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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A number of lesions are closely related have similar appearances: Sometimes an axillary view can be of help, but when in doubt go to CT. Preoperative analysis of the Hill-Sachs lesion in anterior shoulder instability: It represents a patial tear of the anteroinferior labrum with adjacent cartilage damage.
The red arrow points to the absent labrum – Buford complex. This is the one and only purpose of carrying out the dynamic examination. It is a very fundamental question.
On the other hand, a HSL, which is out of the glenoid track off-track lesionhas a risk of engagement and dislocation. Posterior dislocations are uncommon and easily missed, because there is less displacement compared to the anterior dislocation. J Bone Joint Surg [Am] ; This was an incidental finding on a chest-film.
Bankart lesions occur as a direct result of anterior dislocation of the humeral head, whereby the humerus is compressed against the labrum. MR imaging bankrt MR arthrographic findings with surgical correlation.
Hill-Sachs lesion HSL entirely covered by the glenoid at the end-range: Drawing lesioh the glenoid track: The yellow arrow points to the anterior glenoid rim. Although the labrum may be normally positioned, functionally it no longer provides any stability to the humeral head, mainly as a result of impairment of the normal stabilizing influence of the inferior glenohumeral ligament.
The basic concept bsnkart shoulder stability is explained in the first section of this article lfsion that the following explanation of bony stability will be better and more easily understood by the readers. A Clockwise approach to the labrum is the easiest way to diagnose labral tears and to differentiate them from normal labral variants. This stabilising mechanism is called a concavity-compression effect. As mentioned previously, HSL is related to the end-range instability.
Perthes lesion | Radiology Reference Article |
All hombeo is needed is a ruler. First scroll through the images and try to find out what is going on. Although he acknowledged the frequent co-occurrence of glenoid and humeral fracture with these injuries, Bankart posited that it was injury to the soft tissue structures which specifically predisposed to recurrent dislocation 7.
Anterior bony defects were created at 3: This lesion is named after Arthur Sydney Blundell Bankart — 6a British orthopedic surgeon. Location of the Hill-Sachs lesion in shoulders with recurrent anterior dislocation. Clin Orthop Relat Res ; A useful adjunct in the lezion of recurrent instability of the shoulder.
Shoulder stability The basic concept of shoulder stability is explained in the first section of this article so lesiom the following explanation of bony stability will be better and more easily understood by the readers. There is a superior dislocation of the humeral head. Value of the glenoid profil in recurrent luxations of the shoulder. There are many labral variants that may simulate a labral tear. Next notice the high signal at 12 o’ clock red arrows.
These injuries are always located in the o’clock position because they are caused by an anterior-inferior dislocation. Hill-Sachs lesion HSL and the glenoid: Therefore, a dislocation could be physiological or pathological depending on which position of the arm the dislocation occurs in and whether it is accompanied by symptoms. Acknowledgments The author thanks K-N. The MR-images are of a patient who had undergone both an anterior aswell as a posterior dislocation.
Sagittal MR-arthrogram demonstrates the superior extension of the Bankart tear. Finally there is a medially displaced inferoanterior labrum at the o ‘clock position, i. Kumar VP, Balasubramaniam P. Evolving concept of bipolar bankarh loss and the Hill-Sachs lesion: Arthroscopic repair of glenoid fractures using suture anchors.
Check for errors and try again. Reverse Bankart Detachment of the posteroinferior labrum o’clock with tearing of the posterior scapular periosteum with or without an osseus fragment of the glenoid. A HSL, which stays on the glenoid track on-track lesioncannot engage with the glenoid and cannot cause dislocation.
Mid-range stability is provided by the negative intra-articular pressure 34 and the concavity-compression effect.
‘On-track’ and ‘off-track’ shoulder lesions
Some reported that it was sufficient to fix a fragment back to the glenoid even though the fragment size was much smaller than the size of the glenoid defect. The capsulo-ligamentous structures are the main stabilisers with the arm at the end-range of movement, whereas negative intra-articular pressure and concavity-compression effect are the main stabilisers with the arm in the mid-range of movement.
Lssion that case, a best-fit circle method can be used instead.
In Bankart repairs, the labral fragment is sutured back to the glenoid rim using suture anchors. Intraarticular pressure of the shoulder. Perthes lesion a variant of the Bankart lesion: What is hombbro with a glenoid bony defect? The coronal images shows the medially displaced labrum red arrow. Structurally, this fracture is thought to be less contributory to anterior instability.