Etiologic factors associated with patellofemoral pain in runners

Messier, Stephen P.; Davis, Shala E.; Curl, Walton W.; Lowery, Robert B.W.; Pack, Robert J.

doi:10.1249/00005768-199109000-00003

Cited by 229 publications

(200 citation statements)

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“…The valgus alignment of the knee, measured by the Q-angle, has been suggested in several studies as a contributing factor to PF pain (Messier et al, 1991;Moss et al, 1992). As the Q-angle is closely connected with the action line of the quadriceps muscle, an increase in the Q-angle has been considered to increase lateral force to patella during contraction of the quadriceps, which can cause patella mal-tracking (or lateral tracking) and lead to PFP (Fredericson & Yoon, 2006;Post, 1999).…”

Section: ⅰ Introductionmentioning

confidence: 99%

Relationship of the Frontal Knee Alignment Measured by the HKA-Angle with the Relative Activation of the Quadriceps Muscles

Kim¹,

Jinsol²,

Yesol³

et al. 2016

Journal of The Korean Society of Integrative Medicine

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Purpose: The purpose of this study was to compare Hip-Knee-Ankle(HKA) angle and muscle activation ratio between vastus medialis(VM), rectus femoris(RF), and vastus lateralis (VL), and by this, to examine their relationship. It is aimed to explore how the activation ratio among the muscles involved in patellofemoral kinetics would vary in relation with the frontal alignment of the lower extremity.Subjects and Methods: 26 healthy subjects were recruited for the study. The HKA angles were measured with radiograph. The VM, RF, VL muscle activation level were measured by surface electromyography while each participant performed 4 different types of movement (isometric knee extension, squat, ambulation, step-up) and VM/RF, VM/VL, RF/VL ratios were calculated.Pearson correlation was used to estimate the relationship between the HKA angle and the muscle ratio.Results: There was significant moderate correlation between HKA angle and VM: RF on the left side during ambulation (p<0.05). Moderate correlations were also observed during step-up and squat with less significance (p<0.1). Conclusion:The frontal alignment of the knee measured by the HKA angle was conditionally associated with muscle activation ratio between VM and RF (VM:RF); On the left, during ambulation, step-up, and squat, the more valgus knee tended to correlate with the more VM muscle activation ratio, which is expected to induce more stabilizing effect to the patella and its tracking. It suggests that the frontal alignement measured by the HKA-angle can affect PF kinetics. It also indicates a possibility that increase in valgus alignment of the knee, by the HKA measurement, may not act unfavorably to generate PFP.

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Section: ⅰ Introductionmentioning

confidence: 99%

Relationship of the Frontal Knee Alignment Measured by the HKA-Angle with the Relative Activation of the Quadriceps Muscles

Kim¹,

Jinsol²,

Yesol³

et al. 2016

Journal of The Korean Society of Integrative Medicine

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“…Hvid et al [32] provide information about symmetrical occurrence of the Q angle in both limbs; 29 men and women with patella pain took part in the research, and no differences in the Q angle for the right and left limb for any examined person were found. Neither did Messier et al [40] depict any statistically significant differences between the sides in their study involving a 16-person group. it is important to remember, though, that the Q angle may individually occur asymmetrically [41].…”

Section: Discussionmentioning

confidence: 75%

Ultrasonographic evaluation and comparison of articular cartilage of the femur condyles between the limbs in patients with an elevated Q angle

Kusiak¹,

Kawczyński²

2018

Physiother Quart.

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Introduction. TPatellofemoral pain may be caused by an increase of the pressure of the joint surfaces in the patella and the femur, and, as a consequence, a premature abrasion of joint cartilage. The aim of the study was an ultrasonographic evaluation and comparison of articular cartilage of the femur condyles between the limbs in patients with an elevated Q angle.Methods. The total of 13 women aged 35-45 years with the Q angle exceeding 15° took part in the research. The measurement of the Q angle was carried out with a goniometer.

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“…Patellofemoral pain syndrome (PFPS) is an overuse injury characterized by an aching pain in the peripatellar area [1][2][3] . In general, women have wider pelvises, greater hip varus, larger hip width to femoral length ratio, and increases in lateral patellar contact forces.…”

Section: Introductionmentioning

confidence: 99%

Activation of VMO and VL in Squat Exercises for Women with Different Hip Adduction Loads

et al. 2013

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Abstract.[Purpose] The purpose of this study was to investigate the activation of the vastus medialis oblique muscle (VMO) and vastus lateralis muscle (VL) during squat exercise with various hip adduction loads using a pressure-biofeedback unit, and to suggest the most effective exercise method.[Subjects] We recruited 15 healthy adult females with no pain in the knee joint and no other orthopedic problems of the lower limbs.[Methods] The enrolled individuals performed four exercises (conventional squat exercise, maximal load hip adduction squat exercise, 80% hip adduction squat load exercise, 40% hip adduction load squat exercise).[Result] VMO was more active at 80% and 40% hip adduction loads than in the conventional squat and maximal loading hip adduction squat exercises.[Conclusion] We suggest using a 40%~80% hip adduction load in squat exercises for VMO strengthening in the clinical setting.

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Etiologic factors associated with patellofemoral pain in runners

Cited by 229 publications

References 0 publications

Relationship of the Frontal Knee Alignment Measured by the HKA-Angle with the Relative Activation of the Quadriceps Muscles

Relationship of the Frontal Knee Alignment Measured by the HKA-Angle with the Relative Activation of the Quadriceps Muscles

Ultrasonographic evaluation and comparison of articular cartilage of the femur condyles between the limbs in patients with an elevated Q angle

Activation of VMO and VL in Squat Exercises for Women with Different Hip Adduction Loads

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