model

M. J. Challis, BAppSci (Physio), PhD, Physiotherapist1; P. Gaston, MBChC(Hons), FRCSEd(Tr & Orth), Consultant Orthopaedic Surgeon2; K. Wilson, MVSc, BSc, Veterinary Surgeon3; G. A. Jull, M Phty, PhD, Professor of Physiotherapy1; and R. Crawford, FRACS, DPhil (Oxon), Professor of Orthopaedic Research1

1 The University of Queensland, Brisbane, Queensland, Australia.
2 Royal Infirmary of Edinburgh, Edinburgh, UK.
3 The Prince Charles Hospital, Rode Road, Chermside, Brisbane, Queensland, Australia.

Correspondence should be sent to Professor R. Crawford at Level 5, Clinical Sciences Building, The Prince Charles Hospital, Rode Road, Chermside, Queensland 4032, Australia; e-mail: r.crawford{at}qut.edu.au

The aim of this randomised, controlled in vivo study in an ovine model was to investigate the effect of cylic pneumatic pressure on fracture healing. We performed a transverse osteotomy of the right radius in 37 sheep. They were randomised to a control group or a treatment group where they received cyclic loading of the osteotomy by the application of a pressure cuff around the muscles of the proximal forelimb. Sheep from both groups were killed at four or six weeks. Radiography, ultrasonography, biomechanical testing and histomorphometry were used to assess the differences between the groups. The area of periosteal callus, peak torsional strength, fracture stiffness, energy absorbed over the first 10° of torsion and histomorphometric analysis all showed that the osteotomies treated with the cyclic pneumatic pressure at four weeks were not significantly different from the control osteotomies at six weeks.






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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General