Chronic Exertional Compartment Syndrome Caused by Functional Venous Outflow Obstruction

NewsBot · May 4, 2021

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Chronic Exertional Compartment Syndrome Caused by Functional Venous Outflow Obstruction
McGinley, Joseph C. et al
Clinical Journal of Sport Medicine: April 20, 2021

Objective:
Investigate the theory that chronic exertional compartment syndrome (CECS) results from venous outflow obstruction due to functional muscular compression. Chronic exertional compartment syndrome occurs when increased pressure within a muscle compartment produces pain and/or neurologic symptoms. The exact etiology of CECS is unknown, leading to inconsistent diagnostic and treatment plans.

Study Design:
Retrospective case series.

Setting:
Private practice and sports medicine.

Patients:
Two hundred eighty-four patients with exercise-induced lower leg pain. Twenty-two patients lost to follow-up.

Interventions:
Leg vasculature was evaluated using stress computed tomography angiography (CTA) and MVP Flex to identify areas of functional venous compression. All patients then underwent targeted botulinum toxin treatment. Posttreatment follow-up imaging was performed using stress CTA in 197 patients.

Main Outcome Measures:
Presence of functional venous compression on stress CTA. Symptom reduction and normalization of venous flow after targeted botulinum toxin injections.

Results:
Baseline imaging demonstrated CECS and functional venous obstruction with replication of symptoms in 260 of 284 patients [91.5% ± 3.2% (95% CI)]. Four weeks after treatment, 227 of 284 patients [79.9% ± 4.7% (95% CI)] described reduced/resolved symptoms with activity. One hundred fifty-five of the 197 patients [78.7% ± 5.7% (95% CI)] reimaged with stress CTA demonstrated resolved/reduced venous outflow obstruction. Twenty-two patients were lost to follow-up, and 35 patients had persistent symptoms.

Conclusion:
Chronic exertional compartment syndrome results from venous outflow obstruction due to functional muscular compression. Understanding the cause of CECS will allow the development of more precise and successful treatment plans. Based on our findings, treatment should be directed at the sites of venous compression.
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Craig Payne · May 4, 2021

"Chronic exertional compartment syndrome results from venous outflow obstruction due to functional muscular compression."

So it appears that the pain in compartment syndrome is due to the venous outflow obstruction - that a new interesting finding.

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Craig Payne Moderator

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