The Question is from neet-zoology locomotion-and-movement disorders-of-muscular-and-skeltal-system, and it was created by the author BALASOURY

Question

Which joint is most commonly affected in rheumatoid arthritis?

BALASOURY · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Rheumatoid Arthritis (RA) Pathophysiology
 **Related Topics**:  Autoimmune diseases, joint inflammation, synovitis
 **Prerequisites**: Basic understanding of the skeletal system and common joint locations.
## SOLUTION PATHWAY
**Given Information**:
  The question asks about the most commonly affected joint in rheumatoid arthritis.
  The options are: hip, knee, small joints of hands and feet, shoulder.
**Method & Steps**:
 1. Understand Rheumatoid Arthritis:
  Reasoning: Rheumatoid arthritis is a systemic autoimmune disease that primarily affects the joints.  The inflammation targets the synovium (the lining of the joints).
  Formula/Rule: None directly applicable.
 2. Identify common sites of inflammation:
  Working: While RA can affect many joints, it has a predilection for smaller joints.  The small joints of the hands and feet are frequently the first to be affected and often experience the most severe symptoms.
  Key Point:  The symmetrical nature of joint involvement is a key characteristic of RA, meaning both sides of the body are usually affected.
 3. Select the most common affected joint:
  Result: Small joints of hands and feet are the most commonly affected joints in rheumatoid arthritis.
  Verification: This is a well-established fact in rheumatology and is supported by numerous medical textbooks and studies.
 ## OPTION ANALYSIS
A :x: Hip joint: While the hip can be affected by RA, it's less common than smaller joints.
B :x: Knee joint: The knee is also affected by RA, but less frequently than the small joints of the hands and feet.
C ✓: Small joints of hands and feet: This is the most common site of RA involvement.
D :x: Shoulder joint: The shoulder joint can be involved in RA, but it is less frequent than the small joints of the hands and feet.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Assuming larger joints are more commonly affected:  RA's predilection for smaller joints is crucial to remember.
  2.Confusing RA with osteoarthritis: Osteoarthritis more commonly affects larger, weight-bearing joints.
 **Quick Tips**:
  1.Remember the acronym 'hands and feet' to aid recall.
  2.Visualize the image of swollen fingers and toes as a common presentation of early RA.

BALASOURY · Answer

Hip joint

BALASOURY · Answer

Knee joint

BALASOURY · Answer

The correct Option is "Small joints of hands and feet"

BALASOURY · Answer

Shoulder joint

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