Sternoclavicular joint (SCJ) dislocations may follow direct trauma to the anteromedial aspect of the clavicle that drives it backward and causes a posterior dislocation. (medscape.com)
The capsule surrounding the joint is weakest inferiorly, while it is reinforced on the superior, anterior, and posterior aspects by the various ligaments, including the interclavicular, anterior and posterior sternoclavicular, and costoclavicular ligaments. (medscape.com)
The acromioclavicular joint may appear to be widened [due to medial rotation of the scapula and posterior displacement of the clavicle by the pull of the trapezius muscle]. (boneandspine.com)
Capsule3
Most of the SCJ's strength and stability originates from the joint capsule and supporting ligaments. (medscape.com)
The acromioclavicular joint has a thin capsule stabilized by ligaments and by attachment of the fibers of the deltoid and trapezius muscles. (boneandspine.com)
Generally this is caused by functional instability (neuromuscular control) combined with a laxity in the glenohumeral joint capsule and ligaments. (hawkesphysiotherapy.co.uk)
Laxity1
Type 1: sprain of SCJ without laxity or pain. (medscape.com)
Ligaments3
Type 3: rupture of SCJ and costoclavicular ligaments, resulting in dislocation of the joint. (medscape.com)
Coracoclavicular ligaments are medial to the joint and extend from the inferior surface of the clavicle to the base of the coracoid process of the scapula. (boneandspine.com)
As the joint is transversely oriented, downward forces may cause disruption of the stabilizing structures [acromioclavicular and coracoclavicular ligaments]. (boneandspine.com)
Clavicle3
In a study of 23 patients with atraumatic sternoclavicular dislocation, in which the clavicle subluxates earlier in abduction than in forward flexion, the average at diagnosis was 18.6 years. (medscape.com)
The SCJ is a saddle-type joint that provides free movement of the clavicle in nearly all planes. (medscape.com)
The acromioclavicular joint is part of the shoulder girdle and is diarthrodial joint between the acromion process and lateral end of the clavicle. (boneandspine.com)
Shoulder1
Acromioclavicular joint injuries are also known as shoulder separations, acromioclavicular joint separation or acromioclavicular joint dislocation and occur as a result of downward force on the acromion. (boneandspine.com)
Acromioclavicular5
Acromioclavicular joint injuries occur most commonly in sporting activities. (boneandspine.com)
Acromioclavicular joint injuries are seen especially in competitive athletes[ rugby or hockey players] and occur most frequently in the second decade of life. (boneandspine.com)
The normal width of the acromioclavicular joint is 1-3 mm. (boneandspine.com)
Acromioclavicular ligament and coracoclavicular ligament are the primary static stabilizers of the acromioclavicular joint. (boneandspine.com)
The acromioclavicular joint is stabilized by a combination of muscular and ligamentous forces. (boneandspine.com)
Synovial2
The sternoclavicular (SC) joint is a saddle-shaped, synovial joint that provides the primary skeletal connection between the axial skeleton and the upper limb. (medscape.com)
A freely moveable synovial joint links the upper extremity to the torso, with the sternoclavicular joint (SCJ) participating in all movements of the upper extremity. (medscape.com)
Acromioclavicular1
An acromioclavicular joint injury, otherwise known as a shoulder separation, is a traumatic injury to the acromioclavicular (AC) joint with disruption of the acromioclavicular ligaments and/or coracoclavicular (CC) ligaments. (orthobullets.com)
Ankle2
Alteration in global motor strategy following lateral ankle sprain. (medscape.com)
The knee, ankle and elbow are the most commonly affected joints. (brianwatermanmd.com)
Diagnosis is made with bilateral focused shoulder radiographs to assess for AC and CC interval widening. (orthobullets.com)
Diagnosis2
In a study of 23 patients with atraumatic sternoclavicular dislocation, in which the clavicle subluxates earlier in abduction than in forward flexion, the average at diagnosis was 18.6 years. (medscape.com)
Diagnosis generally requires an MR arthrogram of the hip joint in question. (eco-sirenes.eu)
Injury1
Osteochondral fracture (when a piece of bone that also contains joint cartilage breaks off in the joint) or chondral injury (an injury just to the cartilage in the joint) is similar to OCD, but it is generally caused by an acute injury to the cartilage and underlying bone. (brianwatermanmd.com)
Motion1
Joint motion quality in vibroacoustic signal analysis for patients with patellofemoral joint disorders. (medscape.com)
Bone and cartilage1
Loose pieces of bone and cartilage can even break off into joint. (brianwatermanmd.com)
Primary1
The sternoclavicular (SC) joint is a saddle-shaped, synovial joint that provides the primary skeletal connection between the axial skeleton and the upper limb. (medscape.com)
Pain2
Type 1: sprain of SCJ without laxity or pain. (medscape.com)
Association between joint hypermobility, scoliosis, and cranial base anomalies in paediatric Osteogenesis imperfecta patients: a retrospective cross-sectional study. (medscape.com)