Which of the following is an example of Hinge joint?

Appeared in: AIIMS Raipur NO - 2019 (Shift-1)

Explanation

The elbow joint is a classic example of a hinge joint (ginglymus).
Its structure, formed by the articulation of the humerus with the ulna and radius, primarily permits movement in a single plane.
This uniaxial movement consists of flexion (bending the arm) and extension (straightening the arm), much like the opening and closing of a door hinge.

Option A: The wrist joint (radiocarpal joint) is classified as a condyloid (or ellipsoidal) joint, not a hinge joint.
Option B: The radioulnar joints (both proximal and distal) are classified as pivot joints.
Option C: The shoulder joint is a ball-and-socket joint, which provides the greatest range of motion of any joint type.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Classification of Synovial Joints as background academic context rather than a clinical decision trigger.
Understanding joint classifications is fundamental for nurses during physical assessments, particularly when evaluating a patient's range of motion (ROM).
Knowledge of normal joint movement helps in identifying abnormalities caused by injury (e.g., dislocation, sprain), inflammation (e.g., arthritis), or neurological disorders.
This knowledge is crucial for implementing and evaluating rehabilitation plans, patient education on activity limitations, and preventing further joint damage.

How to Approach the Question

First, recall the definition of a 'hinge joint'. Think of a simple analogy, like a door hinge, which only moves back and forth in one direction.
Translate this analogy to anatomical movements: a hinge joint allows movement in only one plane, which is flexion and extension.
Evaluate each option by considering its primary movements.
Shoulder: Moves in all directions (multiaxial). Eliminate.
Wrist: Moves up/down and side-to-side (biaxial). Eliminate.
Radioulnar: Allows the forearm to twist (rotation). Eliminate.

Concept Tested & Keywords

QMMcmvjvgzh3ZENX28sPEe

E6 Anatomy Applied Ashalatha 4e p. 297-299

E6 Physiology Ganong 27e Vol 2 Part 3 p. 58-60

Practise the full AIIMS Raipur NO - 2019 (Shift-1)

Attempt every question from this paper in a timed mock, then review the full solution for each one.