Reverse total shoulder replacement surgery (RTSA) is performed for individuals with advanced arthritis of the shoulder who also have tears in their rotator cuff muscles. A metal hemisphere is placed in the shoulder blade, and a plastic cup on a stem is placed in the upper arm. This orientation is opposite to the normal anatomy, giving rise to the term "reverse" shoulder replacement. While RTSA has a good clinical track record, no studies have examined how well fixed the implanted components are within patients.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Enrollment
40
All patients will receive a Delta XTEND reverse shoulder implant
At the time of surgery, 0.8 mm diameter Tantalum marker beads will be injected into the bone surrounding the implant,
migration between cemented and press-fit RTSA humeral components detected by Radiostereometric analysis
Time frame: 24 months
difference in component migration between conventional and lateralized glenoid components detected by Radiostereometric analysis
Time frame: 24 months
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