Question 1

Which of the following best explains why the glenohumeral (shoulder) joint is the most freely moving joint in the body?

Accepted Answer

It is a ball-and-socket joint with a large hemispherical head of humerus fitting into a small, shallow glenoid fossa.

Question 2

Which movement is NOT typically associated with the temporomandibular joint (TMJ)?

Accepted Answer

Rotation of the mandible

Question 3

A patient presents with a dislocated TMJ after a direct blow to the jaw. Which anatomical feature most likely contributed to the ease of dislocation?

Accepted Answer

Shallow mandibular fossa

Question 4

Which structure adds depth to the glenoid fossa of the shoulder joint, but still only allows it to hold about one-third of the humeral head?

Accepted Answer

Glenoid labrum

Question 5

Which equation best represents the relationship between joint mobility ($$M) $$and stability ($$S) in $$the glenohumeral joint?

Accepted Answer

$$M \propto \frac{1}{S}$$

Question 6

Which of the following is a primary stabilizer of the glenohumeral joint?

Accepted Answer

Rotator cuff muscle tendons

Question 7

A baseball pitcher suffers a torn ulnar collateral ligament (UCL) in the elbow. Which surgical procedure is commonly performed to repair this injury?

Accepted Answer

Tommy John surgery

Question 8

Which ligament in the hip joint supplies an artery to the femur head but does NOT stabilize the joint?

Accepted Answer

Ligamentum teres

Question 9

Which of the following best describes the function of the anterior cruciate ligament (ACL) in the knee?

Accepted Answer

Prevents forward sliding of tibia and stops hyperextension

Question 10

A patient with a lateral ankle sprain has torn the anterior talofibular ligament. Which grade of sprain is most likely if the ligament is completely torn?

Accepted Answer

Grade III

Question 11

Which of the following is TRUE regarding cartilage tears in synovial joints?

Accepted Answer

Fragments from cartilage tears may cause joint to lock or bind.

Question 12

Which equation best represents the effect of ligament injury on joint stability ($$S) $$and risk of dislocation ($$D$$)?

Accepted Answer

$$D \propto \frac{1}{S}$$

Question 13

Which of the following is a distinguishing feature of the hip (coxal) joint compared to the shoulder joint?

Accepted Answer

The hip joint is stabilized by a deep socket and strong ligaments.

Question 14

Which of the following is NOT a function of the menisci in the knee joint?

Accepted Answer

Preventing anterior-posterior displacement

Question 15

A patient with rheumatoid arthritis is most likely to experience which of the following symptoms?

Accepted Answer

Joint pain, stiffness, and swelling

Question 16

Which ligament prevents excessive rotation of the knee when the joint is extended?

Accepted Answer

Fibular and tibial collateral ligaments

Question 17

Which of the following best describes the difference between tendinitis and tendinosis?

Accepted Answer

Tendinitis is acute inflammation, while tendinosis is chronic degeneration with microtears.

Question 18

Which of the following is a common treatment for bursitis?

Accepted Answer

Rest, ice, and anti-inflammatory drugs

Question 19

Which of the following statements about synovial joints is correct?

Accepted Answer

Some synovial joints have unique structural features, abilities, and weaknesses.

Question 20

Which of the following is most likely to occur after a joint is forced out of alignment and then returned to its normal position?

Accepted Answer

Dislocation (luxation)

Select Synovial Joints: Structure, Function, and Clinical Relevance

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