Comparing Electromyographic Activity of Quadriceps Muscle During Straight Leg Raise in Individuals With and Without Patellofemoral Pain Syndrome

Lotfi, Hiva; Moghadam, Afsun Nodehi; Shati, Mohsen

doi:10.32598/ptj.7.4.197

Cited by 3 publications

(2 citation statements)

References 34 publications

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“…In between-group comparison, no significant difference in the VMO and VL muscle thickness and fiber angle was observed in different positions of SLR maneuver, and the trend of changes in the two groups followed the same pattern by changing the hip rotation with or without ankle dorsiflexor contraction. These results are consistent with the findings of Lotfi et al (2018), who reported no significant difference in the electrical activity ratio of VMO to VL during the SLR maneuver be-tween the healthy and PFPS groups [28]. The lack of between-group difference could be young PFPS patients in the present study with no chronic condition, and the pattern of their knee muscles activity probably did not substantially change compared to healthy individuals.…”

Section: Discussionsupporting

confidence: 93%

Ultrasonography of Knee Muscles During SLR With Different Positions of Hip and Ankle in Patellofemoral Pain Syndrome

Mikaili,

Khademi Kalantari,

KhalkhaliZavieh

et al. 2023

J Rehab

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Objective Due to the substantial prevalence of patellofemoral pain syndrome and the importance of quadriceps strengthening in knee rehabilitation, determining the best way to activate and strengthen the patella stabilizing muscles is considered as one of important keys of treatment. The aim of this study is to evaluate the effect of different hip rotations associated with ankle dorsiflexion during maximal straight leg raising (SLR) maneuver in the sitting position on thickness and fibers angle of vastus medialis oblique (VMO) and vastus lateralis (VL) muscles using ultrasonography. Materials & Methods This quasi-experimental study was performed on 40 individuals (healthy group: 20, patellofemoral pain syndrome [PFPS] group: 20). VMO and VL thickness and fiber angle were measured using ultrasonography during maximal SLR in 6 positions: hip internal, hip external, and neutral rotations with and without ankle dorsiflexion. Results In between-group comparison, no significant difference was found for all variables with different SLR maneuvers (P>0.05). In the within-group comparison, hip external rotation compared to other hip positions without ankle dorsiflexion resulted in a significant increase in VMO thickness and fiber angle in both groups (P<0.05). Also, adding ankle dorsiflexion to different hip rotations during SLR significantly increased the thickness and fiber angle of VMO and VL. Conclusion By changing hip rotations with or without ankle dorsiflexion during SLR, the trend of changes in VMO and VL thickness and fiber angle in the two groups followed the same pattern. Moreover, performing SLR in hip external rotation with ankle dorsiflexion can be recommendable for the rehabilitation of PFPS.

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Section: Discussionsupporting

confidence: 93%

Ultrasonography of Knee Muscles During SLR With Different Positions of Hip and Ankle in Patellofemoral Pain Syndrome

Mikaili,

Khademi Kalantari,

KhalkhaliZavieh

et al. 2023

J Rehab

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“…The risk factors involved in the pathogenesis of PFPS, are classified into two categories, as intrinsic or extrinsic risk factors. In ----------------------------------------------------------------------------------------Received on 25-10-2021 Accepted on 12-05-2022 addition to this, damage to soft tissue structures for example shortening of lateral retinaculum or decrease in strength of medial retinaculum, decreased elasticity of iliotibial band, stiffness of hamstring and gastrocnemius can directly or indirectly impart greater stress on the patella-femoral joint 10 . Some of these intrinsic risk factors can be varied such as decrease in the length of the quadriceps and plantar flexors most of the times, and decreased length of the hamstrings and the iliotibial band or tensor fascia lata complex 11 .…”

Section: Introductionmentioning

confidence: 99%

Comparison between the Effect of Closed Kinetic Chain and Open Kinetic Chain exercises in the strengthening of Vastus Medialis Obliqus in subjects with Patello-Femoral Pain Syndrome - a randomized control trial

