This allows urine to be expelled earlier in its course so that passage through
the os penis does not occur.
In the male dog, a bone called the «
os penis» is located in the penis, surrounding the urethra.
The flexibility of the non-bony part of the urethra plus the surgically enlarged urinary opening allows for smaller stones to pass rather than stick in
the os penis.
This structure is called
the os penis.
The white line outlines the urethra as it passes from the bladder, goes over the ischial arch and through
the os penis.
The arrow points to the beginning of
the os penis, the area where a stone would lodge.
This is the stone that was originally stuck behind
the os penis, and flushed back into the bladder.
Common areas for these urethral obstructions are the ischial arch near the pelvis and further down the urethra at
the os penis.
In male dogs, a bone called the «
os penis» is located in the penis, surrounding the urethra.
He may have stones obstructing his urethra (the passage way for urine in the male dog goes through an actual bone called the «
os penis» and stones often catch at this location).
Radiograph of
an os penis Small black dots are tiny uric acid stones surrounded by urinary dye.
Subjectively, the prepuce and
os penis of the group - I males were immature, compared with those of group - II and group - III males.
The testes and penis are small, calcification of
the os penis is delayed or incomplete, and the penile sheath is flaccid.
The most common crisis situation is a male dog with a stone present in its bladder that is just small enough to enter its ureter but not small enough to pass through the narrow portion surrounded by
its os penis.