The Sweater Finger Sign indicates what pathology?

The Sweater Finger Sign indicates what pathology?

• A. Fractured scaphoid
• B. Ruptured FDP
• C. De Quervain's tenosynovitis
• D. Wrist tendonitis

Answer: (B)

The Sweater Finger Sign is indicative of a ruptured flexor digitorum profundus (FDP) tendon. This sign occurs when the patient is unable to flex the distal interphalangeal joint of a finger, leading to the appearance of a 'sweater-like' sagging of the finger during attempts to make a fist. This phenomenon is often associated with trauma to the finger, typically when a forced extension occurs while the finger is flexed. In this specific case, the ruptured FDP affects the ability to flex the distal part of the finger, and this is visually represented by how the finger fails to bend properly, resembling the loose material of a sweater. This clinical sign helps healthcare providers diagnose injuries related to the FDP tendon, leading to necessary interventions. The pathologies represented by the other options do not produce this specific inability to flex the distal interphalangeal joint in the same manner as a ruptured FDP would. This makes the Sweater Finger Sign a crucial finding in identifying tendon injuries specifically involving the flexor digitorum profundus.

The Sweater Finger Sign is indicative of a ruptured flexor digitorum profundus (FDP) tendon. This sign occurs when the patient is unable to flex the distal interphalangeal joint of a finger, leading to the appearance of a 'sweater-like' sagging of the finger during attempts to make a fist. This phenomenon is often associated with trauma to the finger, typically when a forced extension occurs while the finger is flexed.

In this specific case, the ruptured FDP affects the ability to flex the distal part of the finger, and this is visually represented by how the finger fails to bend properly, resembling the loose material of a sweater. This clinical sign helps healthcare providers diagnose injuries related to the FDP tendon, leading to necessary interventions.

The pathologies represented by the other options do not produce this specific inability to flex the distal interphalangeal joint in the same manner as a ruptured FDP would. This makes the Sweater Finger Sign a crucial finding in identifying tendon injuries specifically involving the flexor digitorum profundus.