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Trigger finger at the A2 pulley in children--two case reports
1Department of Orthopaedic Surgery, Kanazawa Medical Center, Kanazawa, Japan. ikeikemed@yahoo.co.jp
Summary
Trigger finger at the A2 pulley is rare. Surgical treatment successfully resolved triggering in two patients by removing flexor digitorum profundus nodules.
Area of Science:
- Hand surgery
- Orthopedics
- Musculoskeletal disorders
Background:
- Trigger finger, a condition causing finger locking, is typically associated with other anatomical locations.
- A2 pulley involvement in trigger finger is exceptionally uncommon.
Observation:
- Two rare cases of trigger finger specifically at the A2 pulley were encountered.
- Case 1 involved a flexor digitorum profundus (FDP) nodule at the distal A2 pulley entry, causing inability to flex the digit.
- Case 2 presented an FDP nodule at the proximal A2 pulley entry, resulting in inability to extend the digit.
Findings:
- Surgical intervention was performed for both patients.
- The surgical procedures successfully excised the identified FDP nodules.
- Post-operative outcomes confirmed the complete resolution of triggering symptoms in both cases.
Implications:
- This study highlights surgical treatment as an effective option for rare A2 pulley trigger finger.
- It expands understanding of FDP nodule locations causing A2 pulley triggering.
- Further research may elucidate the specific etiology of FDP nodules in this rare presentation.
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