Fat transfer or fillers for penis enlargement - are there disadvantages to either procedure?

I have written a few papers about penis enlargement, augmentation phalloplasty, and evidence-based outcomes. Safety is always the priority.
Penis enlargement surgery can offer modest improvements in both length and girth, but there are risks and limitations that should be carefully considered. Always go to an experienced provider. Complications can be devastating.
Lengthening Surgery: The most common method involves cutting the suspensory ligament that attaches the penis to the pubic bone, which can result in an increase of about 1 inch in flaccid length. However, this may not significantly affect erect length. Additionally, some men experience a "drooping" effect where the penis no longer rises in erection, but instead points downward.
Girth Enhancement: This can be achieved through fat grafting (using the patient’s own fat) or the insertion of dermal fillers or collagen-based materials. These techniques can add circumference, though fat grafts may have issues with uneven absorption, and synthetic fillers can lead to complications like infection, ulceration, or extrusion. The use of Alloderm (a type of cadaveric tissue) has been controversial due to risks of tissue reabsorption or complications.
Minimally Invasive Alternatives: Non-surgical treatments, like platelet-rich plasma (PRP) injections or fillers, are also options for improving penis girth and overall appearance. These methods generally have shorter recovery times and lower complication risks compared to surgery.
While surgery can lead to some visible improvements, the results may not meet all expectations, and the risks of complications are significant. For those seeking a modest increase in size, non-surgical options may offer safer alternatives. Consulting with an experienced surgeon is essential to determine the best course of action.
Krishna Vyas, MD, PhD, MHSHarvard, Hopkins, & Mayo Clinic Trained Aesthetic Plastic SurgeonNew York, New York

Fillers are temporary and move around and cannot cost effectively provide the same size increase. Fat transfer is permanent, looks more natural, and costs less for same volume while being a permanent solution. Fat transfer can be performed under local anesthesia, so there is really very little role for filler injections into the penis.

Each procedure has its benefits and its drawbacks. Both have similar side effect profile. One major difference between the two is, Fat can be reabsorbed partially or totally . Whatever remains approximately after 3 months will last for years. Fillers will last anywhere from a few months to 2 to 5 years depending on what kind of filler is used