Page 210 - Manual of Equine Field Surgery

CHAPTER 37

Penile Amputation

Joanne Kramer

nosum penis surrounded by the tunica albuginea
INDICATIONS is the largest vascular space. The primary blood

vessels ( the dorsal arteries and veins of the penis)

Neoplastic lesions (primarily squamous cell carci- encountered in penile amputation are on the

noma) and other masses involving the shaft of the dorsal aspect of the penis between the deep fascia

penis (Figure 3 7-1), permanent penile paralysis, and the tunica albuginea. The veins on the dorsal

paraphimosis, or priapism. aspect of the penis and the cross-sectional

anatomy of the penis are shown in Figure 37-2.

EQUIPMENT

PROCEDURE

A tourniquet and urinary catheter are required for

this procedure. William's technique is commonly used and is well

1
described. A triangular skin incision is made on

POSITIONING AND PREPARATION

The horse is positioned in dorsal recumbency

under general anesthesia. The penis is extended

and maintained in extension using gauze or

umbilical tape around the glans. The penis,

prept1ce, and caudal abdomen in the area where

the penis is extended should be prepared for

aseptic surgery. A urinary catheter is placed before

surgery to facilitate identification of the urethra

during surgery.

ANATOMY

The urethra is located on the most ventral aspect

of the penis and palpable if a urinary catheter has

been placed. The urethra is surrounded by the Figure 37-1 Extensive melanoma on the distal shaft

corpus spongiosum penis. The corpus caver- of the penis.

206