Finger and Hand

In this chapter we discuss injuries of the fingers. The dorsal hood centers the extensor tendons over the MCP joint and with injuries the tendon may become displaced. Flexor tendon ruptures may occur in the different hand zones but typically in the finger. Retraction may be a very severe complicating surgery. The extensor mechanism is very complex. Ruptures of the central slip may lead to boutonniere deformity and distal slip mallet finger. The palmar pulleys keep the tendons close to the bone and prevent bowstringing. The palmar plates typically tear in association with collateral ligaments due to their intimate connection. The most common tendinopathy involves the first extensor compartment and is designated De Quervain disease.