About 103,000 Chinese-made Razor scooters are being recalled.
The move comes after four people have received cuts on the scooters that required tendon surgery.
The Consumer Product Safety Commission says some of the company's PowerWing three-wheeled scooters have sharp edges on the bottom of the platforms where riders place their feet.
The importer of the scooters, Razor USA, has received 10 reports of the platform cutting users on the ankle or the Achilles tendon. Four of them needed tendon surgery and three needed stitches.
Razor has also recalled about 30,000 Chinese-made Dirt Quad electric-powered, ride-on vehicles because the throttle controls can fail and cause the vehicles to surge forward unexpectedly. Two people are reported to have been hurt on the vehicles.
More information is available at http://www.razor.com/recall or http://www.cpsc.gov.