Which statement best describes recommended humeral reaming technique?

Which statement best describes recommended humeral reaming technique?

• A. Ream until cortical chatter is obtained.
• B. Ream until cortical fit is obtained.
• C. Reaming depth is irrelevant.
• D. Do not ream the humerus.

Answer: (B)

The aim is to achieve a cortical fit during canal preparation. Reaming should continue until the endosteal surface provides snug contact around the canal so the humeral stem can seat with the intended stability, whether by press-fit or cement mantle. Pushing beyond this point to chase chatter or removing more bone undermines bone integrity and increases fracture risk, without improving fixation. So, reaming to a cortical fit gives a stable, accurate fit, while over-reaming or under-reaming can jeopardize fixation and bone health. Depth matters: ream enough to accommodate the chosen stem size and ensure stability, but not so much that the cortex is thinned or breached.

The aim is to achieve a cortical fit during canal preparation. Reaming should continue until the endosteal surface provides snug contact around the canal so the humeral stem can seat with the intended stability, whether by press-fit or cement mantle. Pushing beyond this point to chase chatter or removing more bone undermines bone integrity and increases fracture risk, without improving fixation. So, reaming to a cortical fit gives a stable, accurate fit, while over-reaming or under-reaming can jeopardize fixation and bone health. Depth matters: ream enough to accommodate the chosen stem size and ensure stability, but not so much that the cortex is thinned or breached.