The Studies On Applied Anatomy Of Transuretheral Resection Of Prostate

Objective To provide theoretical morphology guidance of the prostatic urethra andaccurate electric cutting range for transuretheral resection of prostate（TURP）byobserving the normal adult male and patients with benign prostatic hyperplasia (BPH)urethral endoscope form characteristics and anatomic features and looking for theright anatomy signs.Methods The posterior urethral lengths of30normal adult male and50cases ofⅠ.Ⅱ.BPH,30cases Ⅲ.BPH patients were measured respectively and theirmorphological characteristics were observed under the urethroscope. All the datawere analyzed by statistics software SPSS19.0. The measurement data were shownas means±standard deviation（x|-±S）. Single factor analysis of variance test wasapplied when we compared the patients with the control group in6point locationposterior urethral length and the distance between two points. In addition, we usedcorrelation analysis between variables.The inspection standard was alpha=0.05.Results1.The arcuate mucosal folds between the colliculus seminalis and the proximalmembranous urethra in the BPH patients were annular. The two leave-crack-shapedtops of the prostate were ranging from11to1o ’clock point. The colliculus seminalisconvexed to the urethra with the hyperplasia degree of prostates.2. The superior-inferior caliber at the prostatic part of urethra, the distancebetween the peak point of vesical neck and the colliculus seminalis, the distancebetween the colliculus seminalis and the proximal membranous urethra of normaladult group, I.Ⅱ. BPH group and III.BPH groups were the following:3.93±0.40cm,4.73±0.33cm,1.31±0.23cm;5.05±0.21cm,6.02±0.26cm,1.21±0.16cm;5.20±0.28cm,6.91±0.34cm,0.98±0.13cm. The data sent value were statisticallysignificant meaning (P <0.01).3. The superior-inferior caliber at the prostatic part of urethra and the distance negatively correlated(r=-0.619, P<0.01); the superior-inferior caliber at the prostaticpart of urethra and the peak point ofvesical neck and the colliculus seminalis distancewas positively correlated(r=0.892, P<0.01); the distance between the peak pointofvesical neck and the colliculus seminalis and the colliculus seminalis and theproximal membranous urethra distance was negatively correlated(r=-0.687, P<0.01).Conclusions1. The two leave-crack-shaped tops of the prostate were ranging from11to1o’clock point.2. With the aggravation of patients with benign prostate hyperplasia thesuperior-inferior caliber at the prostatic part of urethra, the distance between the peakpoint of vesical neck and the colliculus seminalis gradually extended.3.With the increase of degree of benign prostatic hyperplasia, the distancesbetween the colliculus seminalis and the proximal membranous urethra were shorterthan the healthy ones since the former one was compressed and moved down.4.The colliculus seminalis is a distal urethral boundary between two parts of theprostatic urethra. With the increasing degree of hyperplasia prostate, the colliculusseminalis convexed to the urethra.