WEDNESDAY, April 26, 2017 (HealthDay News) -- One reason women are more likely than men to have complications after hip or knee replacement surgery may be because they're more sensitive to the metals in joint implants, a new study suggests.

Researchers reviewed the cases of more than 2,600 patients who were evaluated for unexplained pain after total hip and/or knee replacement. All had metal implants. None had signs of infection, inflammation or other conditions that would explain their pain.

Sixty percent of the patients were women. They had higher average pain scores than men -- 6.8 vs.