Dr. Rock Positano of the Hospital for Special Surgery says new research indicates wearing footwear that does not offer proper arch support can cause possible long-term problems, ABC News reported Friday.
"It may feel cushiony; it may feel comfortable, but it doesn't mean they're getting the necessary arch support that a foot needs to function effectively," Positano said of UGG boots.
"What that leads to is overuse, meaning the muscles, the tendons, the ligaments, and the bones in the foot and the ankle overwork.
"A recent study just came out that showed the correlation between a flat arch, and problems with the knee, the hip, and the back."
However, an unidentified spokeswoman for the UGG Australian boot company said it has not received a single complaint regarding insufficient arch support in the last 30 years, the Chicago Sun-Times reported Saturday.