Determine the optimal degree of retroversion (0-30º) to obtain the best rotational mobility, both internal and external, of the shoulder after implanting a reversed sghoulder arthroplasty (Comprehensive system), and analyze the functional and radiologic results based on humeral retroversion.
Methodology: Open randomized controlled clinical trial. It will be carried out with patients operated with reverse shoulder arthroplasty (at 0º and 30º of humeral retroversion) included consecutively in Terrassa Hospital from January 2019 to June 2021. The estimated sample will be 30 patients per group with diagnosis of massive rotator cuff rupture, rotator cuff arthropaty and primary osteoarthritis with cuff injury, with Walch's type B2 glena or in patients older than 80 years. A global study will be carried out preoperatively and postoperatively with radiographs, computerized tomography, magnetic resonance, and a biomechanical study.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
60
REVERSED SHOULDER ARTHROPLASTY IN TWO DIFFERENT GROUPS. Group 0 humeral retroversion, Group 30º humeral retroversion
JM MORA
Terrassa, Barcelona, Spain
INTERNAL ROTATION
AT THE SIDE (HAND TO the BACK from CONSTANT TEST)
Time frame: 2 YEARS
INTERNAL ROTATION
degrees
Time frame: 2 YEARS
EXTERNAL ROTATION
degrees
Time frame: 2 YEARS
FORWARD ELEVATION
degrees
Time frame: 2 YEARS
Simple shoulder test
0-100
Time frame: 2 years
Constant test
0-100
Time frame: 2 years
ASES test
0-100
Time frame: 2 years
Glenoid inclination angle
degrees
Time frame: 2 years
glenoid retroversion angle
degrees
Time frame: 2 years
abduction
degrees
Time frame: 2 years
center of rotation
milimiters
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Time frame: 2 years
lateralizaiton offset
milimiters
Time frame: 2 years