References & sources
Educational content draws on peer-reviewed literature and society guidelines, including AUA (American Urological Association), EAU (European Association of Urology), ISSM (International Society for Sexual Medicine), and NIH / NIDDK resources.
→ Himplant® manufacturer-stated facts & citations (himplant.com)
Sources & Medical Literature (Updated June 2026)
This is an independent editorial guide. Key statistics and claims are based on peer-reviewed studies, official FDA documents, and verified third-party sources. We encourage you to review them directly.
- FDA 510(k) clearance — Himplant® (formerly Penuma)
Search the FDA AccessData 510(k) database, or visit himplant.com for the official manufacturer summary.
- Clinical girth enhancement data — The Journal of Sexual Medicine
Published series reporting ~56% average midshaft circumference increase after subcutaneous silicone implant.
- Long-term satisfaction & function — International Journal of Impotence Research
Multi-year urological outcomes reporting 70–80%+ 'high' or 'very high' satisfaction with preserved erectile, urinary, and sensory function.
Source hierarchy used for editorial decisions
Claims on this site are prioritized against specialty society guidelines first, then regulatory authorities, then trusted institutional references, and finally primary literature. When sources disagree, we surface the disagreement instead of choosing for the reader.
Tier 1 — Specialty society guidelines
AUA — American Urological Association
Clinical guidelines: erectile dysfunction, Peyronie's disease, testosterone therapy, male infertility.
EAU — European Association of Urology
International guideline counterpart used for cross-validation.
ISSM — International Society for Sexual Medicine
Sexual medicine guidelines: premature ejaculation, hypoactive sexual desire, ED.
SMSNA — Sexual Medicine Society of North America
Position statements and practice guidance on men's sexual health.
Tier 2 — Regulatory & device authority
FDA — U.S. Food & Drug Administration
Regulatory clearance status of devices and drugs (e.g., penile prosthesis 510(k)).
Tier 3 — Trusted patient-facing institutional references
Mayo Clinic
Plain-language clinician-reviewed condition overviews.
Cleveland Clinic
Patient-oriented disease-state explainers.
Tier 4 — Primary literature
PubMed / peer-reviewed journals
Original studies and meta-analyses used to support specific claims.