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Dislocation Lesions

Patient Information
Shoulder Dislocations
Dislocation Lesions
Shoulder Dislocation LesionsShoulder Dislocation Lesions
ALPSA LesionALPSA Lesion
Bankart TearBankart Tear
Bony Bankart LesionBony Bankart Lesion
GLAD LesionGLAD Lesion
HAGL InjuryHAGL Injury
Hill-Sachs LesionHill-Sachs Lesion
Perthe's LesionPerthe's Lesion

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HAGL Injury

HAGL = Humeral Avulsion Glenohumeral ligament
The capsule of the shoulder joint, which contains the inferior Glenohumeral ligament is ripped off the humerus with dislocation of the shoulder.
This is an injury that is probably associated with a higher risk of recurrent dislocations than a Bankart tear.
A HAGL tear can be difficult to diagnose and should always be suspected. 
It is impossible to see on a plain MRI scan and a MR-Arthrogram or CT-Arthrogram is better. It can be seen at arthroscopy, only if the surgeon specifically looks for it as that area of the shoulder can be difficult to view with a standard arthroscopy.

Some HAGL tears can be repaired by arthroscopy, but often an open surgical repair is better to access it properly.

HAGL tear. The image on the right shows the HAGL as seen at arthroscopic surgery:
HAGL - Humeral Avulsion of Glenohumeral ligament. A tearing of the capsule off the humerus with shoulder dislocations. The image on the right shows the HAGL as seen at arthroscopic surgery.

arthroscopic Repair of a HAGL Tear:

The patient is placed onto their side or in a beach chair position, with the operative arm in traction and slightly abducted from the side their body. A posterior portal is made for the arthroscope and two anterior portals are established for the surgical instruments. The first of these anterior portals (superoanterior portal) is placed in the superior aspect of the rotator interval with a clear cannula. The second portal (percutaneous portal) a couple of centimetres directly below the first, in a trans-subscapularis fashion,  through the subscapularis tendon. This portal is necessary for the proper angle of approach to the neck of the humerus for suture anchor placement.

Once the portals are established, the HAGL tear is identified. In order to prepare the bony bed, the original humeral insertion site of the glenohumeral ligament complex is gently debrided using a burr shaver.

A suture anchor is placed into the medial humeral neck via a percutaneous portal through the subscapularis muscle.

A suture retriever is advanced through the cannula and passed through the inferior/lateral capsule just inside of the avulsion borders.

A monofilament suture loop is advanced into the joint through the suture retriever device and retrieved through the anterosuperior portal with one of the suture limbs. The remaining suture limb is left outside the skin. The monofilament is tied to the suture limb and shuttled back through the percutaneous portal through the capsuloligamentous complex, pulling the suture behind it and then out through the anterosuperior portal again.

The suture is pulled out through the percutaneous portal and a mattress suture is tied with a knot pusher. This allows for the knot to be placed outside the capsule. This can be repeated as the repair continues.

After the repair of the HAGL, examination under anesthesia is performed to verify firm anterior and anteroinferior glenohumeral stability.

The patient is placed in a shoulder immobiliser sling after surgery and rehabilitated according to the anterior stabilisation rehabilitation programme. For more details click here.

Video of arthroscopic repair of HAGL:

a structure (tissue) that attaches a muscle to a bone. When a tendon becomes inflamed, the condition is referred to as tendinitis or tendonitis.
at the top; towards the head
The most anterior muscle and tendon of the rotator cuff. Internally rotates the shoulder.
at the back; behind
towards the centre of the body; inwards
A tough band of connective tissue that connects two bones to each other. "Ligament" is a fitting term; it comes from the Latin "ligare" meaning "to bind or tie."
at the side or outer aspect
at the botom; towards the feet
bone of the upper arm - connecting the shoulder to the elbow
joint comes out of it's socket completely
Remove unwanted, dead tissue. Debride comes from the French 'debrider', to remove the bridle (as from a horse).
A Bankart lesion is an injury to the anterior glenoid labrum associated with anterior shoulder dislocations. It usually requires surgical repair. It is named after Arthur Sydney Blundell Bankart, an English orthopaedic surgeon, who lived from 1879-1951.
'key-hole' surgery. Surgery performed via small incisions, using special instruments and a viewing scope..
at the front; in front
moving of a body part away from the central axis of the body

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