Centre for Clinical Research Excellence in Spinal Pain, Injury and Health, School of Health and Rehabilitation Sciences, the University of Queensland, Brisbane, Australia.
J Urol. 2012 Oct;188(4):1224-30. doi: 10.1016/j.juro.2012.06.028. Epub 2012 Aug 16.
Transperineal ultrasound imaging enables the minimally invasive assessment of pelvic floor muscle function. Although commonly used in women, the approach has rarely been reported in men. This approach has advantages because the midsagittal view visualizes a bony landmark and the entire urethral length. This allows investigation of the displacement of multiple points along the urethra and the unique mechanical actions of multiple muscles that could influence continence. We used a new transperineal ultrasound technique to compare the relative displacement of urethrovesical junction, anorectal junction and distal urethra during voluntary pelvic floor muscle contractions in continent men.
We performed measurement and comparison of urethral displacement at specific urethral regions in 10 continent men (age range 28 to 41 years). Measures made on 2-dimensional midsagittal plane ultrasound images included the displacements of specific points along the urethra. Anatomical considerations suggest that these are caused by contraction of the levator ani, striated urethral sphincter and bulbocavernosus muscles. Pearson's correlation coefficient was used to investigate the relationship between displacements of pairs of points.
Data show individual variation in displacement of the distal urethra (striated urethral sphincter contraction) and urethrovesical junction (levator ani contraction). A strong inverse linear relationship (0.723) between displacements of these points indicates 2 alternative strategies of urethral movement.
Transperineal ultrasound imaging allows the simultaneous investigation of multiple pelvic floor muscles by measuring urethral displacement. The data provide evidence of different but coordinated strategies of urethral displacement in men.
经会阴超声成像可实现对盆底肌功能的微创评估。虽然这种方法在女性中应用广泛，但在男性中很少有报道。这种方法具有优势，因为正中矢状面视图可显示骨性标志和整个尿道长度。这可以研究尿道多个点的移位以及可能影响控尿的多个肌肉的独特机械作用。我们使用新的经会阴超声技术比较了 10 名控尿男性在自愿进行盆底肌收缩时尿道膀胱连接部、肛直肠连接部和尿道远端的相对位移。
我们对 10 名控尿男性（年龄 28 至 41 岁）进行了特定尿道区域的尿道位移测量和比较。在二维正中矢状面超声图像上进行的测量包括尿道特定点的位移。解剖学考虑表明，这些是由肛提肌、横纹尿道括约肌和球海绵体肌收缩引起的。使用 Pearson 相关系数来研究两点之间位移的关系。
数据显示尿道远端（横纹尿道括约肌收缩）和尿道膀胱连接部（肛提肌收缩）的位移存在个体差异。这些点的位移之间存在很强的负线性关系（0.723），表明尿道运动有两种替代策略。
经会阴超声成像可通过测量尿道位移来同时研究多个盆底肌。这些数据为男性尿道移位的不同但协调的策略提供了证据。
