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Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
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Is there any relationship between Q-angle and lower extremity malalignment?

Defne Kaya1, Mahmut Nedim Doral

  • 1Department of Sports Medicine, Faculty of Medicine, Hacettepe University, Ankara, Turkey. defne@hacettepe.edu.tr

Acta Orthopaedica Et Traumatologica Turcica
|February 23, 2013
PubMed
Summary

Women with patellofemoral pain syndrome (PFPS) showed a higher Q-angle and altered lower extremity alignment. However, the Q-angle was not directly related to malalignment, suggesting PFPS may be multifactorial.

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Area of Science:

  • Orthopedics
  • Biomechanics
  • Sports Medicine

Background:

  • Patellofemoral pain syndrome (PFPS) is a common condition affecting knee function.
  • The Q-angle and lower extremity alignment are frequently implicated in PFPS etiology.
  • Understanding these biomechanical factors is crucial for effective treatment strategies.

Purpose of the Study:

  • To investigate the association between the Q-angle and lower extremity alignment in women diagnosed with unilateral PFPS.
  • To compare alignment parameters between the affected and unaffected limbs in patients with PFPS.

Main Methods:

  • Eighty-five women with unilateral PFPS were included, utilizing their unaffected limb as an internal control.
  • Measurements of Q-angle, lateral distal femoral angle (LDFA), and medial proximal tibial angle (MPTA) were taken for both knees.
  • Statistical analyses were performed to compare parameters and assess relationships.

Main Results:

  • A significantly larger Q-angle (19.61±4.35°) was observed in the affected knees compared to the unaffected knees (17.63±4.29°).
  • A significant difference was found in LDFA (81.00±2.58° vs. 81.83±3.03°), but not MPTA (87.88±2.63° vs. 87.60±3.29°).
  • No significant correlation was found between Q-angle and LDFA or MPTA on either the affected or unaffected side.

Conclusions:

  • An increased Q-angle and potentially decreased LDFA may be linked to PFPS, though causality is not established.
  • The study found no direct relationship between Q-angle and lower extremity malalignment in this cohort.
  • Further longitudinal research is recommended to explore factors like femoral anteversion and gait in PFPS development.