1.1 Introduction. Cost is important to all industry. Costs can be divided into two general classes; absolute costs and relative costs. Absolute cost measures the loss in value of assets. Relative cost involves a comparison between the chosen course of action and the course of action that was rejected.
Trigger finger is a painful condition of the tendon and pulley system of the hand, and is medically known as stenosing tenosynovitis. Triggering can cause a finger to catch or lock in either a bent or extended position. When a triggering finger is forcibly flexed or extended a âsnapâ is sometimes felt.
Flexor tendons of the thumb and fingers pull the fingers into a fist. The tendons are enclosed in a synovial sheath. When this sheath becomes inflammed it is called trigger finger. Usually, tendons slide easily through the sheath as the finger moves. In the case of trigger finger, the synovial sheath is swollen. The tendon cannot move easily. This causes the finger to remain in a flexed (bent) position.