KRASNAYA POLYANA, Russia — Sarka Pancochova, a Czech snowboarder, led the slopestyle event after the first run. On her second trip down the course of obstacles and jumps, she flew through the air, performed a high-arcing, spinning trick and smacked her head upon landing. Her limp body spun like a propeller into the gully between jumps and slid to a stop.

Pancochova was soon on her feet, and the uneasy crowd cheered. Her helmet was cracked nearly in half, back to front.

She was one of the lucky ones, seemingly O.K., but her crash last week was indicative of a bigger issue: a messy collage of violent wipeouts at these Olympics. Most of the accidents have occurred at the Rosa Khutor Extreme Park, the site of the snowboarding and freestyle skiing events like halfpipe, slopestyle and moguls.

And most of the injuries have been sustained by women.

Through Monday night, a review of the events at the Extreme Park counted at least 22 accidents that forced athletes out of the competition or, if on their final run, required medical attention. Of those, 16 involved women. The proportion of injuries to women is greater than it appears given that the men’s fields are generally larger.