Resurfacing (CAP) vs a stemmed humeral component.

Patients ask about a humeral resurfacing prosthesis, sometimes known as a CAP as an alternative to a stemmed humeral component. Our preference is usually for the stemmed component because in our hands (1) the fixation to the humerus is better, (2) there is greater ability to adjust the position of the joint surface in balancing soft tissue tension, (3) resecting the entire humeral head provides necessary access to manage the glenoid, which is the critical aspect of many shoulder reconstructions, and (4) retaining the additional bone does not offer any advantages should subsequent surgeries be necessary.

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