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Kay Cerny - One of the best experts on this subject based on the ideXlab platform.
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vastus medialis oblique vastus lateralis Muscle activity ratios for selected exercises in persons with and without patellofemoral pain syndrome
Physical Therapy, 1995Co-Authors: Kay CernyAbstract:Background and Purpose. The purpose of this study was to determine which of selected exercises with and without the feet free to move would enhance vastus medialis oblique Muscle (VMO) activity over that of the vastus lateralis Muscle (VL) and whether the use of taping would increase VMO activity. Subjects. Twenty-one subjects without patellofemoral pain (PFP) syndrome and 10 subjects with PFP syndrome, aged 19 to 43 years (X=26, SD=7), participated. Methods. Subjects were studied for the normalized, integrated electromyographic (IEMG) activity of their VMO, VL, and Adductor Magnus Muscle (subjects without PFP syndrome) and the VMO/VL ratio using wire electrodes. Results. One exercise demonstrated greater activation of the VMO over the VL when compared with similar exercises in subjects without PFP syndrome. The mean VMO/VL activity ratio for terminal knee extension was 1.2 (SD=0.5) with the hip medially rotated and 1.0 (SD=0.4) with the hip laterally rotated. Although subjects reported that patellar taping decreased pain 94% during the step-down exercise, the VMO/VL ratio was not changed. Conclusion and Discussion. The results suggest that neither exercises purported to selectively activate VMO activity nor patellar taping improve the VMO/VL ratio over similar exercises.
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vastus medialis oblique vastus lateralis Muscle activity ratios for selected exercises in persons with and without patellofemoral pain syndrome
Physical Therapy, 1995Co-Authors: Kay CernyAbstract:Background and Purpose. The purpose of this study was to determine which of selected exercises with and without the feet free to move would enhance vastus medialis oblique Muscle (VMO) activity over that of the vastus lateralis Muscle (W) and whether the use of taping would increase VMO activity. Subjects. Twenty-one subjects without patellofemoral pain (PFP) syndrome and 10 subjects with PFP syndrome, aged 19 to 43 years @=26, SD= 71, participated. Metbods. Subjects were studied for the normalized, integrated electromyographic (IEMG) activity of their MO, W, and Adductor Magnus Muscle (subjects without PFP syndrome) and the VMOm ratio using wire electrodes. Results. One exercise demonstrated greater activation of the VMO over the W when compared with similar exercises in subjects without PFP syndrome. The mean VMOhT activity ratio for terminal knee extension was 1.2 (SD= 0.5) with the hip medially rotated and 1.0 (SD= 0.4) with the hip laterally rotated. Although subjects reported that patellar taping decreased pain 94% during the step-down exercise, the VMOm ratio was not changed. Conclusion and Discussforr The results suggest that neither exercises purported to selectively activate VMO activity nor patellar taping improve the VMOm ratio over similar exercises. lCerny K. Vastus medialis oblique/vastus lateralis Muscle activity ratios for selected exercises in persons with and without patellofemoral pain syndrome. Phys Ther. 1995; 75672- 683.1
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Vastus Medialis Oblique/Vastus Lateralis Muscle Activity Ratios for Selected Exercises in Persons With and Without Patellofemoral Pain Syndrome
Physical therapy, 1995Co-Authors: Kay CernyAbstract:Background and Purpose. The purpose of this study was to determine which of selected exercises with and without the feet free to move would enhance vastus medialis oblique Muscle (VMO) activity over that of the vastus lateralis Muscle (W) and whether the use of taping would increase VMO activity. Subjects. Twenty-one subjects without patellofemoral pain (PFP) syndrome and 10 subjects with PFP syndrome, aged 19 to 43 years @=26, SD= 71, participated. Metbods. Subjects were studied for the normalized, integrated electromyographic (IEMG) activity of their MO, W, and Adductor Magnus Muscle (subjects without PFP syndrome) and the VMOm ratio using wire electrodes. Results. One exercise demonstrated greater activation of the VMO over the W when compared with similar exercises in subjects without PFP syndrome. The mean VMOhT activity ratio for terminal knee extension was 1.2 (SD= 0.5) with the hip medially rotated and 1.0 (SD= 0.4) with the hip laterally rotated. Although subjects reported that patellar taping decreased pain 94% during the step-down exercise, the VMOm ratio was not changed. Conclusion and Discussforr The results suggest that neither exercises purported to selectively activate VMO activity nor patellar taping improve the VMOm ratio over similar exercises. lCerny K. Vastus medialis oblique/vastus lateralis Muscle activity ratios for selected exercises in persons with and without patellofemoral pain syndrome. Phys Ther. 1995; 75672- 683.1
