Relation among shoulder kinematics and kinetics during thoracohumeral elevations, performance of standardized ADL tasks, rehabilitation exercises, and clinical outcome measures in patients with a primary placed total shoulder prosthesis

In situation where shoulder arthroplasty is necessary the totale shoulder
prosthesis offers a potentially beneficial surgical option.
Outcome studies thus far indicate that there is a tendency of placing a total
shoulder prosthesis in stead of a hemi-shoulder prosthesis ( see introduction
protocol ). This means that more total shoulder rehabiliation wil take place.
Mainly the glenohumeral motion of this prosthesis during movement, ADL-tasks
and rehabilitation is still unclear.

The purpose of this study is to evaluate the relation among shoulder kinematics
during thoracohumeral, glenohumeral and scapulairthoracic elevations,
performance of standardized ADL, Activitities od Daly Life, tasks and clinical
outcome measures of shoulder function.

The patients are recruited from the OLVG hospital Amsterdam.
After their given informed consent, the patients are physical examined, with
includes testing tjemobility of the shoulder, as well as actively and
passively.
Then the range of motion is tested with an electromagnetic tracking device in a
non-invasive way, while the patient is performing three daily tasks. The final
step is an EMG study of the shoulder muscles recorded with surface electrodes
on the skin.

The patient takes place in an electromagnetic field, so the risk would be the
same as making a Magnetic Resonance Iamging scan, which is negletable.