Furthermore, the erect penis won't point as high as before the operation because the ligament which was cut no longer offers support. Another method, still in its experimental stage, involves pulling back the skin of the penis to wrap a tube-like biodegradable frame filled with tissue cells around the shaft. Performinax Male enhancement Reviews Some surgical techniques to increase penis girth involve injecting fat taken from another part of the body into the penis. Some studies have reported increases in circumference of 1.4-4cm. "They're a complete waste of time," says Professor Wylie.