Anatomy of the junction of the vastus lateralis tendon and the patella.

Hallisey, Michael J.; Doherty, Neville; Bennett, William F.; Fulkerson, John P.

doi:10.2106/00004623-198769040-00011

Cited by 91 publications

(46 citation statements)

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“…However, they did not load the oblique parts of the vasti medialis or lateralis separately: Lieb and Perry 41 reported the large medial force component, and Bose et al 42 drew attention to the posterior component of the VMO tension, which stabilizes the patella against lateral displacement. The orientation of the VLO was reported by Hallisey et al 43 The quadriceps tension level was lower than in normal locomotion in our experiment to avoid failure of the muscle fibers at the cable attachments. With a total quadriceps tension of 175 N, this was approximately the force used to extend the knee against gravity with the femur horizontal, so the kinematic data might be related to that clinical test situation.…”

Section: Discussionsupporting

confidence: 66%

Patellofemoral kinematics during knee flexion-extension: An in vitro study

2006

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The purpose of this work was to obtain kinematics data for the normal human patellofemoral joint in vitro. Eight fresh-frozen cadaver knees were used. The heads of the quadriceps were separated, and the knees mounted in a kinematics rig. The femoral axis was aligned with an electromagnetic transmitter. The six heads of the quadriceps, including vasti medialis and lateralis obliquus, were loaded via cables according to their physiological cross-sectional areas and orientations. Magnetic trackers were mounted on the patella and tibia. The knee was flexedextended against the extending muscle action, and patellar tracking was measured in six degrees of freedom. As the knee flexed, the patella flexed by 0.7 times the tibiofemoral flexion angle. It also translated medially 4 mm to engage the trochlear groove at 208 knee flexion, then translated to 7 mm lateral by 908 knee flexion. The patella tilted progressively to 78 lateral by 908 knee flexion, and patellar medial-lateral rotation was usually less than 38. This is believed to be the first set of patellar tracking data obtained in both flexion and extension motion while the patella was acted on by a full set of quadriceps muscle tensions acting in physiological directions. These data may be used in future studies of the effects of pathologies on patellar tracking. ß

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Section: Discussionsupporting

confidence: 66%

Patellofemoral kinematics during knee flexion-extension: An in vitro study

2006

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“…The vastus lateralis is the biggest of these muscles and, if damaged, could result in patella and knee instability, as well as decreased knee extension (17,49). Perforator vessels to the ALT flap are septocutaneous (between rectus femoris and vastus lateralis) or musculocutaneous, the latter running through the vastus lateralis, and require intramuscular dissection with potential damage to the muscle (19,26,34).…”

Section: Vastus Lateralis Musclementioning

confidence: 99%

A systematic review of anterolateral thigh flap donor site morbidity

Collins¹,

Ayeni²

2012

J Plastic Surgery

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“…Mais recentemente, o músculo vasto lateral passou a ser estudado anatomicamente e, como o VMO, também foi dividido em duas porções: uma proximal, denominada de vasto lateral longo (VLL) e outra distal, o vasto lateral oblíquo (VLO) (1,11,18,23) (Figura1). Além disso, o VLO passou a ser estudado também pela importância clínica na técnica cirúrgica do release lateral, cuja liberação diminui o tempo de recuperação pós operatória, quando comparado com a transecção de todo vasto lateral (7) .…”

Section: Introductionunclassified

Análise funcional dos estabilizadores patelares

2004

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RESUMOO músculo vasto medial obliquo (VMO) desempenha importante papel na estabilização medial da patela. No entanto, o padrão de recrutamento dos componentes laterais, o músculo vasto lateral longo (VLL) e vasto lateral obliquo (VLO) não está estabelecido. O objetivo deste trabalho foi analisar a atividade eletromiográfica dos músculos VMO, VLL e VLO de 21 indivíduos saudáveis (X=23,3 e DP=2,9), sendo 10 mulheres e 11 homens, sem história clínica de dor ou lesão osteomioarticular. Para tanto foi utilizado um eletromiógrafo NICOLET VIKING II de 8 canais (NICOLET Biomedical Instruments) e eletrodos bipolares de superfície para registrar a atividade elétrica dos múscu-los VMO, VLL e VLO durante a realização de exercícios isométricos de extensão do joelho a 15º e 90º de flexão. Os dados eletromiográficos foram normalizados pela contração isométrica voluntária máxima de extensão do joelho a 50º de flexão e revelaram que os músculos VLL e VLO apresentam diferença significativa no padrão de recrutamento podendo ser considerados fisiologicamente distintos. O músculo VMO desempenhou juntamente com o VLO um papel recíproco e sincrôni-co na estabilização patelar e apresentou maior ativação em relação ao músculo VLL nos exercícios isométricos de extensão do joelho a 90º.Descritores: Joelho; Músculo; Eletromiografia. INTRODUÇÃOAs desordens femoropatelares são provavelmente a causa mais comum de patologia no joelho encontradas em clínicas de ortopedia e medicina esportiva (6) . Os pacientes com sintomas de dor femoropatelar permanece como um dos maiores desafios clínicos em medicina de reabilitação a despeito dos recentes avanços no entendimento e tratamento de diversas condições do joelho (25) . SUMMARYThe vastus medialis obliquus muscle (VMO) performs an important role in the medial patellar stability . However , the recruitment of the lateral components, the vastus lateralis longus (VLL) and vastus laterallis oblique (VLO) is not established. The main purpose of this work was to investigate the electromyographic (EMG) activity of the VMO, VLL and VLO muscles of twenty one health volunteers (X= 23,3 ± DP 2,9), 10 female and eleven males, without clinical pain symptoms or osteomioarticular injuries EMG NICOLET VIKING II was used with eight channels (NICOLET Biomedical Instruments, and bipolar electrodes surface in order to record the electrical activity of VMO, VLL and VLO muscles during a isometric knee extension at 15º and 90º. The EMG data were normalized by maximum voluntary contraction (MIVC) of the knee flexion at 50º has shown that the VLL and VLO muscles demonstrated significant difference in recruitment pattern and they can be considered physiologically distinct. The VMO and VLO muscles performed synchronic and reciprocal role in the patellar stability and the VMO muscle performed higher activity compared with the VLL muscle in isometric knee extension at 90º.

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Anatomy of the junction of the vastus lateralis tendon and the patella.

Cited by 91 publications

References 0 publications

Patellofemoral kinematics during knee flexion-extension: An in vitro study

Patellofemoral kinematics during knee flexion-extension: An in vitro study

A systematic review of anterolateral thigh flap donor site morbidity

Análise funcional dos estabilizadores patelares

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