What preparation is needed for the humeral canal in the Univers shoulder fracture system stem?

The preparation of the humeral canal in the Univers shoulder fracture system stem involves reaming to size and implantation of the stem. This procedure is fundamental for achieving optimal alignment and stability of the implanted stem within the humeral canal, which is critical for proper function and longevity of the shoulder prosthesis.

Reaming is performed to ensure that the canal is appropriately sized, allowing for the proper fit of the stem. This process helps to remove any damaged or irregular bone, creating a smooth surface for the stem to securely anchor within the humerus. Once the reaming is completed and the desired size is achieved, the stem is implanted, which provides support for the shoulder joint and facilitates proper biomechanics.

The other options do not pertain to the necessary preparation for the humeral canal in this specific procedure. Screwing in supports, augmentation with bone graft, and casting the arm are not standard practices for preparing the humeral canal in this context. They may be relevant in other orthopedic procedures or situations, but they do not apply to the preparation needed for the implant in the Univers shoulder fracture system.