Test on Flexor Tendon Injuries of the Hand

Question 1: When the profundus mass of the long, ring, and little fingers is chosen as a common motor during flexor tendon reconstruction, an interweave juncture is created to their common origin.

A. Ano

B. Ne

Explanation: In cases where the profundus mass of the long, ring, and little fingers is chosen as a common motor, an interweave juncture is created to the common origin of these tendons.

Question 2: According to the study materials, if the proximal juncture for a flexor tendon reconstruction is located in the forearm, which of the following tendons are considered suitable for use as a graft?

A. Plantaris

B. Palmaris longus

C. FDP tendon

D. Toe extensor

Explanation: The study materials state that if the proximal juncture is in the forearm, the palmaris longus is not long enough, and either the plantaris or a toe extensor must be used. The FDP tendon is noted as not long enough for use as a forearm-to-tip graft, which would include the forearm proximal juncture.

Question 3: For secondary reconstruction of flexor tendon injuries in zones 3, 4, and 5, direct end-to-end repairs are not possible if synovial connections and adhesions have prevented proximal migration of the tendons.

A. Ano

B. Ne

Explanation: The study materials state that direct end-to-end repairs can be performed if synovial connections and adhesions have prevented proximal migration of the tendons.

Question 4: Which of the following statements accurately describe the Flexor Digitorum Superficialis (FDS) transfer technique for flexor tendon reconstruction?

A. It is primarily used to bridge gaps of 2 to 5 cm in the forearm.

B. The FDS tendon is passed deep to the neurovascular bundle or median nerve.

C. The technique can involve sacrificing the A1 pulley if the juncture lies beneath it when the finger is extended.

D. It is generally recommended over a palm-to-fingertip tendon graft if applicable.

Explanation: The study materials state that the FDS transfer technique is used to overcome gaps at the palm or wrist level, not specifically the forearm. The FDS tendon is passed deep to the neurovascular bundle or median nerve and sewn to the distal segment of the injured tendon. The A1 pulley can be sacrificed if the juncture is found beneath it in extension, converting a zone 2 injury to a more favorable zone 3. Lastly, if this method is possible, it is recommended over a palm-to-fingertip tendon graft.

Question 5: The clinical superiority of intrasynovial toe flexor grafts compared to extrasynovial grafts has been demonstrated.

A. Ano

B. Ne

Explanation: The study materials indicate that while intrasynovial toe flexor grafts heal with fewer adhesions in animal models compared with extrasynovial grafts, their clinical superiority has not been shown to date.