Q: Which equation best represents the relationship between joint stability and the number of ligaments present?

$$\text{Stability} \propto \text{Number of Ligaments}$$

Q: A patient is diagnosed with osteoarthritis after complete removal of the meniscus in the knee. Which equation best describes the relationship between meniscus removal and risk of osteoarthritis?

$$\text{Risk of Osteoarthritis} \propto \text{Extent of Meniscus Removal}$$

Question 1

Which of the following best describes the structural classification of the joint between the first rib and the manubrium of the sternum?

Accepted Answer

Cartilaginous joint (specifically synchondrosis)

Question 2

A patient presents with pain and swelling in the knee after a sports injury. Which structure is most likely damaged if the injury involves a tear in the fibrocartilage that improves the fit of bone ends and stabilizes the joint?

Accepted Answer

Meniscus (articular disc)

Question 3

Which movement occurs when the sole of the foot turns medially?

Accepted Answer

Inversion

Question 4

Which of the following synovial joint types allows for multiaxial movement, including flexion, extension, abduction, adduction, and rotation?

Accepted Answer

Ball-and-socket joint

Question 5

What is the primary function of synovial fluid within the joint cavity?

Accepted Answer

To lubricate and nourish articular cartilage

Question 6

A patient is unable to move their thumb to touch the tips of their other fingers. Which special movement is impaired?

Accepted Answer

Opposition

Question 7

Which equation best represents the relationship between joint stability and the number of ligaments present?

Accepted Answer

$$	ext{Stability} \propto 	ext{Number of Ligaments}$$

Question 8

Which joint is most likely to dislocate due to its shallow socket and high mobility, often resulting in the mouth remaining open?

Accepted Answer

Temporomandibular joint (TMJ)

Question 9

Which movement decreases the angle between two bones, usually in the sagittal plane?

Accepted Answer

Flexion

Question 10

A patient with a torn ligament in the ankle is diagnosed with a sprain. Which of the following best explains why partial tears repair slowly?

Accepted Answer

Ligaments have poor vascularization

Question 11

Which synovial joint type is formed by the articulation of the humerus and ulna, allowing only flexion and extension?

Accepted Answer

Hinge joint

Question 12

Which of the following movements occurs in the frontal plane and moves a limb away from the body midline?

Accepted Answer

Abduction

Question 13

Which structure is responsible for secreting synovial fluid in a synovial joint?

Accepted Answer

Synovial membrane

Question 14

Which clinical implication is most likely if a patient presents with inflammation of a fluid-filled sac that decreases friction where a ligament rubs against a bone?

Accepted Answer

Bursitis

Question 15

Which movement involves turning a bone around its own long axis, such as the rotation of the humerus?

Accepted Answer

Rotation

Question 16

Which synovial joint type is characterized by articular surfaces that are both concave and convex, allowing biaxial movement?

Accepted Answer

Saddle joint

Question 17

A patient is diagnosed with osteoarthritis after complete removal of the meniscus in the knee. Which equation best describes the relationship between meniscus removal and risk of osteoarthritis?

Accepted Answer

$$	ext{Risk of Osteoarthritis} \propto 	ext{Extent of Meniscus Removal}$$

Question 18

Which movement occurs when the palm faces anteriorly and the radius and ulna are parallel?

Accepted Answer

Supination

Question 19

Which synovial joint type allows for gliding movements only and is classified as nonaxial?

Accepted Answer

Plane joint

Question 20

Which factor is considered the most important in reinforcing the stability of shoulder and knee joints?

Accepted Answer

Muscle tone

Joints (Articulations): Structure, Classification, and Clinical Implications

Guida di studio - Domande di pratica

Study guide - Flashcard