Sprain refers to injury of ligaments and capsules and should not be confused with strain which refers to injury to muscles and their tendons. These terms should not be used interchangeably.


Some authors classify sprain into the following grades

  • grade 1: stretching +/- minimal tearing (no macroscopic rupture)
  • grade 2: larger but incomplete tearing
  • grade 3: complete tearing/rupture
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Article information

rID: 6096
Synonyms or Alternate Spellings:
  • Ligamentous sprains
  • Ligamental sprains
  • Ligamental sprain
  • Capsular sprain
  • Capsular sprains
  • Sprains
  • Sprain involving ligaments
  • Ligamentous sprain

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Cases and figures

  • Case 1: ulnar collateral ligament sprain
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