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What is the difference between sprain and strain injuries?

Published in Injury Types 1 min read

A sprain involves damage to ligaments, while a strain involves damage to muscles or tendons.

Here's a more detailed breakdown:

Sprains

  • Definition: A sprain is an injury to a ligament. Ligaments are strong bands of tissue that connect bones to each other at a joint.
  • Cause: Sprains occur when a joint is forced beyond its normal range of motion, stretching or tearing the ligaments.
  • Common Locations: Ankles, knees, wrists, and fingers.
  • Symptoms:
    • Pain
    • Swelling
    • Bruising
    • Limited range of motion
    • Instability of the joint

Strains

  • Definition: A strain is an injury to a muscle or tendon. Tendons are fibrous cords of tissue that connect muscles to bones.
  • Cause: Strains occur when a muscle or tendon is overstretched or torn, often due to overuse or sudden injury.
  • Common Locations: Back, hamstrings (back of the thigh), and groin.
  • Symptoms:
    • Pain
    • Muscle spasms
    • Swelling
    • Stiffness
    • Weakness

Summary Table

Feature Sprain Strain
Injured Tissue Ligament Muscle or Tendon
Cause Overstretching/tearing ligament Overstretching/tearing muscle/tendon
Common Sites Ankles, Knees, Wrists Back, Hamstrings, Groin

In essence, remember that sprains affect ligaments (connecting bone to bone), while strains affect muscles and tendons (connecting muscle to bone).