"French surgeon Paul-Marie Grammont (1940-2013) designs a clinically successful reverse prosthesis (where other reverse designs have failed) for arthritic shoulders with massive rotator cuff tear in 1985, in which normal anatomical prostheses could not solve the problem of restoring both joint stability and mobility 7,8."
"Reverse total shoulder arthroplasties (RTSA) or replacements (RTSR) are a variant of the standard total shoulder replacement (TSR). It is often the preferred method when there has been advanced damage to the rotator cuff, as it increases the range of motion by medialising the centre of rotation and increasing the deltoid muscle's lever action."
"neutral AP view (Grashey view) and axillary views obtained"
"The overall complication rate for all forms of total shoulder arthroplasty is ~15% ref. Complications for reverse TSA specifically include:"
"increased arc of rotation through lateral positioning of the glenoid component through thickened glenosphere, spacers, bone graft, etc"
"intra-operative glenoid fracture 12"
Expected headings
"Technique"
"Device structure"
"Radiographic features"
"Plain radiograph"
"CT"
"MRI"
"Ultrasound"
"scapular notching: most common complication ~10-50% depending on prosthesis design; may not be clinically significant 12"
"dislocation: ~3% (range 1-5.7%); higher in revision arthroplasties 12,15"
"glenoid component: most common complication affecting ~30% of all shoulder replacements 5, but decreased (~5%; range 3-10% 12) with reverse total shoulder replacements 5"
"humeral component: less common (~4%; range 1.2-10% 12)"
"Reversing the ball and socket arrangement, the point of rotation is moved more medially, aiding the deltoid muscle which, without an intact rotator cuff, will provide most of the early abduction for the upper extremity through a level action 12. However, internal and external rotation are more limited in this arrangement."