Reviewed by the Clinical Team at London Andrology · Last reviewed: 2026 (confirm reviewer name & date).
It is one of the most commonly searched questions in men’s health — and one of the most misunderstood. If you’ve been looking into how to increase penis size, how to get a bigger penis, or whether penile lengthening surgery is worth it, this guide gives you a clinically accurate, honest answer.
The short version: some surgical procedures can change how the penis looks, but genuinely increasing erect length is biologically more complex than most people — and many online sources — acknowledge. Here’s what the evidence actually shows.
Why increasing erect penis length is harder than it sounds
To understand the limits of surgery, it helps to understand what determines erect length. Erect length is governed mainly by the size and elasticity of the two corpora cavernosa — the paired erectile chambers that run the length of the shaft. During an erection these fill with blood and expand to their anatomical maximum, which is set by:
- The internal length of the erectile tissue
- The elasticity of the tunica albuginea (the fibrous sheath around the corpora)
- Individual anatomical variation established in development
Critically, these structures are fixed in adulthood. Releasing the ligaments that anchor the penis to the pubic bone — the most common penile lengthening surgery — does not add erectile tissue, expand the chambers, or change their maximum fill capacity. This is why men searching for “how to grow your penis” are frequently disappointed by what surgery can actually deliver.
The most common penile lengthening surgery: suspensory ligament release
The procedure most often marketed as penile lengthening is suspensory ligament release (ligamentolysis). It divides the ligament that anchors the base of the penis to the pubic bone, letting more of the internal shaft hang forward.
What it can achieve:
- An increase in flaccid (non-erect) visible length — typically around 1–2 cm; results vary with anatomy
- A change in the resting angle of the penis
What it cannot achieve:
- A reliable, meaningful increase in erect length
- Expansion of the erectile chambers
Some men perceive a minor change in erect length because the shaft now begins further from the pubic bone, but the erectile tissue is unchanged — the penis looks longer at rest, while the erection is generally no longer than before. (For a deeper explanation, see why lengthening surgery increases flaccid, not erect, length, and partial vs full ligamentolysis.)
Important clinical note: suspensory ligament release carries specific risks, including altered erection angle, instability during intercourse, and suboptimal cosmetic outcomes if post-operative traction is not maintained. Patient selection is critical.
Procedures that can restore length in specific medical conditions
While cosmetic lengthening is limited, certain reconstructive procedures can meaningfully improve erect length in men who have lost length to disease or injury.
1. Tunical expansion surgery (for Peyronie’s disease)
Peyronie’s disease causes fibrotic plaque within the tunica albuginea, leading to curvature, deformity and often shortening. Surgical grafting — incising the restrictive scar tissue and placing a graft — can correct curvature, restore some lost erect length, and improve function. These are reconstructive procedures for a defined condition, not cosmetic enhancement, and carry risks including reduced erectile rigidity.¹
2. Penile prosthesis with length-restoration techniques
In men with severe erectile dysfunction who need a penile implant, surgeons can sometimes add length-restoration manoeuvres during prosthesis placement. These are advanced techniques for complex reconstructive cases — not for men with normal erectile function seeking cosmetic enlargement.
So why can’t surgeons simply lengthen the erectile tissue?
The structures responsible for erection — the cavernosal arteries, the cavernous nerves and the erectile tissue — are highly specialised and delicate. Attempting to extend or enlarge them in a healthy man risks damage to the arterial blood supply (erectile dysfunction), nerve injury (reduced sensation or function) and structural compromise (weaker erections). The risk-to-benefit ratio for aggressive cosmetic lengthening in men with normal anatomy is unfavourable, which is why responsible andrological practice does not pursue it. Preserving erectile function is always the priority.
Non-surgical options: what actually has evidence
If you’re looking for how to make your penis bigger without surgery, the most evidence-supported non-surgical option for length is penile traction therapy.
