Flexor Digitorum Profundus Rupture

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Flexor Digitorum Profundus Rupture

The flexor digitorum profundus (FDP) is a muscle attached to a bone (ulna) in the forearm. The FDP muscle helps to bend the four fingers of the hand. The FDP works together with bands of fibrous tissue (tendons) that attach to the finger joints. The tendons start at the wrist and cross the palm, and then spread out to the fingers. A tear (rupture) in the FDP means that a tendon has been separated from a finger joint. If this happens, you will not be able to bend the injured finger.
An FDP rupture may occur in one or more fingers. It is most common in the ring finger. There are three types of FDP ruptures:
• Type I causes the tip of the tendon to draw back (retract) into the palm.
• Type II causes the tip of the tendon
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○ Do not take baths, swim, or use a hot tub until your health care provider approves. Ask your health care provider if you can take showers. You may only be allowed to take sponge baths for bathing.
○ If your splint is not waterproof, cover it with a watertight plastic bag when you take a bath or shower.
• Keep the splint clean.
Managing Pain, Stiffness, and Swelling
• If directed, apply ice to the injured area.
○ Put ice in a plastic bag.
○ Place a towel between your splint and the bag.
○ Leave the ice on for 20 minutes, 2–3 times per day.
• Move your fingers often to avoid stiffness and to lessen swelling.
• Elevate your injured hand while you are sitting or lying down.
• Do not drive or operate heavy machinery while taking pain medicine.
• Do not drive if you have a splint on your hand.
• Return to your normal activities as told by your health care provider. Ask your health care provider what activities are safe for you.
• Do physical therapy exercises as told by your health care provider.
• Do not participate in sports activities until your health care provider approves.

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