Comparison of 2-Dimensional Measurement Techniques for Predicting Knee Angle and Moment During a Drop Vertical Jump

Mizner, Ryan L.; Chmielewski, Terese L.; Toepke, John J.; Tofte, Kari B.

doi:10.1097/01.jsm.0000411394.82411.06

Cited by 22 publications

(38 citation statements)

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“…The negative correlation between nKSD and the 3D variables indicates that lower nKSD values were demonstrative of valgus angles while a larger nKSD indicated a more neutral or varus angles. These results corroborate previous studies supporting the use of 2D assessment in athletic environments as relationship of 2D data measures with valgus angles were reported optimistically [6,5,22]. Our study contributes to this body of literature by providing a full range of frontal plane motion (i.e., valgus and varus angles) during a routinely performed jumping task.…”

Section: Discussionsupporting

confidence: 81%

3-Dimensional Versus 2-Dimensional Comparison of Knee Valgus Collapse during Vertical Jump: Clinical Implications for ACL Risk of Injury Assessment

Cesar¹,

Pfeifer²,

Burnfield³

2017

J Sports Med Ther

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Time-effi cient screening of lower extremity biomechanics to identify potential injurious movement patterns is crucial within athletic medicine settings. When considering biomechanical risk factors for anterior cruciate ligament injuries, several screening tests have been used to assess dynamic knee valgus. Current methods involving 3-dimensional motion capture systems are considered gold standard for such assessment; however, these methods are time consuming and require expensive materials. This study investigated the use of 2-dimentional kinematic evaluation during a standardized vertical jump athletic assessment to screen for potential lower extremity risk of injury. 50 collegiate athletes, 25 male and 25 female, from various sports participated in the study. The vertical jump was chosen because it is a common performance evaluation test that is regularly performed several times a year, providing consistent opportunities for screening while not creating additional obligations for the student athletes. Results showed that the 2-dimentional evaluation method had strong correlations (P<0.0001) with the gold standard 3-dimensional evaluation, suggesting that an accelerated 2-dimentional screening process can be used as a fi rst step to screen for potential injurious lower extremity movement patterns.

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Section: Discussionsupporting

confidence: 81%

3-Dimensional Versus 2-Dimensional Comparison of Knee Valgus Collapse during Vertical Jump: Clinical Implications for ACL Risk of Injury Assessment

Cesar¹,

Pfeifer²,

Burnfield³

2017

J Sports Med Ther

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“…16,36,38,44,45 The aim of this study was therefore to test whether 5 carefully selected kinematic and kinetic variables were associated with future ACL injuries in a large cohort of Norwegian female elite soccer and handball players. Furthermore, we wanted to assess whether the VDJ test can be recommended as a screening test to identify players with increased injury risk.…”

Section: Discussionmentioning

confidence: 99%

The Vertical Drop Jump Is a Poor Screening Test for ACL Injuries in Female Elite Soccer and Handball Players

et al. 2016

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Dette er siste tekst-versjon av artikkelen, og den kan inneholde små forskjeller fra forlagets pdf-versjon. Forlagets pdf-versjon finner du på www.sage.com: http://dx.doi.org/10.1177/0363546515625048 This is the final text version of the article, and it may contain minor differences from the journal's pdf version. Background: The evidence linking knee kinematics and kinetics during a vertical drop jump (VDJ) to anterior cruciate ligament (ACL) injury risk is restricted to a single small sample. Still, the VDJ test continues to be advocated for clinical screening purposes.

