Is it safe to perform knee to chest exercise 3 months after l4l5 microd with hemilaminotomy?

Probably: As always, consult with your operating surgeon as each of us has a preference as to how we manage patients. However, for my patients, if otherwise uncomplicated microdisk, i allow resumption of normal function after 6 weeks when pain is gone completely. Early bending/twisting/straining before the disc scars closed could lead to recurrent disk herniation.