Mustafa¹,

Fatima²,

Tariq³

et al. 2022

PJMHS

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Aim: To compare the effects of closed kinetic chain and open kinetic chain exercises in the strengthening of vastus medialis obliqus in subjects with Patello-femoral pain syndrome. Methods: The study was a randomized controlled trial. It was conducted to compare the impact of open and closed kinetic chain exercises to strengthen the Vastus medialis obliqus in PFPS patients. For this purpose, 36 patients both males and females with age 20-40 years having PFPS were allocated randomly to two experimental (group A and group B) and one control group C. Group A, practised open kinetic chain exercises and the second group B practiced closed kinetic chain exercises, the control group C was given general physical therapy exercises, for four weeks. The assessment of Pain and function of the individual taking part in this study were was done before starting the treatment, at 2 weeks and at 4 weeks, using Numerical Pain rating scale and Kujala Anterior knee pain scale, respectively. Results: In conclusion, significant changes i.e. in alleviating pain and enhancing overall functionality has been seen in Group B that performed closed kinetic chain exercises for about 4 weeks. Similarly, there was also a remarked change in pain reduction besides improved function in group A and group C. By comparing all the three groups, significant advantage has been noted with closed kinetic chain exercises as compared to open kinetic chain and conventional PT techniques. Conclusion: Although, both exercise regimens were significant in pain reduction and enhancing function, but close kinetic chain exercises produced remarkable effects. Keywords: Closed kinetic chain exercises, Function Open kinetic chain exercises, Pain, Patello-femoral pain syndrome, PFPS.

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Kadınlarda Dinamik Denge Üzerinde Kuadriseps Kas Aktivasyonu ile Q Açısı Arasındaki İlişki

YILMAZ MENEK,

BUDAK,

HANTAL

2023

Celal Bayar Üniversitesi Sağlık Bilimleri Enstitüsü Dergisi

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Introduction: Lower extremity biomechanics affects the relationship between Q angle, quadriceps muscle activation and the balance. Objectiveː The aim was to examine the relationship between Q angle and quadriceps muscle activation on dynamic balance position in women. Materials and Methodsː Forty women were included in the study. The muscle activation of the quadriceps during dynamic balance in a single leg stance was recorded. A tape measure was used to measure Q angle, surface electromyography was used to assess muscle activation, the Flamingo Balance Test was used to assess static balance, the TechnoBody PK 200WL computerized balance device was used to assess dynamic balance, and the Short Form Musculoskeletal Assessment was used to assess functionality. Resultsː There was a statistically significant positive correlation between the Q angle standing and supine position and vastus medialis muscle activation respectively, (r=0.35, p=0,02; r=0.40, p=0.01). There was a statistically significant positive correlation between the perimeter length and Q angle in standing/supine position respectively, (r=0.33, p=0.04; r=0.32, p=0.04). Area gap percentage and Q angle standing (r=0.89, p=0.02), supine position Q angle values (r=0.63, p=0.03) were positively correlated. Conclusionː If vastus medialis is more strengthened, Q angle would be more normalized, so quadriceps muscle strengthening exercises are helpful for the normalization of the Q angle. Also, when the Q angle is normalized, a single leg balance would be revealed.

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Comparing Electromyographic Activity of Quadriceps Muscle During Straight Leg Raise in Individuals With and Without Patellofemoral Pain Syndrome

Cited by 3 publications

References 34 publications

Ultrasonography of Knee Muscles During SLR With Different Positions of Hip and Ankle in Patellofemoral Pain Syndrome

Ultrasonography of Knee Muscles During SLR With Different Positions of Hip and Ankle in Patellofemoral Pain Syndrome

Comparison between the Effect of Closed Kinetic Chain and Open Kinetic Chain exercises in the strengthening of Vastus Medialis Obliqus in subjects with Patello-Femoral Pain Syndrome - a randomized control trial

Kadınlarda Dinamik Denge Üzerinde Kuadriseps Kas Aktivasyonu ile Q Açısı Arasındaki İlişki

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