Testicles, Scrotum & Scrotal Aesthetics

Anatomy and Function of the Testicles

The testicles – medically known as testes – are paired, oval organs averaging 4 to 5 cm in length and 2.5 to 3 cm in width, located in the scrotum. They fulfil two central functions: spermatogenesis – the continuous production of sperm in the seminiferous tubules – and steroid hormone production, primarily testosterone, in what are known as the Leydig cells. Testosterone governs the development of male sex characteristics during puberty, libido, muscle and bone strength, and the maintenance of spermatogenesis itself.

Anatomically, the testicles are surrounded by a firm connective tissue capsule, the tunica albuginea, which supports and protects the internal structure of coiled seminiferous tubules. A temperature of around 34 to 35°C – slightly below core body temperature – is required for normal sperm production, which anatomically explains the extra-abdominal location within the scrotum.

The testicles develop in the retroperitoneum during embryonic development and migrate through the inguinal canal into the scrotum shortly before birth (testicular descent). A failure of the testicles to descend (cryptorchidism) must be treated early, since a misplaced position can permanently impair spermatogenesis and increases the risk of testicular tumours.

Clinically Relevant Testicular Conditions

Testicular torsion – the twisting of a testicle around its vascular pedicle, causing ischaemia – is a urological emergency that must be surgically treated within a few hours to save the testicle. Inflammation of the testicle (orchitis) or epididymis (epididymitis) presents with pain, swelling, and warmth, and is treated with antibiotics or symptomatically depending on the pathogen. A varicocele – an enlargement of the veins of the pampiniform plexus – can impair sperm quality and is a commonly found finding in male subfertility. Testicular cancer predominantly affects men between the ages of 20 and 40 and, with early diagnosis, is generally very treatable; regular self-examination by palpation is the simplest measure for early detection.

Anatomy and Function of the Scrotum

The scrotum is a musculocutaneous skin pouch with a multi-layered wall structure. The thin, elastic skin, rich in sweat glands, covers the dartos muscle, which contracts or relaxes the skin. The cremaster muscle reflexively pulls the testicles toward the body in response to cold, fright, or physical exertion. Together, both muscles regulate the distance of the testicles from the body and thereby their temperature.

The scrotum is divided into two chambers by a septum; asymmetry – often with the left testicle hanging somewhat lower than the right – is anatomically normal and not a sign of disease. The skin of the scrotum is sensitive and plays a role in sexual stimulation; the degree of contraction of the dartos muscle unconsciously reflects the state of arousal.

Scrotal Aesthetics

The outward appearance of the scrotum varies considerably between individuals – in terms of size, firmness, skin folds, hair growth, and visible vasculature. Age-related sagging, weight changes, or genetic predisposition can cause the scrotum to hang lower than desired. Many men considering a procedure in the intimate area also think about the appearance of the scrotum – not least because the penis and scrotum visually form a unit, and a harmonious relationship between the two significantly determines the overall result of an aesthetic procedure.

Aesthetic measures involving the scrotum include surgical skin tightening and reduction, laser treatment for skin smoothing or hair removal, and treatment of visible veins or pigmentation changes. During surgical consultation, it is always assessed whether an aesthetic wish can be medically justified – for example when skin laxity causes functional symptoms – or whether it is of a purely aesthetic nature.

Scrotal Lift (Scrotoplasty)

A scrotal lift is a surgical procedure in which excess skin and tissue are removed from the scrotum to improve its appearance or address functional symptoms. Medical indications include pain from pulling or friction while walking, exercising, or sitting, chronic skin irritation from intertrigo, and general functional limitations caused by a significantly sagging scrotum. In addition, some men choose the procedure for purely aesthetic reasons.

The procedure is usually performed on an outpatient basis under local anaesthesia with sedation and, if done alone, takes around 30 to 60 minutes. The surgeon marks the tissue to be removed, chooses an incision that leaves scars as inconspicuous as possible, removes the excess skin, and closes the wound edges with atraumatic sutures while preserving the natural shape of the scrotum. Combining the procedure with other treatments in the intimate area – such as penis lengthening or penis girth enhancement – is possible and can harmoniously round off the overall result.

Aftercare involves physical rest for one to two weeks; sport, sexual intercourse, and heavy physical exertion should be avoided for at least five weeks. Complications are rare with an experienced surgical technique and are generally manageable.

Relation to Penis Procedures

With penis lengthening via ligamentotomy, it can be useful to take the penoscrotal junction – the connection between the base of the penis and the scrotum – into account or adjust it, so that the lengthened penis appears visually convincing. With penis girth enhancement using lipofilling, care must be taken to ensure that the relationship between the thickened shaft and the scrotum remains harmonious. In our practice, we regard the penis and scrotum as an aesthetic and functional unit and therefore take the scrotum into account when planning treatment.