Penile traction devices, sometimes called penile extenders or stretchers, are mechanical devices designed to apply gentle, continuous stretching force (“traction”) to the penis over extended periods. Their typical design involves a plastic ring that fits against the base of the penis, a second ring that fits below the glans (head), and adjustable rods that provide tension.
Manufacturers claim that regular use can increase penile length and/or girth over time. They are marketed both as non-surgical alternatives to penis enlargement and as therapies for penile curvature (Peyronie’s disease). Feeling Embarrassed About Size In Intimate Moments? Here's What I Recommend You Do...
Scientific Evidence
- Most well-designed clinical trials assessing traction devices have been small and relatively short-term.
- A systematic review published in the British Journal of Urology International (BJUI, 2011) found that some studies showed modest increases in erect penile length (typically 0.5–2.5 cm) after several months of daily use, but the quality of evidence was low.
- A 2020 meta-analysis concluded that while increases in flaccid and stretched length may be observed, changes in erect length are smaller and often not significant.
- No device is proven to increase penis girth reliably.
Key Facts
- Typical results: In studies, men who used these devices for 4-6+ hours/day, for 3-6 months, sometimes achieved average increases of 0.5–2 cm (about 0.2–0.8 inches) in stretched or flaccid length. Erect length gains are generally smaller and may not be clinically significant.
- No overnight results: Gains, if any, occur only after months of regular, prolonged use. Have Failed Penis Enlargement Attempts Left You Discouraged? Here's to Enlargement Techniques that Really Work!
Scientific Evidence
- Several small studies suggest that traction therapy can help improve curvature, penile length, and even erectile function in men with Peyronie’s disease.
- The American Urological Association and other expert groups recognize traction therapy as a possible non-surgical option, but efficacy varies widely and results are often modest.
Penile traction is generally considered non-invasive, but it is not risk-free.
- Discomfort/Pain: Most men experience some degree of discomfort, especially initially or if too much tension is applied.
- Skin Irritation: Prolonged contact and friction with device components may cause redness, blistering, or abrasions.
- Numbness: Temporary loss of sensation can occur due to nerve compression.
- Swelling (“Edema”): Localized swelling at the glans or shaft is fairly common.
- Bruising: Can occur, particularly with improper use.
- Circulatory Problems: Excessive force or prolonged use might impede blood flow, potentially causing tissue damage.
- Permanent Injury: Improper use (excessive force, over-tightening, ignoring pain) may lead to scarring or permanent damage.
- Usability and Compliance: Many men discontinue use due to discomfort, inconvenience, or lack of results.
- Always follow manufacturer instructions closely.
- Start with minimal traction and duration; increase gradually as tolerated.
- Discontinue use at the first sign of pain, numbness, or skin breakdown.
- If you have underlying penile abnormalities or erectile issues, consult a healthcare provider before use.
- Modest, Not Dramatic Results: Some men may see a small increase in flaccid or stretched length after several months of dedicated use, but gains in erect length are often minimal.
- Highly Variable: Response is unpredictable, and some may see no meaningful change.
- No proven effect on girth.
- Risks exist: While usually mild, side effects are common and can include pain, irritation, and rare but serious injury.
- Better Evidence for Peyronie’s Disease: Traction may provide some benefit for men with penile curvature, but not all will respond. Frustrated by Lack of Results from Enlargement Methods? Here's to Real Results from Real Users!
If you are considering a penile extender, discuss it with a qualified healthcare provider, especially if you have Peyronie’s disease or significant concern about penis size. Many men who are worried about their penis size have completely normal anatomy and may benefit most from reassurance and counseling.
Key Takeaways:
- Traction devices may offer modest penile length gains with months of consistent, dedicated use.
- Risks include pain, irritation, and rare but serious injuries if misused.
- No device is proven to safely or significantly enlarge the penis for all users.
- For most men, addressing body image, relationship communication, and sexual confidence is likely to provide greater satisfaction.
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1. Ralph D, et al. “Systematic Review of Penile Traction Therapy for Peyronie's Disease and Penile Lengthening.” BJUI, 2011.
2. Chung E, et al. “Penile traction therapy and vacuum erection devices: a review of the literature.” World J Mens Health, 2019.
3. AUA Guideline: Peyronie’s Disease, American Urological Association, 2020.