Abstract:
PURPOSE:In this research, the normal anatomy of urethral sphincter complex in young Chinese males has been studied. METHODS:The sagittal, coronal, and axial T2-weighted non-fat suppressed fast spin-echo images of pelvic cavities of 86 Chinese young males were studied. RESULT:Urethral sphincter complex is a cylindrical structure surrounding the urethra and extending vertically from bladder neck to perineal membrane. Urethral striated sphincter covers the anteriolateral urethra like a hat from bladder neck to verumontanum, while it surrounds the urethra in a ring shape from verumontanum to perineal membrane and backwards ends in central tendon of the perineum. From bladder neck to perineal membrane, the thickness of urethral smooth sphincter decreases gradually, and it extends forward to surround urethra with urethral striated sphincter as a ring. The length of urethral striated sphincter is 12.26-20.94 mm (mean 16.59 mm) at membranous urethra: 27.88-30.69 mm (mean 28.99 mm) from verumontanum to perineal membrane. The thickness of striated sphincter at membranous urethra is 4.29-6.86 mm (mean 5.56 mm) for the muscle of the anterior wall and 2.18-2.34 mm (mean 2.26 mm) for the muscle of the posterior wall. CONCLUSIONS:In this paper, we summarized the normal anatomy of urethral sphincter complex in young Chinese males with no urinary control problems.
journal_name
Int Urol Nephroljournal_title
International urology and nephrologyauthors
Wang XD,Liu S,Xiong LX,Sun PY,Wang XSdoi
10.1007/s11255-014-0686-1subject
Has Abstractpub_date
2014-08-01 00:00:00pages
1469-76issue
8eissn
0301-1623issn
1573-2584journal_volume
46pub_type
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