Penile traction therapy
Traction devices apply a calibrated stretching force to the flaccid penis over extended periods (typically 4–6 hours a day across several months). Peer-reviewed studies show modest but measurable gains:
- Mean erect-length increases of about 1.0–2.5 cm in some studies with consistent, prolonged use²
- Tissue remodelling through cellular adaptation (similar in principle to orthodontic treatment)
- A low risk profile when using a medically approved device
Traction is also used after ligament release to consolidate gains and maintain the new resting position. What it won’t do: produce dramatic changes quickly, or work without daily commitment. For modest non-surgical length improvement, it is the most defensible option in the literature, and our team can guide you on appropriate devices and protocols.
What about “penismaxxing” and “dickmaxxing”?
Online communities around penismaxxing and dickmaxxing discuss everything from traction and jelqing to supplements, pumps and extreme routines. Most lack credible evidence, and some carry real risk — scarring, erectile dysfunction and permanent deformity from aggressive manual techniques or unregulated devices. The methods that do have evidence (traction, and in appropriate patients, specific surgery) are exactly those available through clinical andrology. A consultation is a far safer starting point than self-experimentation.
Penis girth enhancement: a different question
It’s worth separating length from girth, because the picture is different. While reliable erect-length increase is challenging, girth (circumference) enhancement via hyaluronic acid penile fillers is a well-established, minimally invasive procedure with immediate visible results, typical increases of 1.5–3.0 cm in circumference, reversibility (using hyaluronidase), and patient-satisfaction rates consistently above 75–80% in published studies.³ Many men find girth improvement addresses their concerns more effectively than length. See our guides on how penile fillers look and feel and penis girth enhancement.
What each option realistically offers
- Suspensory ligament release: improves flaccid length (~1–2 cm); little reliable change to erect length; best combined with post-op traction.
- Reconstructive surgery (Peyronie’s / prosthesis): can restore length lost to disease in selected patients; not cosmetic.
- Penile traction therapy: modest erect-length gains (~1–2.5 cm) with months of daily use; best evidence for non-surgical length.
HA penile fillers: immediate, visible girth increase (~1.5–3 cm circumference); reversible; high satisfaction.
Frequently asked questions
Can surgery genuinely make your penis longer when erect?
For men with normal anatomy, surgery rarely produces a reliable, meaningful increase in erect length. Suspensory ligament release improves flaccid appearance but does not expand the erectile chambers. Reconstructive surgery can restore length lost to disease, but is not appropriate as a cosmetic procedure in healthy men.
What is the safest way to try to increase penis length?
Penile traction therapy using a medically approved device is the safest non-invasive option with some clinical evidence behind it. Results are modest and require sustained daily use over months.
How long does penile lengthening surgery take to recover from?
Suspensory ligament release typically involves 2–4 weeks of restricted activity, followed by a course of traction therapy that may continue for several months. Full results take time to assess.
Does suspensory ligament release affect erectile function?
Performed correctly it does not directly affect the erectile tissue or its blood supply, but it can change the angle and stability of the erection, which some men find takes adjustment. Risks increase with inexperienced surgeons.
Is penis enlargement surgery available on the NHS?
Purely cosmetic penile lengthening is not available on the NHS. Reconstructive procedures for conditions such as Peyronie’s disease may be considered in specific circumstances.
How can I speak to someone about this?
You can book a free phone call with our team, or message us on WhatsApp at +44 7457 404374 — whichever is easier. Everything is handled discreetly.
Why see a specialist andrologist?
Penile enhancement is an area with a lot of misinformation, and some providers without appropriate surgical training offer procedures that carry substantial risk. London Andrology is a specialist clinic with dedicated expertise in male genital surgery, sexual medicine and andrology. We will always tell you honestly what is and isn’t achievable — our priority is your long-term health and function, not simply performing a procedure.
References
- Levine LA, Burnett AL. Standard operating procedures for Peyronie’s disease. J Sex Med. 2013;10(1):230–244.
- Gontero P, et al. A pilot phase-II study of a penile-extender device in the treatment of ‘short penis’. BJU Int. 2009;103(6):793–797.
- Sokolakis I, Hatzichristodoulou G. Clinical studies on dermal fillers for penile augmentation: a systematic review. 2020;8(3):624–635.
This article is for educational purposes only and does not constitute personal medical advice. All treatment decisions should follow consultation with a qualified professional.
