A 4‐crank orthopedic bed is a manual adjustable hospital/medical bed that uses four separate hand cranks to change different parts of the bed’s position without electricity.
Each crank typically controls one of the following:
Backrest (head elevation) – raises or lowers the upper body section.
Leg rest (knee/foot elevation) – supports leg positioning for comfort or circulation.
Height adjustment – raises or lowers the entire bed for caregiver ergonomics