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Simultaneous removal of a locking plate and implantation of a reversed shoulder prosthesis in elderly patients suffering from fracture sequelae of the proximal humerus

  • M. HolschenEmail author
  • J. Pallmann
  • D. Schorn
  • K.-A. Witt
  • J. Steinbeck
Original Article
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Abstract

Purpose

Open reduction and internal fixation with a locking plate are performed frequently to treat fractures of the proximal humerus. Avascular necrosis and non-union or malunion are potential complications of this procedure, which lead to specific fracture sequelae. The aim of this study was to investigate the clinical and radiological results of patients treated by removal of a failed locking plate of the proximal humerus and simultaneous implantation of a reverse total shoulder prosthesis.

Methods

Twenty-one patients (f = 17, m = 4; mean age 70 years) out of 29 patients were available for follow-up after a mean period of 45 (30–65) months. At follow-up, all patients were assessed with the constant score and the ASES score as well as plain radiographs.

Results

In comparison with the preoperative values, abduction (31° vs. 115°; p < 0.001) and forward flexion (34° vs. 121°; p < 0.001) improved until follow-up, while the pain score on a visual analog scale decreased (6.7 vs. 0.9; p < 0.001). At follow-up, the mean ASES score rated 73 and the constant score rated 62. The radiologic findings included scapular notching (n = 7; 33%), radiolucency (n = 4; 19%), heterotopic ossifications (n = 3; 14%), and stress shielding (n = 4; 19%).

Conclusion

Reverse total shoulder arthroplasty is a useful instrument for the treatment of failed locking plate osteosynthesis of the proximal humerus in elderly patients. The patients benefit from both pain relief and improved shoulder function. The rate of radiologic changes like scapular notching, radiolucency, stress-shielding and heterotopic ossifications at follow-up is notable.

Keywords

Proximal humerus fracture Fracture sequelae Locking plate Reverse total shoulder arthroplasty Scapular notching Revision shoulder arthroplasty 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Ethical approval

Ethical approval was given by the ethical committee of the medical faculty of the University of Münster, Münster, Germany.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Istituto Ortopedico Rizzoli 2019

Authors and Affiliations

  1. 1.Orthopedic Practice Clinic (OPPK)MünsterGermany
  2. 2.RaphaelsklinikMünsterGermany
  3. 3.Orthopaedic DepartmentUniversity of MünsterMünsterGermany

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