I don’t know if these can help:
“The suspensory ligament of the penis: an anatomic and radiologic description.
Hoznek A1, Rahmouni A, Abbou C, Delmas V, Colombel M.
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Abstract
The suspensory system of the penis acquires clinical importance in reparative surgery, traumatology and through its role in erection. The aim of this study was to identify the different anatomic structures constituting the suspensory ligament by dissection and by magnetic resonance imaging (MRI). Ten unembalmed male subjects were used for dissection of the region of the base of the penis. Ten volunteer patients underwent MRI of the penis before and after the injection of prostaglandin (PGE1). The suspensory apparatus consisted of separate ligamentous structures: the fundiform ligament, which is lateral, superficial and not adherent to the tunica albuginea of the corpora cavernosa; the suspensory ligament properly so-called, further back, stretching between the pubis and the tunica albuginea of the corpora cavernosa and consisting of two lateral, circumferential, and one median bundles, which circumscribed the dorsal vein of the penis.
These structures were identifiable in MRI and their supporting role was evidenced during tests of erection. The suspensory ligament seemed to maintain the base of the penis in front of the pubis and to behave as a major point of support for the mobile portion of the penis during erection.”
The suspensory ligament of the penis: an anatomic and radiologic description
“Urol Clin North Am. 1995 Nov;22(4):887-902.
Augmentation phalloplasty.
Alter GJ.
Author information
Abstract
Aesthetic procedures can increase the girth and visual length of the penis. Dermal-fat grafts increase penile circumference without the complications that result from fat injections.
Release of the suspensory ligaments with skin advancement may increase flaccid penile length. Suprapubic lipectomy and Z-plasty of a penoscrotal web enhance penile appearance. Accurate diagnosis and meticulous technique are mandatory.”
I don’t think pics are a bad idea, after all, so here another one, which, like a previous before, illustrates why the idea of gaining erect length throught penis cut is wrong: in normal males, the penis is straight while erect.
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