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“…Mizner et al 24 reported that a knee-to-ankle width ratio (distance between the knees divided by the distance between the ankles) represented 3D frontal-plane knee alignment better than the frontal-plane projection angle, accounting for 35% of its variance. Post hoc analysis of our data revealed the 2D measure of frontalplane knee excursion that we used to be highly correlated with the knee-to-ankle separation ratio as described by Mizner et al 24 (r ¼ 0.73, P , .001). Furthermore, this kneeto-ankle separation ratio was different among participants with different visual ratings of frontal-plane knee movement (v 2 ¼ 11.75, P ¼ .003).…”

Section: Discussionmentioning

confidence: 99%

“…The location of the lateral epicondyle was estimated using available visual landmarks, such as the width of the lateral aspect of the distal thigh, the lateral aspect of the patella, the fibular head, and the outline of the iliotibial band. 24 After the location of the lateral epicondyle was determined, the proximal arm was extended over the lateral midline of the thigh toward the perceived location of the greater trochanter, and the distal arm was extended along the lateral midline of the leg toward the perceived location of the lateral malleolus ( Figure 6). The location of the greater trochanter was estimated using the width of the lateral aspect of the proximal thigh and the contour of the gluteus maximus, and the location of the lateral malleolus was estimated using the width of the lateral aspect of the distal leg and the contour of the upper part of the shoe.…”

Section: Tests and Measuresmentioning

confidence: 99%

“…The location of the greater trochanter was estimated using the width of the lateral aspect of the proximal thigh and the contour of the gluteus maximus, and the location of the lateral malleolus was estimated using the width of the lateral aspect of the distal leg and the contour of the upper part of the shoe. 24 The hip-angle measurement was taken by placing the point of the angle over what the examiner perceived to be the location of the greater trochanter; the proximal arm was extended along the trunk toward the perceived location of the base of the neck, and the distal arm was extended along the lateral midline of the thigh toward the perceived location of the lateral epicondyle ( Figure 6). All measurements were repeated for each of the 3 jump-landing repetitions, and the average was used for data analysis.…”

Section: Tests and Measuresmentioning

confidence: 99%

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Agreement Between Visual Assessment and 2-Dimensional Analysis During Jump Landing Among Healthy Female Athletes

Rabin

Einstein

Kozol

2018

Journal of Athletic Training

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Context: Altered movement patterns, including increased frontal-plane knee movement and decreased sagittal-plane hip and knee movement, have been associated with several knee disorders. Nevertheless, the ability of clinicians to visually detect such altered movement patterns during high-speed athletic tasks is relatively unknown.Objective: To explore the association between visual assessment and 2-dimensional (2D) analysis of frontal-plane knee movement and sagittal-plane hip and knee movement during a jump-landing task among healthy female athletes.Design: Cross-sectional study. Setting: Gymnasiums of participating volleyball teams. Patients or Other Participants: A total of 39 healthy female volleyball players (age ¼ 21.0 6 5.2 years, height ¼ 172.0 6 8.6 cm, mass ¼ 64.2 6 7.2 kg) from Divisions I and II of the Israeli Volleyball Association.Main Outcome Measure(s): Frontal-plane knee movement and sagittal-plane hip and knee movement during jump landing were visually rated as good, moderate, or poor based on previously established criteria. Frontal-plane knee excursion and sagittal-plane hip and knee excursions were measured using free motion-analysis software and compared among athletes with different visual ratings of the corresponding movements.Results: Participants with different visual ratings of frontalplane knee movement displayed differences in 2D frontal-plane knee excursion (P , .01), whereas participants with different visual ratings of sagittal-plane hip and knee movement displayed differences in 2D sagittal-plane hip and knee excursions (P , .01).Conclusions: Visual ratings of frontal-plane knee movement and sagittal-plane hip and knee movement were associated with differences in the corresponding 2D hip and knee excursions. Visual rating of these movements may serve as an initial screening tool for detecting altered movement patterns during jump landings.

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Comparison of 2-Dimensional Measurement Techniques for Predicting Knee Angle and Moment During a Drop Vertical Jump

Cited by 22 publications

References 0 publications

3-Dimensional Versus 2-Dimensional Comparison of Knee Valgus Collapse during Vertical Jump: Clinical Implications for ACL Risk of Injury Assessment

3-Dimensional Versus 2-Dimensional Comparison of Knee Valgus Collapse during Vertical Jump: Clinical Implications for ACL Risk of Injury Assessment

The Vertical Drop Jump Is a Poor Screening Test for ACL Injuries in Female Elite Soccer and Handball Players

Agreement Between Visual Assessment and 2-Dimensional Analysis During Jump Landing Among Healthy Female Athletes

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