F. Gottschalk - One of the best experts on this subject based on the ideXlab platform.
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The importance of soft tissue stabilization in trans-femoral amputation
Der Orthopäde, 2016Co-Authors: F. GottschalkAbstract:Transfemorale Amputationen haben bei proximaleren Amputationshöhen das Problem der sekundären Entwicklung in eine Beuge- und Abduktionsfehlstellung. Dies ist durch das Muskelungleichgewicht, speziell den Verlust der Adduktorenansätze bei erhaltenen Abduktorenansätzen bedingt. In der Prothesenversorgung verursacht dies erhebliche Probleme. Die Myoplastik mit Insertion des distal abgelösten Musculus adduktor Magnus an die laterale Femurcorticalis, die hier vorstellt wird, ergibt einen gut muskulär balancierten und kräftigeren Stumpf, die Prothesenführung ist deutlich verbessert. Transfemoral amputations with more proximal amputation levels have the problem of secondary development into flexion and abduction contractures. This is induced by Muscle imbalance, especially the loss of Adductor Muscle insertions when abductor Muscle insertions are preserved. This causes considerable problems when fitting prosthetics. Myodesis with insertion of the distally detached Adductor Magnus Muscle to the lateral femoral cortex, introduced here, results in a stronger stump with good Muscle balance, and prosthetics fitting is significantly improved.
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The importance of soft tissue stabilization in trans-femoral amputation
Der Orthopäde, 2016Co-Authors: F. GottschalkAbstract:Transfemoral amputations with more proximal amputation levels have the problem of secondary development into flexion and abduction contractures. This is induced by Muscle imbalance, especially the loss of Adductor Muscle insertions when abductor Muscle insertions are preserved. This causes considerable problems when fitting prosthetics. Myodesis with insertion of the distally detached Adductor Magnus Muscle to the lateral femoral cortex, introduced here, results in a stronger stump with good Muscle balance, and prosthetics fitting is significantly improved. Transfemorale Amputationen haben bei proximaleren Amputationshöhen das Problem der sekundären Entwicklung in eine Beuge- und Abduktionsfehlstellung. Dies ist durch das Muskelungleichgewicht, speziell den Verlust der Adduktorenansätze bei erhaltenen Abduktorenansätzen bedingt. In der Prothesenversorgung verursacht dies erhebliche Probleme. Die Myoplastik mit Insertion des distal abgelösten Musculus adduktor Magnus an die laterale Femurcorticalis, die hier vorstellt wird, ergibt einen gut muskulär balancierten und kräftigeren Stumpf, die Prothesenführung ist deutlich verbessert.
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The importance of soft tissue stabilization in trans-femoral amputation : English version.
Der Orthopade, 2016Co-Authors: F. GottschalkAbstract:Transfemoral amputations with more proximal amputation levels have the problem of secondary development into flexion and abduction contractures. This is induced by Muscle imbalance, especially the loss of Adductor Muscle insertions when abductor Muscle insertions are preserved. This causes considerable problems when fitting prosthetics. Myodesis with insertion of the distally detached Adductor Magnus Muscle to the lateral femoral cortex, introduced here, results in a stronger stump with good Muscle balance, and prosthetics fitting is significantly improved.
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Relevanz der Weichteilstabilisierung bei transfemoraler Amputation
Der Orthopäde, 2015Co-Authors: F. GottschalkAbstract:Bei weiter proximalen transfemoralen Amputationen besteht das Problem der sekundären Entwicklung einer Beuge- und Abduktionsfehlstellung, bedingt durch die muskuläre Dysbalance, speziell durch den Verlust der Adduktorenansätze bei erhaltenen Abduktorenansätzen. In der Prothesenversorgung verursacht dies erhebliche Probleme. Das im Beitrag vorgestellte Verfahren – Myodese mit Insertion des distal abgelösten M. Adductor Magnus an die laterale Femurkortikalis – resultiert in einem muskulär gut ausbalancierten und kräftigeren Stumpf sowie in einer deutlich verbesserten Prothesenführung. Transfemoral amputations with more proximal amputation levels have the problem of secondary development into flexion and abduction contractures. This is induced by Muscle imbalance, especially the loss of Adductor Muscle insertions when abductor Muscle insertions are preserved. This causes considerable problems when fitting prosthetics. Myodesis with insertion of the distally detached Adductor Magnus Muscle to the lateral femoral cortex, introduced here, results in a stronger stump with good Muscle balance, and prosthetics fitting is significantly improved.
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Die Wichtigkeit der Stabilisierung des Weichgewebes bei transfemoraler Amputation
Orthopade, 2015Co-Authors: F. GottschalkAbstract:Transfemoral amputations with more proximal amputation levels have the problem of secondary development into flexion and abduction contractures. This is induced by Muscle imbalance, especially the loss of Adductor Muscle insertions when abductor Muscle insertions are preserved. This causes considerable problems when fitting prosthetics. Myodesis with insertion of the distally detached Adductor Magnus Muscle to the lateral femoral cortex, introduced here, results in a stronger stump with good Muscle balance, and prosthetics fitting is significantly improved.
