• Meir Marmor, Jonathan Charlu, Riley Knox, William Curtis, Paul Hoogervorst, and Safa Herfat.
• Department of Orthopaedic Surgery, University of California, San Francisco, CA, United States. Electronic address: meir.marmor@ucsf.edu.
• Injury. 2019 Mar 1; 50 (3): 627-632.

IntroductionAcute compartment syndrome (ACS) is a limb-threatening condition often associated with leg injury. The only treatment of ACS is fasciotomy with the purpose of reducing muscle compartment pressures (MCP). Patient discomfort and low reliability of invasive MCP measurements, has led to the search for alternative methods. Our goal was to test the feasibility of using ultrasound to diagnose elevated MCP.MethodsA cadaver model of elevated MCPs was used in 6 cadaver legs. An ultrasound transducer was combined with a pressure sensing transducer to obtain a B-mode image of the anterior compartment, while controlling the amount of pressure applied to the skin. MCP was increased from 0 to 75 mmHg. The width of the anterior compartment (CW) and the pressure needed to flatten the bulging superficial compartment fascia (CFFP) were measured.ResultsBoth the CW and CFFP showed high correlations to MCP in the individual cadavers. Average CW and CFFP significantly increased between baseline and the first elevated MCP states. Both Inter-observer and intra-observer agreements for the ultrasound measurements were good to excellent.DiscussionUltrasound indexes showed excellent correlations in compartment pressures, suggesting that there is a potential for the clinical use of this modality in the future.Copyright © 2019 Elsevier Ltd. All rights reserved.

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