Hi, thanks for writing to HCM. Though there are many causes and conditions that produce hard and shiny legs, I suspect a Vascular compromise (possibly Venous thrombosis) in your case, as it has happened after a lower abdomen surgery. A doppler ultrasound examination of the legs will rule out the presence/absence of venous thrombosis. A detailed clinical examination is needed to arrive at a correct diagnosis. I suggest you to consult a physician (without any delay) for further evaluation and management. Hope this information is helpful. Good luck