Amazon got rid of most claims in a suit by a South Carolina man who alleged he broke his hip when he fell from a defective walker purchased through the online site.

Thomas Hughes was using a Hugo Elite rolling walker with a built-in seat, manufactured by Medical Depot Inc. and AMG Medical Inc., while visiting a museum in Georgia.

The frame snapped when Hughes sat on the walker, causing him to land on his right hip and strike his head on the floor, he said. He ultimately required surgery and inpatient rehabilitation.

Amazon.com Services Inc. won dismissal of Hughes’s...