First Carpometacarpal Joint Instability: Dorsal Ligament Reconstruction

Area of Science:

• Orthopedic Surgery
• Hand Surgery
• Biomechanics

Background:

• The first carpometacarpal (CMC-I) joint possesses complex ligamentous structures crucial for stability.
• Instability of the CMC-I joint can result from trauma or ligamentous laxity, potentially leading to subluxation and osteoarthritis.
• Current surgical treatments, like the Eaton-Littler reconstruction, have limitations, with patients often experiencing residual hand dysfunction.

Purpose of the Study:

• To describe a novel extra-articular surgical technique for addressing CMC-I joint instability.
• To reconstruct the dorsal radial ligament and posterior oblique ligament using a graft from the abductor pollicis longus tendon.
• To propose a potentially less invasive alternative to the gold standard procedure with the hypothesis of improved outcomes.

Main Methods:

• Description of a novel extra-articular surgical technique for CMC-I joint instability.
• Utilization of an abductor pollicis longus tendon graft for reconstruction.
• Focus on reconstructing the dorsal ligament group, specifically the dorsal radial ligament and posterior oblique ligament.

Main Results:

• The study describes a new surgical technique for CMC-I joint instability.
• A novel graft reconstruction method for the dorsal ligament group is detailed.
• The technique is hypothesized to be a less invasive alternative with potentially better outcomes.

Conclusions:

• A novel extra-articular technique for CMC-I joint instability is presented.
• This technique utilizes an abductor pollicis longus tendon graft for ligament reconstruction.
• The proposed method may offer a less invasive surgical option with improved functional results for patients.