Why fractures can't be shared?

Fracture recovery period can not be the same room, the same room will lead to fracture site stress, so it will affect recovery. After the same room is easy to lead to loss of essence is also easy, but also not conducive to physical recovery. Fracture within two months should be absolutely prohibited from the same room, two months later if the recovery is better can be the same room, but the action should be gentle with the frequency should not be too frequent.