Luxation
of the Acromioclavicular Articulation
Luxation of the
acromioclavicular articulation can be seen in the association with a fracture of
an outer part of a clavicle, and it
mostly leads to progress of secondary osteoarthritis of the acromioclavicular
articulation, and to osteolysis. The most frequent cause of luxation of this
articulation is an injury of the acromioclavicular articulation whose gravity
depends on the damage level of the articular capsule and supporting ligaments.
Rates of dislocation of the acromioclavicular articulation
1. Rate
of dislocation of the acromioclavicular articulation
Minimal damage of the articular capsule, without damage of
the supporting ligaments.
2. Rate of dislocation of the acromioclavicular articulation
It
is represented by subluxation of the joint with a shifting of the acromion
distally towards the clavicle. Subluxation is connected with a damage of the
acromioclavicular ligament. Sometimes there is also a parcial rupture of the
coracoclavicular ligament.
3. Rate of dislocation of the acromioclavicular
articulation
It is represented by complete luxation of the joint with a
rupture of the coracoclavicular ligament.
picture of a complete acromioclavicular luxation, the third
rate
Symptoms at the Dislocation of the Acromioclavicular Articulation
At the dislocation of the
acromioclavicular articulation the patient subjectively feels pains on the top
of the shoulder in the area of the acromioclavicular articulation, which is
sensitive to a palpation, and it is swollen. At complete luxations we can see step
deformity. A restriction of the shoulder motility is also
there.
