Prof. Dr.Mohamed Hamdy Abouel-Hassan

Review c f literature
mirror-image fashion. (Differences at specific locations have been found to
be statistically significant.)
The stress on the tunica before penetration has been measured as 1.6 ± 0.2 x
10 7 N
/
m
2
at the 7-o'clock position, 3.0 ± 0.3 x 10 7 N
position, and 4.5 ± 0.5 x 10 7 N
/
m
2
/
m
2 at the 9-o'clock
at the 11-o'clock position. The strength
and thickness of the tunica correlate in a statistically significant fashion with
location. The most vulnerable area is located on the ventral groove (between
the 5- and the 7-o'clock positions), which lacks the longitudinally directed
outer-layer bundles; most prostheses tend to extrude here (Hsu et al, 1994).
Corpora Cavernosa, Corpus Spongiosum, and Glans Penis
The corpora cavernosa comprise two spongy, paired cylinders contained in
the thick envelope of the tunica albuginea. Their proximal ends, the crura,
originate at the undersurface of the puboischial rami as two separate
structures but merge under the pubic arch and remain attached up to the
glans. The septum between the two corpora c
but is complete in some species, such as the dog. The corpora c
intracavernous
avernosa
is incomplete in men
supported by a fibrous skeleton that includes the tunica albuginea, the
septum, the i
ntracavernous
pillars, the i
ntracavernous
avernosa
are
fibrous framework,
and the periarterial and perineural fibrous sheath (Goldstein and Padma-
Nathan, 1990; Hsu et al, 1992). Bitsch and coworkers (1990) believe that the
framework adds significant strength to the tunica albuginea.
Within the tunica are the interconnected sinusoids separated by smooth
muscle trabecula surrounded by elastic fibers, collagen, and loose areolar
tissue. The terminal cavernous nerves and helicine arteries are intimately
associated with the smooth muscle. Each corpus c
avernosum
is a
conglomeration of sinusoids, larger in the center and smaller in the
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