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Updated: Jun 18, 2025

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Reverse Total Shoulder Arthroplasty
Published on: July 5, 2011
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Proximal humerus fracture and acromioclavicular joint dislocation
Maren Bieling1, Alexander Ellwein1,2, Helmut Lill1
1Klinik für Orthopädie und Unfallchirurgie, DIAKOVERE Friederikenstift , Hannover, Germany.
Innovative Surgical Sciences
|August 5, 2024
Summary
Proximal humerus fractures and acromioclavicular joint injuries are common. Treatment varies from non-operative to surgical options like osteosynthesis, endoprosthetics, or Endobutton systems, depending on injury severity and patient factors.
Area of Science:
- Orthopedic Surgery
- Traumatology
- Sports Medicine
Background:
- Proximal humerus fractures are common in older adults, often linked to osteoporosis, requiring tailored treatment based on displacement.
- Acromioclavicular joint injuries predominantly affect young athletes, with severity dictating treatment, ranging from conservative to surgical interventions.
Purpose of the Study:
- To review current treatment strategies for proximal humerus fractures and acromioclavicular joint injuries.
- To discuss the decision-making process for operative versus non-operative management.
- To highlight advancements in surgical techniques and implant systems.
Main Methods:
- Review of current literature on proximal humerus fractures and acromioclavicular joint injuries.
- Analysis of treatment algorithms based on fracture classification and patient-specific factors.
- Comparison of historical and modern surgical techniques, including osteosynthesis, reverse shoulder arthroplasty, and Endobutton systems.
Main Results:
- Non-operative treatment is suitable for minimally displaced proximal humerus fractures; complex cases benefit from surgical intervention, with reverse shoulder arthroplasty showing good long-term results.
- Acromioclavicular joint injury management depends on Rockwood classification, with ongoing debate regarding surgical indications for higher grades.
- Minimally invasive Endobutton systems are now the standard for acromioclavicular joint injuries, replacing older methods like hook plates due to fewer complications.
Conclusions:
- Optimal treatment for proximal humerus fractures and acromioclavicular joint injuries requires careful consideration of fracture morphology, injury severity, and individual patient factors.
- Advancements in surgical techniques, such as reverse shoulder arthroplasty and Endobutton systems, have improved outcomes for complex upper extremity trauma.
- Further research is needed to clarify optimal surgical indications for higher-grade acromioclavicular joint injuries.
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