Feasibility of MRI-imaging of the Affinis short shoulder prosthesis

normally a MRI is not a good way to evaluate the rotator cuff after placing a
shoulder prosthesis. because of the prosthesis this isn't possible, especially
because of the cobalt chroom containment. this prosthesis doesn't contain
cobalt chroom, so we think it is possible to get a good clear view on the
rotator cuff. so we can have a follow-up and maybe see in the future the moment
to place another prosthesis.

To Establish the usefulness of MRI for assessment of the rotator cuff in
patients with an Affinis short prosthesis implanted in the shoulder.

All the patients will have received their normal postoperative follow-up. They
will have been seen two, six and twelve weeks after the operation. The MRI*s
for this diagnostic study will be conducted after six and twelve months, but
all the patients that had an MRI scan done pre-operatively with a clear
clinical indication may be included as well.

the normal risks of making a MRI,

Specific MRI incompatibility such as severe claustrophobia or patients with
pregnancy,implanted electronic devices, such as pacemakers, internal
defibrillators, some cochlear implants and nerve stimulators. Patients
with
ferromagnetic aneurysm clips in the brain or ferromagnetic objects in
critical
places like the eye, brain, lung.