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Updated: Jul 10, 2026

Evaluation of Stem Cell Therapies in a Bilateral Patellar Tendon Injury Model in Rats
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Evaluation of Stem Cell Therapies in a Bilateral Patellar Tendon Injury Model in Rats

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[Bilateral spontaneous patellar tendon rupture].

C Haasper1, M Jagodzinski, J Geerling

  • 1Unfallchirurgische Klinik, Medizinische Hochschule Hannover, Hannover. haasper.carl@mh-hannover.de

Zeitschrift Fur Orthopadie Und Unfallchirurgie
|October 17, 2007
PubMed
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Spontaneous bilateral patellar tendon rupture is rare, especially without underlying causes. This case highlights an unusual presentation in a 60-year-old female, emphasizing the need for vigilance in diagnosing such injuries.

Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Traumatology

Background:

  • Patellar tendon ruptures are less common than Achilles or quadriceps tendon ruptures.
  • Bilateral patellar tendon ruptures are exceptionally rare events.
  • Spontaneous tendon ruptures are often linked to steroid use or systemic diseases, or traumatic overload.

Observation:

  • A 60-year-old female patient presented with a spontaneous bilateral patellar tendon rupture.
  • The patient had no history of trauma, systemic disease, or medication use.
  • This presentation is unusual given the typical risk factors for tendon rupture.

Findings:

  • The case details an unprovoked, simultaneous rupture of both patellar tendons.
  • This spontaneous event occurred in the absence of predisposing medical conditions or external forces.

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  • The patient's presentation challenges conventional understanding of patellar tendon rupture etiology.

    • Implications:

    • This case underscores the possibility of spontaneous bilateral patellar tendon rupture without identifiable risk factors.
    • It suggests that non-traumatic, non-systemic causes for such injuries should be considered.
    • Further investigation into the mechanisms of spontaneous tendon failure may be warranted.