Clinical Presentation
Using transvaginal ultrasound, the median diameters measured for the S1, S2, and S3 nerve roots were 4.8mm, 4.3mm, and 3.2mm on both sides, respectively, providing normative data for these structures [PMID:39837546].
Diagnosis
In a study involving 305 premenopausal women, transvaginal sonography successfully identified the piriformis muscle bilaterally in 96.1% of cases and visualized S1-S3 nerve roots with varying success rates (S1: 73.4%, S2: 70.5%, S3: 66.6%) [PMID:39837546].
Management
The study demonstrates that transvaginal sonography allows for consistent and rapid identification of the piriformis muscle and proximal sacral nerve roots, which could be valuable for monitoring and diagnosing pathological changes in clinical settings [PMID:39837546].
References
1 Szabó G, Bokor A, Fancsovits V, Darici Kurt E, Hudelist T, Hudelist G. Standardized measurement of the piriformis muscle and the proximal portion of the sacral nerve roots using transvaginal ultrasound. Ultraschall in der Medizin (Stuttgart, Germany : 1980) 2026. link
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