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Original Article

Tendon Blood Flow Assessed by Laser Doppler Flowmetry

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Pages 213-215 | Published online: 08 Jul 2009
 

Abstract

Laser Doppler flowmetry was applied to the surface of both achilles tendons in 10 mature albino rats. A prompt decline in flux values by about 60% was noted when the blood supply to the limb was interrupted by clamping the femoral artery. Increased values, indicating a hyperaemic reaction, often followed release of the clamp. Flux values reached a minimum after death, and this was used as a baseline measurement to eliminate Doppler signals generated by factors unrelated to flow. Although readings in two animals had to be omitted for technical reasons, the present study shows that reliable laser Doppler flow readings can be obtained from the surface of a tendon. The response to reversible ischaemia is prompt and reproducible. Laser Doppler flowmetry may offer a new approach to the assessment of tendon blood flow at the microvascular level.

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