Treatment of a Complex Interprosthetic Humerus Fracture

Area of Science:

• Orthopedic Surgery
• Traumatology
• Biomaterials

Background:

• Interprosthetic humeral shaft fractures pose significant surgical challenges.
• Adjacent intramedullary implants complicate adequate fracture fixation.
• Patient and fracture characteristics, along with scar tissue, increase surgical difficulty.

Purpose of the Study:

• To review a surgical technique for managing humeral shaft fractures between shoulder and elbow arthroplasty.
• To highlight strategies for achieving stable fixation in the presence of existing implants and cement mantles.
• To emphasize considerations for nerve protection and biologic augmentation.

Main Methods:

• Operative fixation technique for interprosthetic humeral shaft fractures.
• Careful attention to regional anatomy and nerve protection (radial and ulnar nerves).
• Utilizing fixation strategies to ensure stability on cement mantles or well-fixed stems.
• Consideration for biologic augmentation to enhance bone healing.

Main Results:

• Successful surgical fixation of a humeral shaft fracture between a cemented shoulder hemiarthroplasty and total elbow arthroplasty.
• Achieved stability for adequate healing and postoperative mobilization.
• Demonstrated the feasibility of the described technique in a complex clinical scenario.

Conclusions:

• Surgical management of interprosthetic humeral shaft fractures requires meticulous planning and technique.
• Achieving stability through specialized fixation strategies is crucial for successful outcomes.
• Biologic augmentation may be necessary to overcome a compromised healing environment.