‘Abnormal’ can means that shouldn’t be there (or at least not that much) and/or that it’s tougher. So yes, it’s the same than ‘fibrous plaque’ for our pourposes.
So, if you feel a cord at the centre of your penis, running from the base to the top, than I would think to abnormal deposition of collagenous tissue in the intracorporal septum, as shown in the figure previously uploaded.
Dorsal tunica is tougher than ventral tunica - nothing abnormal in that. Actually, most of penises have a slight upward curvature when at maximum erection : I can remember I had that when I was young. Becoming older, hardly you experience such hard erections, so this tends to disappear - that’s what happened to my penis. :)
PEing straigthened even more that curvature. So ‘dorsal thickening’ isn’t a ‘limiting factor’ for most of people.
Not denying that your dorsal tunica could be so tough that prevents PE gains. Look this for example:
"ULTRASTRUCTURE OF THE TUNICA ALBUGINEA IN CONGENITAL PENILE CURVATURE
We investigated the ultrastructure of the tunica albuginea in individuals with congenital penile curvature to explain the pathology of this disease.
Materials and Methods
Included in our study were 15 patients 17 to 24 years old with congenital penile curvature. Study material consisted of samples of the tunica albuginea excised from the greater curvature of the corpus cavernosum during surgical correction. Control samples were obtained from the lesser curvature on the side opposite the study material during the same operation. The 2 types of tissue were analyzed using transmitter electron microscopy.
Results
Ultrastructural examination of the control material revealed numerous collagen fibers that were homogenous in size and organization on cross section. Periodic striation was typical in collagen that produced fibers. In the study group the tunica albuginea structure had a chaotic pattern of collagen fibers that formed bundles with disrupted 3-dimensional organization. Diameter of the fibers differed greatly on cross section. We observed periodic widening and fragmentation of collagen fibers with the complete disappearance of striation and transformation into electron dense, fibrous granulated material. Disrupted fibroblasts without cell membrane and cellular organelles between collagen fibers were also visible. There was elastin accumulation without any morphological differences in the control and study groups.
Conclusions
Our results show that ultrastructural changes in the tunica albuginea may cause congenital penile curvature, possibly by altering mechanical properties."
Abnormal thickening
The point is: it will not feel ‘as a cord or a tendon’ etc. etc.. It seems to me MM is referring to something else than you.
Resuming:
a)if you have ‘a limiting factor’, than it is probably due to abnormal collagenous tissue;
b)if you feel as a cord runnig along your whole shaft, in the middle, I think this collagenous tissue will be located in the intracorporal septum;
c)you can realistically think that you have ‘a limiting factor’ if there is an accentuated curve in your penis and/or if your BPEL > BPFSL.
Otherwise, we are putting in mind of all lazy PErs or hypocondriacs that they have ‘a limiting factor’. :)
Does this makes any sense?