M Takizawa - One of the best experts on this subject based on the ideXlab platform.
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why Adductor Magnus Muscle is large the function based on Muscle morphology in cadavers
Scandinavian Journal of Medicine & Science in Sports, 2014Co-Authors: M Takizawa, Daisuke Suzuki, Mineko Fujimiya, Eiichi UchiyamaAbstract:The aim of this study was to examine anatomical properties of the Adductor Magnus through a detailed classification, and to hypothesize its function and size to gather enough information about morphology. Ten cadaveric specimens of the Adductor Magnus were used. The Muscle was separated into four portios (AM1–AM4) based on the courses of the corresponding perforating arteries, and its volume, Muscle length, Muscle fiber length and physiological cross-sectional area were assessed. The architectural characteristics of these four portions of the Adductor Magnus were then classified with the aid of principal component analysis. The results led us into demarcating the most proximal part of the Adductor Magnus (AM1) from the remaining parts (AM2, AM3, and AM4). Classification of the Adductor Magnus in terms of architectural characteristics differed from the more traditional anatomical distinction. The AM2, AM3, and AM4, having longer Muscle fiber lengths than the AM1, appear to be designed as displacers for moving the thigh through a large range of motion. The AM1 appears instead to be oriented principally toward stabilizing the hip joint. The large mass of the Adductor Magnus should thus be regarded as a complex of functionally differentiable Muscle portions.
Eiichi Uchiyama - One of the best experts on this subject based on the ideXlab platform.
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why Adductor Magnus Muscle is large the function based on Muscle morphology in cadavers
Scandinavian Journal of Medicine & Science in Sports, 2014Co-Authors: M Takizawa, Daisuke Suzuki, Mineko Fujimiya, Eiichi UchiyamaAbstract:The aim of this study was to examine anatomical properties of the Adductor Magnus through a detailed classification, and to hypothesize its function and size to gather enough information about morphology. Ten cadaveric specimens of the Adductor Magnus were used. The Muscle was separated into four portios (AM1–AM4) based on the courses of the corresponding perforating arteries, and its volume, Muscle length, Muscle fiber length and physiological cross-sectional area were assessed. The architectural characteristics of these four portions of the Adductor Magnus were then classified with the aid of principal component analysis. The results led us into demarcating the most proximal part of the Adductor Magnus (AM1) from the remaining parts (AM2, AM3, and AM4). Classification of the Adductor Magnus in terms of architectural characteristics differed from the more traditional anatomical distinction. The AM2, AM3, and AM4, having longer Muscle fiber lengths than the AM1, appear to be designed as displacers for moving the thigh through a large range of motion. The AM1 appears instead to be oriented principally toward stabilizing the hip joint. The large mass of the Adductor Magnus should thus be regarded as a complex of functionally differentiable Muscle portions.
Young Kwon Cho - One of the best experts on this subject based on the ideXlab platform.
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CT Angiographic Evaluation of Congenital Anastomoses between Femoropopliteal Vein and Deep Femoral Vein: Types and Incidence.
Journal of vascular and interventional radiology : JVIR, 2019Co-Authors: Eung Tae Kim, Soon Young Song, Young Kwon ChoAbstract:Abstract Purpose To evaluate congenital anastomotic channels between femoropopliteal veins and deep femoral veins with the use of computed tomographic (CT) venography. Materials and Methods CT venography of 488 limbs in 244 patients (105 men; mean age, 61 y; age range, 18–96 y) performed between January 2016 and December 2016 was retrospectively evaluated. The presence or absence of anastomotic channels (> 3 mm in diameter) connecting a femoropopliteal vein to a deep femoral vein was determined, and the observed channels were classified based on their location and course. Results Two types of anastomotic channels were observed in 32 patients (13%): a persistent sciatic vein (PSV) in 24 limbs of 15 patients (6%) and a retrofemoral channel (RFC) in 22 limbs of 19 patients (8%). A PSV anastomosed with the popliteal vein in the popliteal fossa, coursed posterior to the Adductor Magnus Muscle, and drained into the deep femoral vein. An RFC anastomosed with the femoral vein at the level of the Adductor hiatus, coursed posterior to the femoral shaft, and drained into the deep femoral vein. PSVs and RFCs were of similar size or larger than adjacent femoropopliteal veins in 50% (12 of 24) and 22% of limbs (4 of 22), respectively. Conclusions Anastomotic channels connecting a femoropopliteal vein to a deep femoral vein are not a rare variation and may have an important role in collateral venous drainage of the lower extremities.