Prospective Strength Measurement Involving Muscles Altered In Arthroscopic Latarjet
Prospective Strength Measurement Involving Muscles Altered In Arthroscopic Latarjet
Open and arthroscopic Latarjet procedures are used to treat shoulder instability as primary
 and salvage procedures. During surgery the coracoid process is detached and repositioned to
 the anterior glenoid through a subscapularis split and fixed in place, resulting in an
 enlarged glenoid and therefor articular surface. However, before this is done, the pectorals
 minor, which inserts at the coracoid process, has to be detached and is left without further
 treatment. Moreover, the conjoint tendon, the origin of the short head of the biceps and
 coracobrachialis, is repositioned with the coracoid and therefor distalized and medialized.

 No study currently followed up on the strength of the muscles altered. The aim of this study
 is therefor, to prospectively measure range of motion and strength of the operated shoulder
 at different time points pre- and postoperatively, comparing it with the healthy shoulder in
 each individual.
Strength, range of motion and stability will be assessed pre-operatively and at 6 weeks, 12
 weeks, 6 months, 12 months and 24 months post-operatively. Next to standard radiological
 follow up, including X-ray, arthrographic computed tomography as well as arthrographic
 magnetic resonance imaging, specific shoulder scores will be utilised. Strength for general
 shoulder motion as well as specifically for the subscapularis, the pectorals minor, the
 coracobrachialis and the biceps will be measured with a shoulder dynamometer. Data will be
 analysed and published.
Inclusion Criteria:

 -  Patients who experienced at least one shoulder dislocation.

 -  Patients who are willing to participate in the study

 -  Patients who receive arthroscopic Latarjet procedure for treatment of glen-humeral
 instability

 -  Patients who are at least 18 years old.

 -  Patients with an ISI-Score of at least 4 points.

 Exclusion Criteria:

 -  Patients older than 50 or younger than 18 years of age.

 -  Patients with painful unstable (multidirectional) instability

 -  Patients with congenital defects of the bones involved (humerus, scapula).

 -  Patients with an ISIS of smaller 4 points.