MODULAR HUMERAL PROSTHESIS WITH SPHEROCENTRIC FEATURE

摘要

The improved humeral prosthesis includes a modular segmented humeral shaft design and an elbow assembly with a spherocentric ulnar stem. The humeral shaft segments can be adjusted to achieve varying shaft lengths allowing the surgeon to readily tailor the prosthesis to the patient. A modular metaphyseal segment allows attachment of a humeral head or a spherical cup insert for a reverse shoulder arrangement. The ulnar stem is rotatable within the elbow assembly to approximate the pronosupination movement of a patient's wrist.