Percutaneous release of A1 pulley

Area of Science:

• Orthopedics
• Hand Surgery
• Anatomy

Background:

• Trigger digits, a common condition, involve painful flexion of the finger.
• Percutaneous release is a minimally invasive technique for treating trigger digits.
• The efficacy and completeness of percutaneous A1 pulley release require further investigation.

Purpose of the Study:

• To evaluate the success rate and completeness of percutaneous trigger digit release using an 18-gauge needle in a cadaveric model.
• To identify potential anatomical factors influencing the outcome of this procedure.

Main Methods:

• One hundred percutaneous trigger digit releases were performed on cadavers using an 18-gauge needle.
• The completeness of the A1 pulley release was assessed.
• Neurovascular structures were examined for any injury.

Main Results:

• Successful percutaneous release was achieved in only 59% (59 out of 100) of the digits.
• Incomplete release of the A1 pulley was observed in a high percentage of cases.
• No instances of neurovascular injury were documented during the procedures.
• The thumb, index, and little fingers showed a higher propensity for incomplete releases.

Conclusions:

• Percutaneous trigger digit release with an 18-gauge needle demonstrates a high rate of incomplete A1 pulley release in a cadaveric model.
• The technique may be less effective for specific digits like the thumb, index, and little fingers.
• While safe regarding neurovascular structures, the procedural effectiveness is limited, suggesting potential for recurrence or persistent symptoms.