An in Vivo Study of the Dynamic Q Angle of the Knee Joint during Flexion

Zhu, Zhongqi; Zhang, Y.; Shao, Hongyi; Ding, Hui; Wang, Guangzhi

doi:10.1007/978-3-642-29305-4_63

Cited by 3 publications

(3 citation statements)

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“…While the control group was included as follows: 52 participants without chronic ankle instability, normal participants with no musculoskeletal disorders or history of knee disease and no obvious limb length discrepancy [8].…”

Section: Participantsmentioning

confidence: 99%

“…The Q-angle, which represents the resultant force vector of the quadriceps muscle and patellar tendons on the patella in the frontal plane, has been a subject of research in lower limb pathomechanics. An advancement in this domain introduced the concept of "dynamic Q-angle," [7] specifically defined as the Q angle during knee joint flexion [8]. To accurately predict force vectors during weight-bearing activities, it is recommended to measure the dynamic Q-angle rather than relying on static measurements [9].…”

Section: Introductionmentioning

confidence: 99%

“…and figures(6)(7)(8)(9); the mean values of age of study and control groups were (20.8±2.4) and (20.9±3) years respectively, and of weight were (65.9±13) and (65.8±8.5) kg respectively, the mean values of height of study and control groups were (165.2±8.7) and (166.3±7.5) cm respectively, and of BMI were (24.1±4.3) and (23.8±2.9) kg/m 2 respectively. There were no significant differences between both groups of mean age, weight, height and BMI (p> 0.05).…”

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Changes in dynamic quadriceps angle in patients with chronic ankle instability

Elgendy,

Mohamed,

Mohamed

2024

ijhs

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Background: Changes in dynamic Quadriceps Angle (Q angle) had been studied in healthy subjects and individuals with other musculoskeletal disorders; however, in chronic ankle instability (CAI), it has not yet been determined. The purpose of this study was to investigate the difference in dynamic Q angle of patients with unilateral chronic ankle instability and those without chronic ankle instability. Methods: One-hundred and four participants with and without chronic ankle instability from both genders aged between 18-30 years, with a BMI range of 17.9-27.3, were enrolled into 2 equal groups; a study group and a control group, with mean values of age of the study and control groups (20.8±2.4) and (20.9±3) years respectively and of BMI (24.1±4.3) and (23.8±2.9) kg/m2 respectively. Dynamic Q angle measurement is carried out using dynamic knee valgus (DKV) through the frontal plane projection angle (FPPA) during single limb squat. Results: A statistically significant difference in FPPA angle was observed between the affected limb of the CAI group and controls (P=0.001). Conclusion: The present study suggested that unilateral CAI display an increased knee valgus, suggesting an additional proximal kinematic alteration and chronic maladaptation in the CAI population.

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Section: Participantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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