Split distal flexor pollicis longus tenodesis: long-term results.

Area of Science:

• Hand surgery
• Orthopedic surgery
• Reconstructive surgery

Background:

• Intrinsic thumb muscle dysfunction leads to interphalangeal joint hyperflexion.
• Positive Froment's sign indicates a lack of intrinsic thumb muscle function.
• This can impair hand function and grip strength.

Purpose of the Study:

• To evaluate the efficacy of split flexor pollicis longus tenodesis in preventing thumb interphalangeal joint hyperflexion.
• To assess the functional outcomes and range of motion following the procedure.

Main Methods:

• A split flexor pollicis longus tenodesis procedure was performed on 39 hands.
• Postoperative range of motion in the interphalangeal joint was measured at 6 and 12 months.

Main Results:

• The procedure effectively prevented hyperflexion in the interphalangeal joint.
• Mean postoperative range of motion was 28 degrees at 6 months and 23 degrees at 12 months.
• Arthrodesis was rendered unnecessary by this technique.

Conclusions:

• Split flexor pollicis longus tenodesis is a highly recommended procedure for managing intrinsic thumb muscle dysfunction.
• It restores thumb stability and function without necessitating joint fusion.
• This technique offers a viable alternative to arthrodesis for preventing Froment's sign.