The Proximal Humerus Dilemma: Fix It, Replace It, or Leave It Alone?

You’re scrubbed in, staring at a comminuted proximal humerus fracture in an elderly patient. The clock is ticking, the OR team waits, and the question looms: do we fix it, replace it, or simply let it heal on its own? This scenario plays out daily, yet the answer remains elusive. The stakes are high—functional outcomes, complication risks, and patient expectations all hang in the balance. Our decisions here define surgical excellence.

Traditionally, the proximal humerus fracture was a straightforward call: non-displaced fractures get conservative treatment, displaced ones get fixation, and the most complex fractures might warrant arthroplasty. This “textbook” approach is now under scrutiny. Emerging evidence challenges the dogma, revealing that the line between fixation and replacement is blurrier than we thought. Meanwhile, some fractures previously destined for surgery might do just as well without it.

Let’s dissect the core issues reshaping our approach.

1. Fixation: The Promise and the Pitfalls

Locking plates revolutionized proximal humerus fixation, offering angular stability in osteoporotic bone. Early enthusiasm touted excellent anatomical restoration and functional recovery. Yet, real-world outcomes temper that optimism. High rates of screw cut-out, avascular necrosis, and reoperation plague certain fracture patterns, especially in the elderly with poor bone quality.

What’s changed? We now appreciate that not all fractures benefit equally from fixation. The Neer classification, while useful, oversimplifies fracture complexity and vascular compromise. Recent studies emphasize the importance of medial calcar support and the integrity of the humeral head blood supply. When these are compromised, fixation risks failure.

This forces us to rethink surgical fundamentals: fixation is not a one-size-fits-all solution. Patient selection, fracture morphology, and bone quality dictate success. We must resist the urge to “fix everything” and instead tailor our approach.

2. Replacement: When and Why?

Hemiarthroplasty once dominated the treatment of complex fractures deemed unsalvageable by fixation. However, functional outcomes often disappointed, largely due to tuberosity malposition and rotator cuff dysfunction. The advent of reverse total shoulder arthroplasty (RTSA) has shifted the paradigm.

RTSA offers a reliable option for elderly patients with comminuted fractures and poor tuberosity healing potential. It bypasses rotator cuff dependence, providing predictable pain relief and functional improvement. Yet, it is not without controversy. Long-term data on implant survival and complications like scapular notching remain concerns.

The surgical fundamentals here evolve from “replace and hope for the best” to a nuanced understanding of patient factors: age, activity level, bone quality, and rotator cuff status. RTSA is not a panacea but a powerful tool when used judiciously.

3. Nonoperative Management: The Underrated Option

We often underestimate the capacity of the proximal humerus to heal without surgery, especially in low-demand elderly patients. Recent randomized trials reveal that many displaced fractures treated nonoperatively achieve comparable functional outcomes to surgery, with fewer complications.

This challenges the reflexive surgical mindset. Nonoperative treatment demands rigorous patient counseling and close follow-up but spares patients from surgical risks. It also underscores the importance of individualized care rather than protocol-driven decisions.

The Editor’s Take

The proximal humerus fracture is a clinical Rubik’s cube. There is no universal solution, only a spectrum of options that must be calibrated to the patient and fracture specifics. Our role is to integrate evolving evidence with surgical judgment.

We advocate for a measured approach:

• Fixation remains valuable but requires meticulous assessment of fracture pattern and bone quality. It is best reserved for patients with good bone stock and reconstructible anatomy.
• Replacement, particularly RTSA, has earned its place for select elderly patients with complex fractures and compromised rotator cuffs. It demands surgical precision and patient selection to optimize outcomes.
• Nonoperative management deserves a seat at the table, especially for low-demand patients or those with significant comorbidities.

Ultimately, the proximal humerus dilemma teaches us humility. Surgical fundamentals are not static; they evolve with evidence and experience. We must resist oversimplification and embrace the complexity inherent in each case. Mastery lies not in dogma but in discernment.

This is the surgical art we owe our patients—and the intellectual rigor our profession demands.

Last Updated on February 1, 2026 by Christian Veillette