Trigger Digits

synonyms:

Trigger Digits ICD-9

Trigger Digits Etiology / Epidemiology / Natural History

• Thumbs trigger digtis are common
• Finger trigger digits are uncommon
• Aquired, not congenital
• Sporadic occurance
• 30% bilateral

Trigger Digits Anatomy

• Finger related to anomalous anatomy: abnormal lumbrical insertions, proximal decussaiotn of the FDS

Trigger Digits Clinical Evaluation

• Palpable nodule of the flexor pollicis longus. May have triggering or a fixed flexion contracture if the IP joint.

Trigger Digits Xray / Diagnositc Tests

Trigger Digits Classification / Treatment

• Thumb, infants: may resolve spontaneously by age 1 in up to 50% of patients.
• Thumb >1y/o: release of A1 pulley
• Finger: more extensive release is required. Need to expose the lumbrical, A1 pulleys, A# pulleys may beed ecision of the slip of the FDS.

Trigger Digits Associated Injuries / Differential Diagnosis

• Mucopolysaccharidosis
• Diabtetes
• Juvenile rheumatoid arthritis

Trigger Digits Complications

• Recurrence

Trigger Digits Follow-up Care

Trigger Digits Review References

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