What tissue can limit both supination and pronation of the radioulnar joints

An adult presents awake and oriented X4 after falling off a skateboard. Exam: Moderate swelling and significant pain to the right wrist (9/10); abrasions on the right palm with no active external bleeding. Abdomen is soft and non-tender. VS: BP 102/70; P 100; R 20; SpO2 97%; EtCO2 38; lungs are clear and equal bilaterally; skin: pink, warm and dry; pupils PERRL. PMH: No comorbidities and on no medications. Which of these vital signs is suggestive of shock? 

Which of these explains why SCIWORA (spinal cord injuries without radiographic abnormalities) occur exclusively in young children?

During the late portion of external rotation at the glenohumeral joint, a patient notes pain.  Due to your special tests, you suspect a labral tear.  What portion of the labrum to you expect to find a tear?

A physical therapist is assessing internal rotation strength, what muscle is likely to facilitate this motion in all positions of the shoulder complex?

A patient presents with an inability to flex their DIP joint by itself.  Your response to this patient is

The open-pack position of the humeroulnar joint is full elbow extension with supination

What symptoms are most likely to occur with an isolated zygomatic fracture?

Starting from anatomical position, which direction does the forearm normally deviate during elbow flexion (even Adrian Peterson’s despite being fumble prone in NFC championship games)?

Audience analysis is the process of