"With aging, the number one challenge is what if people lose their mobility when they fall, have fractured bones, and then they can potentially become dependent," Wan said, adding that one in three patients with a hip fracture dies within 12 months.

"So we're working with partners to promote prevention ahead of treatment of a hip fracture.

The institute in Beijing currently includes three unique VR training modules for orthopedic surgery - total knee replacement, total hip replacement with direct anterior approach and hip fracture treatment with a proximal femoral nail - where doctors can simulate operations with the help of VR technology.

"The 5.56-kilometer tunnel runs through four fracture zones, and the stability of surrounding rocks is poor.

Xia and his team tackled technological problems such as earth settlement and active fracture zones.

It plans to activate 45 drill rigs to drill 100 wells and fracture 55 wells within this year, including 43 new wells, the company said.

The front axle lower trailing arms may not have been forged to specification, said the statement, adding that the trailing arms could fracture and fail in extreme cases.

The automaker said the vehicle's rear driveshaft may fracture, causing it to lose power while in motion or move in ways the driver does not expect.

In extreme conditions, it may lead to the fracture of the buckle, thus posing threats to the safety of the passengers.

Strong external forces may damage and deform the front shock absorber of the affected models, with fracture possible under extreme conditions, which is a potential safety concern, the statement said.

The front passenger airbags, produced by Japanese manufacturer Takata, have defective inflators that could fracture and cause injuries, the administration said.

The front passenger airbags, produced by Japanese manufacturer Takata, have defective inflators that could fracture and send potentially fatal shrapnel into passengers when airbags are activated, the administration said.

The airbags for the passenger seats, produced by Japanese manufacturer Takata, have defective inflators that can fracture and send potentially fatal shrapnel into passengers when airbags are deployed, the administration said.