Background: No study to date has evaluated cortical thickness as it relates to locking plate failure or screw pullout in the proximal humerus. The purpose of this study is to determine the relationship between proximal humerus cortical thickness and locked plate hardware failure in a cadaveric proximal humerus fracture model.
Methods: Twelve humerus specimens were placed into two groups based on the proximal humerus cortical thickness on an anteroposterior radiograph: less than 4 mm and greater than 4 mm. The specimens were plated with a six-hole proximal humerus locking plate and a 15-mm resection osteotomy at the surgical neck was performed. The specimens were tested in a materials testing machine at a displacement of 5 mm/min to failure.
Results: Load at failure, stiffness, maximum load, failure, and fracture gap closure were all statistically similar (P > 0.05) between the groups.
Conclusion: Our biomechanical study used modern locked plate-screw construct fixation of a simulated two-part proximal humerus fracture. The mechanical strength was unaffected based on a threshold combined proximal humerus cortical thickness of 4 mm.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/BOT.0b013e31822421f7 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Is there an impact of surgeon's experience on in-hospital outcome in patients with operatively treated proximal humerus and humerus shaft fractures?
Surg Pract Sci
March 2025
Division of Trauma Surgery, University Hospital Zurich (USZ), University of Zurich (UZH), Raemistrasse 100, 8091 Zuerich, Switzerland.
Background: Proximal humerus and shaft fractures are common, comprising 10-11 % of all fractures. Progress in their management includes refined surgical techniques and implants, coupled with a deeper understanding of fracture patterns.
Aims: This study examines the effect of surgical education on in-hospital outcomes for operatively treated proximal and humerus shaft fractures, aiming to enhance patient care and results.
Comment On: "Comparison of Reconstructive Techniques for Nonprimary Malignancies in the Proximal Humerus".
J Surg Oncol
January 2025
Rehabilitation Department, Haiyan Hospital of Traditional Chinese Medicine, Jiaxing, Zhejiang, The People's Republic of China.
Comparing the efficacy of 3D-printing-assisted surgery with traditional surgical treatment of fracture: an umbrella review.
J Orthop Traumatol
January 2025
Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
Background: The objective of this review is to evaluate the methodological quality of meta-analyses and observe the consistency of the evidence they generated to provide comprehensive and reliable evidence for the clinical use of three-dimensional (3D) printing in surgical treatment of fracture.
Methods: We searched three databases (PubMed, Embase, and Web of Science) up until August 2024. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standards were adhered to in this review.
Treatment of Proximal Humeral Fractures in Older Patients During COVID-19 Pandemic in Germany.
Clin Epidemiol
January 2025
Department of Trauma-, Hand- and Reconstructive Surgery, University Hospital Muenster, Muenster, Germany.
Purpose: The COVID-19 pandemic had a severe influence on the entire health sector. Until today, the effect of a SARS-CoV-2 infection on older patients with a proximal humeral fracture (PHF) is unknown. This study examined the following questions: Did the incidence of PHF of older people in Germany vary during the pandemic? Did the treatment change between the lockdown and non-lockdown periods? Was a SARS-CoV-2 infection associated with a worse outcome?
Methods: Retrospective claims data of the BARMER health insurance were analysed.
Medialized vs. Lateralized Reverse Total Shoulder Arthroplasty for Proximal Humerus Fractures: A Systematic Review and Meta-Analysis.
JBJS Rev
January 2025
Department of Orthopaedic Surgery & Sports Medicine, University of Florida, Gainesville, Florida.
Background: Reverse shoulder arthroplasty (RSA) is increasingly used in the treatment of proximal humerus fractures (PHFs) with reliable clinical improvement. Lateralized RSA implants have conferred superior outcomes compared with the original Grammont design in patients with nontraumatic indications. However, in the setting of a PHF, lateralized components can place increased tension across the tuberosity fracture site and potentially compromise tuberosity healing and outcomes.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!