Question at position 51 Which of the following types of diarthrotic joints is shown in the image below? BiaxialMultiaxialTriaxialUniaxial单项选择题
A
Biaxial
B
Multiaxial
C
Triaxial
D
Uniaxial

Question

Question at position 51 Which of the following types of diarthrotic joints is shown in the image below? BiaxialMultiaxialTriaxialUniaxial

BlackTom AI · Accepted Answer

To begin parsing the question, we’re asked to identify the type of diarthrotic (synovial) joint depicted in the image and are given four possible classifications.
Option 1: Biaxial. Joints classified as biaxial allow movement around two perpendicular axes (for example, the saddle or condyloid joints). However, the image appears to show a hinge-like articulation with movement predominantly in one plane, which aligns more with uniaxial behavior than with two axes of motion.
Option 2: Multiaxial. Multiaxial joints permit movement around multiple axes, typical of ball-and-socket joints (like the shoulder or hip). The illustration does not show the large range of ball-and-socket freedom characteristic of multiaxial joints; it looks constrained to a single plane.
Option 3: Triaxial. Triaxial is not a standard common category for synovial joints; usually, we discuss uniaxial, biaxial, or multiaxial. Even if interpreted as a broader term, the figure does not demonstrate three distinct axes of rotation.
Option 4: Uniaxial. Uniaxial joints permit movement around a single axis, typically in one plane—think hinge joints like the elbow or interphalangeal joints. The image shows a hinge-like configuration with bones moving mainly in one direction, which matches the definition of a uniaxial joint.
Taken together, the visual cues indicate motion around one axis, supporting the uniaxial classification over the other options. The subtlety that helps distinguish this from biaxial or multiaxial forms lies in the restrained, single-plane movement and the simple hinge-like alignment depicted.
Therefore, the reasoning leads to uniaxial as the type best described by the image, while the other options mischaracterize the joint’s range of motion or common joint classifications.

Question at position 51 Which of the following types of diarthrotic joints is shown in the image below? BiaxialMultiaxialTriaxialUniaxial单项选择题

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