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Extensor quadriga: Pathomechanics and treatment.

Shrikant J Chinchalkar1, Bing Siang Gan, Robert M McFarlane

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The Canadian Journal of Plastic Surgery = Journal Canadien De Chirurgie Plastique
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Summary
This summary is machine-generated.

Extensor quadriga syndrome occurs when finger extensor tendon gliding is limited, affecting adjacent tendons. Early identification and treatment are crucial for proper hand function and preventing kinematic imbalances.

Keywords:
Extensor lagExtensor quadrigaExtensor tendon biomechanicsExtensor tendon complications

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Area of Science:

  • Orthopedics
  • Hand Surgery
  • Biomechanics

Background:

  • The common extensor digitorum communis muscle powers finger extension via four tendons.
  • Normal gliding amplitude of each extensor tendon is essential for effective hand function.
  • Pathology affecting one extensor tendon can impede the excursion of adjacent tendons.

Purpose of the Study:

  • To define and describe the condition known as extensor quadriga.
  • To highlight the consequences of limited extensor tendon excursion.
  • To emphasize the importance of early diagnosis and management.

Main Methods:

  • Review of anatomical and biomechanical principles of extensor tendon function.
  • Clinical observation of patients with limited extensor tendon excursion.
  • Pathophysiological analysis of extensor quadriga formation.

Main Results:

  • Limited excursion of one extensor tendon reduces the excursion of adjacent tendons.
  • Causes include adhesions, joint contractures, and sagittal band/junctorum tendinum injuries.
  • This interconnected limitation is termed extensor quadriga.

Conclusions:

  • Extensor quadriga syndrome results from restricted extensor tendon gliding.
  • Improper management can lead to abnormal pathomechanical kinematic chain imbalances.
  • Prompt identification and intervention are critical for optimal outcomes.