Skeletal Radiology

, Volume 20, Issue 4, pp 285–289 | Cite as

Ultrasonography in the detection of partial patellar ligament ruptures (jumper's knee)

  • Peter Kälebo
  • Leif Swärd
  • Jon Karlsson
  • Lars Peterson
Articles

Abstract

The diagnostic performance of ultrasonography (US) in the detection of partial ruptures in the proximal part of the patellar ligament (jumper's knee) was studied. A total of 81 athletes with chronic localized pain suggestive of jumper's knee underwent US examination, and 25 of these received surgical treatment. Of 25 proven partial tendon ruptures at surgery, US correctly indicated the diagnosis in all cases. A cone-shaped, poorly echogenic area exceeding 0.5 cm in length in the center of the patellar tendon in combination with its localized thickening proved to be a reliable indicator of jumper's knee. One case was a true-negative. No false-negative or false-positive case was observed. Soft-tissue radiography in 14 cases showed a localized swelling but did not detect intratendinous soft-tissue abnormalities. US is the method of choice for the evaluation of jumper's knee, as it is cheap, non-invasive, repeatable, and accurate.

Key words

Ultrasonography Soft-tissue radiography Patellar ligament Partial ruptures Jumper's knee 

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Copyright information

© International Skeletal Society 1991

Authors and Affiliations

  • Peter Kälebo
    • 1
    • 3
  • Leif Swärd
    • 2
  • Jon Karlsson
    • 2
  • Lars Peterson
    • 4
  1. 1.Department of Diagnostic RadiologyEast HospitalGothenburgSweden
  2. 2.Department of Orthopaedic SurgeryEast HospitalGothenburgSweden
  3. 3.Biomaterials Group, Department of Handicap ResearchUniversity of GothenburgGothenburgSweden
  4. 4.Gothenburg Medical CenterGothenburgSweden

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