En ortopedia, la lesión de Bankart es una rotura de la parte anteroinferior del reborde glenoideo o labrum glenoideo de la escápula, a consecuencia de una luxación anterior de hombro. Perthes lesion is variant of Bankart lesion, presenting as an anterior glenohumeral injury that occurs when the scapular periosteum remains intact but is stripped. Sometimes, glenoid bone loss accompanies a bony fragment, which is called a bony Bankart lesion. This is observed in.
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They also have a typical location.
Shoulder MR – Instability
Quantifying glenoid bone loss arthroscopically in shoulder instability. Glenohumeral stability from concavity-compression: The same mechanism of compression can result in a Hill-Sachs lesion. Anterior dislocation The shoulder almost always dislocates to anterior and inferior, because motion to superior is limited by the acromion, coracoid process and rotator cuff figure.
The odds ratio of off-track patients over the on-track patients to experience recurrence was 8. Articles Cases Courses Quiz. A bone loss of the humeral head, known as a Hill-Sachs lesion HSLis a compression fracture of the humeral head caused by the anterior rim of the glenoid when the humeral head is dislocated anteriorly in front of the glenoid. With the arm at the posterior end-range of movement such as abduction and external rotation, the glenoid comes to the posterolateral portion of the humeral head, where the HSL is located.
Bone fragment union and remodeling after arthroscopic bony Bankart repair for traumatic anterior shoulder instability with a glenoid defect: On the coronal image a large Hill-Sachs defect is seen.
Luxación de hombro, Inestabilidad del hombro, lesión del labrum hombro
What is wrong with a glenoid bony defect? In Bankart repairs, the labral fragment is sutured back to the glenoid rim using suture anchors. There is a Bankart lesion with extension into the cartilage, i.
The shoulder is a very mobile and therefore unstable joint. We repeated the similar biomechanical studies with a bony defect created in the anterior portion of the glenoid Fig.
Finally there is a medially displaced inferoanterior labrum at the o ‘clock position, i.
This is a traumatic shoulder dislocation, which is pathological and needs to be treated. The responsiveness of intra-articular pressure to the external load is determined by the volume of the joint as well as the thickness and quality of the surrounding soft-tissue envelope, such as the joint capsule and the muscles. The arrow points to the disrupted periosteum.
Unable to process the form. Determination of prevalence of glenoid bony lesions after recurrent anterior shoulder dislocation using the 3-D CT scan.
Most people prefer to use the linear measurement Fig. During arthroscopic surgery, the relative relationship between the HSL and the glenoid can be assessed.
The only exception to this rule is the reverse Bankart, which is the result of a posterior dislocation and injury to the inferoposterior labrum.
The lesion is best identified on MR arthrography.
Bankart and Hill-Sachs lesions are 11x more likely to occur together than isolated injuries 5. It is named after Georg Clemens Perthes German surgeon, who first described the lesion in A HSL is not related to the mid-range stability because it is located away from the glenoid in the mid-range of movement Fig.
Biomechanics of the shoulder. On the coronal-oblique and sagittal reconstruction the displaced hlmbro of the glenoid rim is seen in the o’clock position. Sagittal MR-arthrogram demonstrates the superior extension of the Bankart tear. In order to avoid this confusion, we proposed a new terminology: J Orthop Sci ; 9: This is the one and only purpose of carrying out the dynamic examination.
The tear extends to superior black arrows. Quantification of a glenoid defect with three-dimensional computed tomography and magnetic resonance imaging: The coronal images shows the lexion displaced labrum red arrow. Most commonly due to anterior shoulder dislocation. The structure anterior to the glenoid is not a thorn labrum, but the middle glenohumeral ligament.
Arch Orthop Trauma Surg ; There is an osseus Bankart lesion curved red arrow. Open in a separate window.