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Direct, real time measurement of meniscal blood flow

An experimental investigation in sheep

Department of Orthopaedics and Rehabilitation, Vanderbilt University, Nashville, Tennessee

Frank Schlehr, MD

Department of Orthopaedics and Rehabilitation, Vanderbilt University, Nashville, Tennessee

Roy Sanders, MD

Department of Orthopaedics and Rehabilitation, Vanderbilt University, Nashville, Tennessee

Thomas A. Limbird, MD

Department of Orthopaedics and Rehabilitation, Vanderbilt University, Nashville, Tennessee

Adrienne Pou

Department of Medicine, Vanderbilt University, Nashville, Tennessee

Jerry C. Collins, PhD

Department of Medicine, Vanderbilt University, Nashville, Tennessee

The functional microcirculatory system of the meniscus was investigated in nine sheep using laser Doppler flowmetry (LDF). The highest blood flows recorded were found at the periphery and at the anterior and posterior horns, and this finding was confirmed by india ink injections in five sheep and by meniscal autoradi ographs following intraatrial injection of 20 million Cs⁴⁶ microspheres in four sheep. LDF provides accurate and reproducible assessment of meniscal blood flow. If adequate probes can be developed, this method offers great promise in the clinical assessment of blood flow within the substance of meniscal tears, thus offering the surgeon initial information in the decision to repair or resect a meniscal tear.

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