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Effects of the Ankle Joint Position on the Kinematic Characteristics of the Lower Extremities Between Individuals with Normal and High Q-Angles During Bilateral Squat

  • Journal of the Korean Society of Physical Medicine
  • Abbr : J Korean Soc Phys Med
  • 2024, 19(4), pp.11-20
  • Publisher : The Korean Society of Physical Medicine
  • Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy
  • Received : August 5, 2024
  • Accepted : October 28, 2024
  • Published : November 30, 2024

Park So Hyun 1 JANG EUNMI 1

1영산대학교

Accredited

ABSTRACT

Ankle plantar flexion, Bilateral squat, HigPURPOSE: The alignment of one joint in the lower limb can affect the kinematic changes in other joints. This study examined the biomechanics of the lower extremities when bilateral squats were performed under three conditions of the ankle joint in groups with normal and high quadriceps angles (Q-angles). METHODS: Thirty subjects were categorized into two groups: those with a mean Q-angle of ≤20° and > 20° were assigned to the normal Q-angle group (N = 20) and high Q-angle group (HQ = 10), respectively. The participants performed a bilateral squat on a bare floor (B), tilt table for dorsiflexion fixation (D), and tilt table for plantar flexion fixation (P) to examine the three-dimensional motion analysis of the lower extremity during the squat under the three ankle joint conditions. RESULTS: A significant between-group variation was found in the frontal plane movement of the knee joint during the plantar flexion squat and in the transverse plane movement of the hip joint during the plantar flexion squat (p < .05). CONCLUSION: Individuals with a high Q-angle showed compensatory movements in the hip and knee joints during the plantar flexion squat movement.h Q-angle

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