Our data shows it's not necessary to ask patients to lose weight prior to surgery," said Wenjun Li. "It's challenging for a patient who is severely overweight and suffering in pain to exercise -- often they just can't do it. We know showed that severe morbidly obese patients can benefit almost equally as normal weight patients in pain relief and gains in physical function."

Our data shows it's not necessary to ask patients to lose weight prior to surgery," said Wenjun Li. "It's challenging for a patient who is severely overweight and suffering in pain to exercise -- often they just can't do it. We know showed that severe morbidly obese patients can benefit almost equally as normal weight patients in pain relief and gains in physical function."

Our data shows it's not necessary to ask patients to lose weight prior to surgery," said Wenjun Li. "It's challenging for a patient who is severely overweight and suffering in pain to exercise -- often they just can't do it. We know showed that severe morbidly obese patients can benefit almost equally as normal weight patients in pain relief and gains in physical function."