Influence of knee alignment on quadriceps cross-sectional area

Sogabe, Atsushi; Mukai, Nobuhiko; Miyakawa, Shin; Mesaki, Noboru; Maeda, Kengo; Yamamoto, Tadashi; Gallagher, Patricia A.; Schrager, Matt; Fry, Andrew C.

doi:10.1016/j.jbiomech.2009.06.022

Cited by 23 publications

(25 citation statements)

References 30 publications

(39 reference statements)

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“…To remove the influence that severe frontal plane knee malalignments have on KOA risk, participants were excluded if they exhibited a varus or valgus knee alignment greater than 101. A small range of values has been reported as ''normal'' frontal plane knee joint alignment (Moreland et al, 1987;Sogabe et al, 2009) and in obese individuals ''normal'' alignment tends towards abnormally large Q-angles and valgus alignment relative to controls (Messier et al, 2000), yet medial compartment KOA is still an issue. Therefore, a range of 7 101 from 1801 was used to account for the confounding factor of increased tissue thickness over the joints of the obese women while still excluding moderate-to-severe malalignments.…”

Section: Methodsmentioning

confidence: 99%

Lateral wedges decrease biomechanical risk factors for knee osteoarthritis in obese women

Russell

Hamill

2011

Journal of Biomechanics

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Section: Methodsmentioning

confidence: 99%

Lateral wedges decrease biomechanical risk factors for knee osteoarthritis in obese women

Russell

Hamill

2011

Journal of Biomechanics

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“…Sogabe et al (2009) found different cross-sectional areas in the quadriceps muscles with different knee alignments. They suggested that knees with varus or valgus deformation should have poorer muscle function compared to normally aligned knees.…”

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confidence: 88%

Moderate varus/valgus malalignment after total knee arthroplasty has little effect on knee function or muscle strength

Stučinskas¹,

Robertsson²,

Širka³

et al. 2015

Acta Orthopaedica

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Background and purpose — Postoperative muscle strength and component alignment are important factors affecting functional results after total knee arthroplasty (TKA). We are not aware of any studies that have investigated the relationship between them. We therefore investigated whether coronal malalignment of the mechanical axis and/or of individual implant components would affect knee muscle strength and function 1 year after TKA surgery.Patients and methods — We included 120 consecutive osteoarthritis (OA) patients admitted for TKA. Preoperative active range of motion (ROM) of the knee, patient age, sex, and BMI were recorded and the Knee Society score (KSS) and knee joint extensor/flexor muscle strength were assessed. At 1-year follow-up, the mechanical and coronal component alignment was measured from a postoperative long standing radiograph, and ROM, KSS, and muscle strength measurements were taken in 91 patients. Functional outcome and muscle strength measurements were compared between normally aligned and malaligned TKA groups.Results — 29 of 91 TKAs were malaligned, i.e. they deviated more than 3° from the neutral mechanical axis. 18 femoral components and 15 tibial components were malaligned. Before surgery, the malaligned and normally aligned groups were similar regarding sex distribution, BMI, ROM, KSS, and muscle strength. At the 1-year follow-up, the differences between the groups regarding knee joint function and muscle strength were small, not statistically significant, and barely clinically relevant.Interpretation — Moderate varus/valgus malalignment of the mechanical axis or of individual components has no relevant clinical effect on function or muscle strength 1 year after TKA surgery.

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“…The within-trial reliability of this procedure has been found to be excellent (ICC = 0.99) (28). (d) Vastus lateralis-While the cross-sectional area of VL is similar to vastus medialis (VM) (33), VL was chosen as the representative muscle of the quadriceps because of its potentially increased activation in sailing (1) and its use in previous related research (6). Correct hiking technique demands the feet to be positioned together, and when the feet are turned outward, the VM to VL ratio has been found to decrease in controls (25).…”

Section: Selected Strength and Conditioning Exercises And Maximalmentioning

confidence: 99%

Levels of Muscle Activation in Strength and Conditioning Exercises and Dynamometer Hiking in Junior Sailors

Burnett

Wee²,

Xie³

et al. 2012

Journal of Strength and Conditioning Research

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Although strength and conditioning exercises have been prescribed to enhance performance and prevent injury in sailors, little is known about these exercises in comparison to the demands placed on the sailor's musculature while hiking maximally. Because of the difficulty in collecting hiking-related data on water, a 3-minute maximal hiking test (HM180) has been previously developed for use in the laboratory setting. There were 2 aims of this study. The first aim was to determine whether discriminative validity could be shown for the HM180 test in a group of junior sailors of differing ability level and gender. The second aim was to determine whether differences in muscle activation existed between selected strength and conditioning exercises and the HM180 test. Twenty-nine adolescent boy and girl sailors aged between 14 and 16 years from the Singaporean National Byte Class training squad (n = 12) and the Singapore High Participation Group (n = 17) were recruited for this study. The average levels of normalized muscle activation in selected lower limb and trunk muscles in 4 selected strength and conditioning exercises (leg extension, back squat, and back extension exercises, a 30-second hiking hold) and a maximal 3-minute hiking test (the HM180 test) were quantified. Discriminative validity of the HM180 test was shown, and it was confirmed that the strength and conditioning exercises provide an overload stimulus for the HM180 test. Further, similar levels of muscle activation were found for the vastus lateralis in the leg extension and back squat exercises, and the superficial lumbar multifidus in the back extension and back squat exercises. This study has the potential to inform the design of strength and conditioning programs for junior sailors.

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Influence of knee alignment on quadriceps cross-sectional area

Cited by 23 publications

References 30 publications

Lateral wedges decrease biomechanical risk factors for knee osteoarthritis in obese women

Lateral wedges decrease biomechanical risk factors for knee osteoarthritis in obese women

Moderate varus/valgus malalignment after total knee arthroplasty has little effect on knee function or muscle strength

Levels of Muscle Activation in Strength and Conditioning Exercises and Dynamometer Hiking in Junior Sailors

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