Are Patellofemoral Pain and Quadriceps Femoris Muscle Torque Associated With Locomotor Function?

Powers, Christopher M.; Perry, Jacquelin; Hsu, Arthur; Hislop, Helen J.

doi:10.1093/ptj/77.10.1063

Cited by 118 publications

(110 citation statements)

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“…In contrast, two other studies [25,48] failed to find differences in sagittal plane knee joint motion. The PFP participants in these two studies walked slower than the healthy participants and Heino Brechter and Powers [25] reported that the decreased walking velocity might have contributed to the reduced PFJ reaction force in the PFP group.…”

Section: Discussionmentioning

confidence: 64%

“…However, studies that have examined knee joint motion during stair climbing are also inconclusive. One study reported decreased knee flexion at initial step contact and mid-stance during stair descent [20] while Powers et al [48] and Heino Brechter and Powers [25] found no significant differences in sagittal plane knee joint motion between participants with PFP and controls during ascending or descending ramps or stairs. Thus it is unclear whether limited stance-phase knee flexion is a consistent gait adaptation to PFP.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have shown that knee flexion during walking is reduced in participants 268 K. M. Croxsliy et ul. I Jourrzul oJ' Orlhopuedic Research 22 (2004) 267 -274 with PFP compared with healthy individuals [ 14,401 while other trials have failed to demonstrate a difference [20,26,45,47,48].…”

Section: Introductionmentioning

confidence: 99%

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Knee flexion during stair ambulation is altered in individuals with patellofemoral pain

Crossley

Cowan

Bennell

et al. 2004

Journal Orthopaedic Research

113

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Reduced knee flexion is a logical gait adaptation for individuals with patellofemoral pain (PFP) to lessen the patellofemoral joint reaction force and minimise pain during stair ambulation. This gait adaptation may be related to the co‐ordination of individual vasti components. Purpose: This study investigated the amount of stance‐phase knee flexion in individuals with (n = 48) and without (n = 18) PFP using a cross‐sectional design. The relationship between stance‐phase knee flexion and onset timing of individual vasti activity was also examined. Method: Stance‐phase knee flexion was measured in 2‐dimensions using a PEAK movement analysis system during stair ascent and descent. Individuals with PFP were separated into those with synchronous onset of the EMG activity of vastus medialis obliquus (VMO) and vastus lateralis (VL), and those where the onset of VMO EMG activity was delayed relative to the VL. Results: The amount of knee flexion at heel‐strike and peak was less in the individuals with PFP compared with the healthy controls. In addition, there were trends towards individuals with PFP who had a delayed EMG onset of VL having reduced knee flexion during stair descent compared with PFP individuals with simultaneous vasti onsets and the control participants. Conclusion: These results indicate that the amount of stance‐phase knee flexion is lower in individuals with PFP and that this may be related to onset timing of the vasti. © 2003 Orthopaedic Research Society. Published by Elsevier Ltd. All rights reserved.

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Section: Discussionmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Knee flexion during stair ambulation is altered in individuals with patellofemoral pain

Crossley

Cowan

Bennell

et al. 2004

Journal Orthopaedic Research

113

View full text Add to dashboard Cite

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“…However, our data do not support this hypothesis as the changes found do not mimic those in PFP. Other studies involving people with PFP have shown that therapeutic tape can lead to small but significant increases in loading response knee flexion, 30,46 but these may be related to pain relief.…”

Section: Effect Of Patellar Tapingmentioning

confidence: 98%

Effect of patellar taping on vasti onset timing, knee kinematics, and kinetics in asymptomatic individuals with a delayed onset of vastus medialis oblique

2006

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This randomized within-subject study investigated the effects of patellar tape on the onset of electromyographic (EMG) activity of vastus medialis obliquus (VMO) relative to vastus lateralis (VL), knee kinematics, and kinetics in 12 currently asymptomatic individuals with a VMO timing deficit and a history of patellofemoral pain. Participants were required to complete stair stepping and normal-pace and fast-pace walking tasks under three experimental conditions; no tape, control tape and therapeutic tape. EMG onsets of VMO and VL were measured by surface electrodes, stance phase knee flexion by the PEAK movement analysis system and vertical ground reaction force by a force plate. A two-way repeated measures analysis of variance showed that neither therapeutic tape nor control tape had any effect on the EMG VMO-VL onset timing difference. Therapeutic tape, but not control tape, led to significant increases in stance phase knee flexion. The first peak vertical ground reaction force was lowered by both control and therapeutic tape but only during fast walking. The results suggest that tape induced effects on neuromotor control of the vasti seen in other studies are related to reductions in pain rather than the presence of a baseline timing deficit. However, this cannot explain the improvements in stance phase knee flexion observed with tape. ß

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“…That is, some studies have reported that taping does not influence maximal muscle strength 2,7) , while others have found muscle strength decreases 9,10) or increases 8,[11][12][13] . Some studies have reported that the activity of VMO and VL (vastus lateralis) increases 2,11,14) or decreases 9,15) , while others have reported no changes 3,16) .…”

Section: Introductionmentioning

confidence: 99%

The Effects of Kinesio Taping on VMO and VL EMG Activities during Stair Ascent and Descent by Persons with Patellofemoral Pain: a Preliminary Study

Lee

Jeong

et al. 2012

J Phys Ther Sci

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Abstract. [Purpose] This study aimed to find out the effects of Kinesio taping (KT) on the vastus medialis oblique (VMO) and vastus lateralis (VL) EMG activities of patellofemoral pain syndrome (PFPS) patients. [Subjects and Methods] Fifteen PFPS patients (mean age: 23 yr, mean height: 155 cm, mean weight: 71.47 kg) participated in this study. KT was attached to all subjects from the tibial tuberosity, following VMO and VL paths, up to 1/3 of the proximal thigh. Subjects' pain was measured using a VAS scale with and without KT. A digital dynamometer (Power Track II, JTECH medical, USA) was used to measure maximal voluntary isometric contraction (MVIC), and a surface EMG (MP150 BIOPAC System Inc. CA. USA) was used to measure the VMO and VL EMG activities.[Results] KT was found to significantly reduce pain and to increase MVIC. The VMO and VL EMG activities during stair ascent and descent decreased to a significant degree.[Conclusion] The study results suggest that KT is effective for pain relief, increase MVIC and decrease EMG activity of PFPS patients. Accordingly, KT applied around knee joints seems to help PFPS patients during stair ascent and descent and with activities of daily living including walking.

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Are Patellofemoral Pain and Quadriceps Femoris Muscle Torque Associated With Locomotor Function?

Abstract: These findings suggest that functional ability in persons with PFP is associated with increased quadriceps femoris muscle torque. Future research is needed to determine whether function improves with quadriceps femoris muscle strengthening.

Cited by 118 publications

References 1 publication

Knee flexion during stair ambulation is altered in individuals with patellofemoral pain

Knee flexion during stair ambulation is altered in individuals with patellofemoral pain

Effect of patellar taping on vasti onset timing, knee kinematics, and kinetics in asymptomatic individuals with a delayed onset of vastus medialis oblique

The Effects of Kinesio Taping on VMO and VL EMG Activities during Stair Ascent and Descent by Persons with Patellofemoral Pain: a Preliminary Study

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