The Small-Carrion and Scott penile prostheses are still used but are not the only options. There are a number of different devices on the market today. Four discrete categories of prostheses — semirigid, malleable, inflatable, and hinged — are currently available. All the units listed below have been judged safe and effective by an expert group of urologic surgeons recruited by the American Medical Association to participate in the recent Diagnostic and Therapeutic Technology Assessment panel.
The original Small-Carrion prosthesis consists simply of two rigid rods.
• Penile prostheses with abdominal fluid reservoirs include the ScottAMS 700 and a similar device manufactured by the Mentor Corporation.
• The Jonas prosthesis is a sernimalleable device that depends on a network of internal silver wires to allow for some degree of flexibility.
• The OmniPhase and DuraPhase prostheses have internal cables that allow the device to bend to a flaccid state when not in use. These units are activated by adjusting the cable to produce penile rigidity. Other malleable devices like the AMS 600 and Mentor have similar designs.
• The Finney prosthesis is hinged and converts from flaccid to rigid state merely by locking the hinge in place.
• Newer inflatable prostheses like the Hydroflex and FlexiFlate have internal fluid systems and are designated as self-contained penile prostheses (SCPP). The SCPP transforms the penis from a flaccid to an erect state by manipulation of a valve implanted in the tip of the penis.

Types of Penile Prostheses
Type Name Advantages Disadvantages
Rigid Small-Carrion Permanent erection Permanent erection,
difficult to conceal,
slips out of vagina
Malleable Jonas
AMS 600
Easy to insert,
Minimal patient
education, relatively
adequate rigidity
Penis permanently
firm, penile pain,
can irritate or rupture
the urethra, numbness
of glans, failure due to
fracture of internal
Scott AMS 700
Attempts to mimic
normal erections,
adequate rigidity
Frequent mechanical
failure requiring
reoperation, surgery
complex, manual
dexterity required
Readily concealed,
adequate rigidity
Requires manual
dexterity to operate
Surgery not
complex, little
manual dexterity
required, flaccid at
rest, adequate rigidity
Does not increase
penile length or

Individual urologic surgeons may at one time or another favor one prosthesis over another. However, no single device has yet emerged as the dominant unit of choice. Each device has its own intrinsic advantages and disadvantages.  The rigid, malleable, hinged, and controlled expansion cylinder devices do not increase penis length or girth. These devices come in a variety of lengths; the urologist chooses from an inventory of prosthetic units a rod customized for each individual patient. The Scott and the comparable Mentor multicomponent inflatable penile prostheses (IPPs) both allow some increase in penile girth and rigidity without changing penis length.

Most urologists take pains to discuss this issue in detail. It is important for potential recipients to understand this preoperatively lest they harbor any illusions of acquiring significant augmentation of penile anatomy and sexual prowess. Such fantasies can never be fulfilled by any of the currently available prosthetic devices.


  1. Sukhen Chandra Roy says:

    I am in 31 years old, male and newly married. I have a problem associated with my penis is not erect properly. I went to an urologist (Andro urologist) in Bangladesh since 6 month ago.

    Doctor prescribe me as

    1.Testosterone examination is found 455 ng/dL

    2. Color Doppler study of penile blood flow – is bilateral caversonal arterial insufficient.

    Tab Rex(Anti oxidant tab)- one in a day.
    Two sex simulating tab (Herbal)- one in each tab in a day.

    Later doctor prescribe me
    Tab Forzest 20 (one tab in a day only desired period).

    Presently, my problem is slightly improved but not overcome. Doctor suggest to me to take penile silicon implants . Please give some advice to me to do regarding my problem.

    ** Please mention the approx cost of different types of penile implants.

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