Shoulder Instability Questions Quiz! Trivia

A Grade III AC dislocation is characterized by the tearing of both the AC (acromioclavicular) and CC (coracoclavicular) ligaments. This means that the joint between the acromion (part of the shoulder blade) and the clavicle (collarbone) is disrupted. As a result, the patient will experience slight bruising (ecchymosis) and a noticeable step-off deformity, where there is a visible and palpable gap between the acromion and clavicle. Therefore, the statement is true.

The given statement is true. The explanation for this is that Open Bankart Repair, a surgical procedure used to treat recurrent shoulder dislocations, is considered superior to Arthroscopic repair. Suture tacks, which are used to secure the torn labrum back to the glenoid bone, are considered superior to transglenoid sutures. Cutting the labrum can make the shoulder 20% more unstable. The shoulder has a negative pressure inside, which helps to keep the humeral head in place. The cut for a Bankart repair is typically made in the deltopectoral region. Subscapularis takedown precautions are necessary when the cut is vertical to avoid injury to the subscapularis muscle.

The statement suggests that all patients with instability will have laxity. However, this is not necessarily true as instability can have various causes and not all of them are related to laxity. Instability can also be caused by muscle weakness, neurological issues, or other factors. Therefore, it is incorrect to assume that all patients with instability will have laxity.

The explanation for the given correct answer is that according to the circle concept, both the anterior and posterior capsules need to be affected for true instability to occur. The anterior capsule acts as the first restraint when the humeral head goes anterior, but for true instability, there must also be plastic deformation on the posterior capsule. Therefore, the statement is true.

The most common secondary complication after dislocation is recurrent dislocation. This refers to the repeated occurrence of the joint being dislocated after the initial dislocation. This can happen due to ligamentous laxity or damage to the structures that stabilize the joint. Recurrent dislocation can lead to chronic instability and may require surgical intervention to address the underlying issue and prevent further dislocations.

SLAP II is indeed the most common type of SLAP lesion, characterized by a tear in the superior labrum that extends into the biceps tendon. In SLAP II, the biceps tendon is completely detached from its attachment on the labrum. This detachment distinguishes SLAP II from other types of SLAP lesions, making the statement true.

The statement is false because when treating AC joint arthrosis, iontophoresis should be tried before considering an injection. Iontophoresis is a non-invasive treatment that uses electrical currents to deliver medication directly to the affected area, which can help reduce inflammation and pain. Injections, on the other hand, involve injecting medication directly into the joint, which is a more invasive approach and is usually considered if other treatments have not been successful. Therefore, iontophoresis should be attempted before resorting to injections for AC joint arthrosis.

The statement "O'Briens is a test for instability" is incorrect. O'Briens is not a test for instability.

not-available-via-ai

The explanation for the correct answer is that the statement provided is false. AMBRI does not stand for Atraumatic Multi-directional Bilateral Rehabilitation Inferior Capsular Shift. The acronym AMBRI actually stands for Atraumatic Multidirectional Shoulder Instability, which is a condition characterized by shoulder instability in multiple directions. It is more common in young women who have systemic hypermobility. The statement also incorrectly states that the instability must be superior, whereas it can be anterior or posterior as well. Therefore, the correct answer is false.

The explanation for the answer "False" is that the statement is incorrect. The coracohumeral ligament does not behave like the SGHL. While the SGHL acts to prevent inferior displacement of the humeral head when the arm is abducted to 45 degrees, the coracohumeral ligament has a different function. It helps to support and stabilize the shoulder joint, but it does not specifically prevent inferior displacement of the humeral head during abduction. Therefore, the statement is false.

The jerk test is a diagnostic test used to assess the integrity of the posterior capsule of the shoulder joint. It involves applying a sudden jerk or traction force to the arm while the shoulder is in a specific position. If there is laxity or excessive movement of the humeral head, it indicates a possible injury or instability in the posterior capsule. Therefore, the correct answer is the posterior capsule.

The given statement "There is 5* retroversion" is not true regarding the articulating surfaces of the GHJ. Retroversion refers to the backward angulation of a bone or joint. In this case, it indicates the backward angulation of the humeral head in relation to the glenoid. However, the correct answer states that there is 5* retroversion, which means that there is a backward angulation of 5 degrees.

The given answer is "Traction." Traction is not a mechanism of a dislocation. Dislocation refers to the displacement of a bone from its normal position within a joint. The mechanisms of a dislocation include forced flexion, FOOSh (fall on outstretched hand), and AbD/Er (abduction and external rotation). Traction, on the other hand, is a therapeutic technique used to apply tension to a body part to facilitate healing or realignment, but it is not a mechanism that causes a dislocation.

Paralabral ganglion cysts can occur with a TYPE II SLAP lesion, but they do not typically occur in the suprascapular notch or affect the Axillary nerve. Therefore, the statement is false.

The best way to visualize shoulder instability is by using the Scapular AP and Axillary radiograph views. The Scapular AP view allows for a better assessment of the glenoid and scapular alignment, while the Axillary view provides a clear visualization of the humeral head and glenoid relationship. These two views together provide a comprehensive evaluation of shoulder instability, helping to identify any abnormalities or dislocations in the joint.

The statement "A SLAP lesion has better healing potential than a Bankart lesion" is not true. SLAP (Superior Labrum Anterior to Posterior) lesions involve the tear of the labrum and the biceps tendon attachment at the top of the shoulder joint. These types of injuries are known to have a more complex and challenging healing process compared to Bankart lesions, which involve the tear of the labrum at the front of the shoulder joint. Therefore, Bankart lesions generally have better healing potential than SLAP lesions.