The Effect of Thigh Marker Placement on Knee Valgus Angles in Vertical Drop Jumps and Sidestep Cutting

Kam Ming MOK; Eirik KRISTIANSLUND; Tron KROSSHAUG

doi:10.1123/jab.2014-0137

The Effect of Thigh Marker Placement on Knee Valgus Angles in Vertical Drop Jumps and Sidestep Cutting

Kam Ming MOK, Eirik KRISTIANSLUND, Tron KROSSHAUG^*

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

16 Citations (Scopus)

Abstract

Knee valgus angles measured in sidestep cutting and vertical drop jumps are key variables in research on anterior cruciate ligament (ACL) injury causation. These variables are also used to quantify knee neuromuscular control and ACL injury risk. The aims of the current study were to (1) quantify the differences in the calculated knee valgus angles between 6 different thigh marker clusters, (2) investigate the trial ranking based on their knee valgus angles, and (3) investigate the influence of marker clusters on the cross-talk effect. Elite female handball and football players (n = 41) performed sidestep cutting and vertical drop jumping motions. We found systematic differences up to almost 15° of peak valgus between the marker sets in the drop jump test. The Spearman’s rank correlation coefficient varied from .505 to .974 among the 6 marker sets. In addition, the cross-talk effect varied considerably between the marker clusters. The results of the current study indicate that the choice of thigh marker cluster can have a substantial impact on the magnitude of knee valgus angle, as well as the trial ranking. A standardized thigh marker cluster, including nonanatomical landmark, is needed to minimize the variation of the measurement.

Original language	English
Pages (from-to)	269-274
Number of pages	6
Journal	Journal of Applied Biomechanics
Volume	31
Issue number	4
DOIs	https://doi.org/10.1123/jab.2014-0137
Publication status	Published - 2014
Externally published	Yes

Funding

The authors acknowledge the support of the International Society of Biomechanics (ISB) Council for the ISB Student Congress Travel Grant in 2013. The Oslo Sports Trauma Research Center has been established at the Norwegian School of Sport Sciences through generous grants from the Royal Norwegian Ministry of Culture, the South-Eastern Norway Regional Health Authority, the International Olympic Committee, the Norwegian Olympic Committee, and Confederation of Sport and Norsk Tipping AS.

Keywords

motion analysis
knee biomechanics
kinematics
marker cluster

Access to Document

10.1123/jab.2014-0137

Cite this

@article{b2b0351192a84aaea5934003678d8cd8,

title = "The Effect of Thigh Marker Placement on Knee Valgus Angles in Vertical Drop Jumps and Sidestep Cutting",

abstract = "Knee valgus angles measured in sidestep cutting and vertical drop jumps are key variables in research on anterior cruciate ligament (ACL) injury causation. These variables are also used to quantify knee neuromuscular control and ACL injury risk. The aims of the current study were to (1) quantify the differences in the calculated knee valgus angles between 6 different thigh marker clusters, (2) investigate the trial ranking based on their knee valgus angles, and (3) investigate the influence of marker clusters on the cross-talk effect. Elite female handball and football players (n = 41) performed sidestep cutting and vertical drop jumping motions. We found systematic differences up to almost 15° of peak valgus between the marker sets in the drop jump test. The Spearman{\textquoteright}s rank correlation coefficient varied from .505 to .974 among the 6 marker sets. In addition, the cross-talk effect varied considerably between the marker clusters. The results of the current study indicate that the choice of thigh marker cluster can have a substantial impact on the magnitude of knee valgus angle, as well as the trial ranking. A standardized thigh marker cluster, including nonanatomical landmark, is needed to minimize the variation of the measurement.",

keywords = "motion analysis, knee biomechanics, kinematics, marker cluster",

author = "MOK, {Kam Ming} and Eirik KRISTIANSLUND and Tron KROSSHAUG",

year = "2014",

doi = "10.1123/jab.2014-0137",

language = "English",

volume = "31",

pages = "269--274",

journal = "Journal of Applied Biomechanics",

issn = "1065-8483",

publisher = "Human Kinetics Publishers Inc.",

number = "4",

}

TY - JOUR

T1 - The Effect of Thigh Marker Placement on Knee Valgus Angles in Vertical Drop Jumps and Sidestep Cutting

AU - MOK, Kam Ming

AU - KRISTIANSLUND, Eirik

AU - KROSSHAUG, Tron

PY - 2014

Y1 - 2014

N2 - Knee valgus angles measured in sidestep cutting and vertical drop jumps are key variables in research on anterior cruciate ligament (ACL) injury causation. These variables are also used to quantify knee neuromuscular control and ACL injury risk. The aims of the current study were to (1) quantify the differences in the calculated knee valgus angles between 6 different thigh marker clusters, (2) investigate the trial ranking based on their knee valgus angles, and (3) investigate the influence of marker clusters on the cross-talk effect. Elite female handball and football players (n = 41) performed sidestep cutting and vertical drop jumping motions. We found systematic differences up to almost 15° of peak valgus between the marker sets in the drop jump test. The Spearman’s rank correlation coefficient varied from .505 to .974 among the 6 marker sets. In addition, the cross-talk effect varied considerably between the marker clusters. The results of the current study indicate that the choice of thigh marker cluster can have a substantial impact on the magnitude of knee valgus angle, as well as the trial ranking. A standardized thigh marker cluster, including nonanatomical landmark, is needed to minimize the variation of the measurement.

AB - Knee valgus angles measured in sidestep cutting and vertical drop jumps are key variables in research on anterior cruciate ligament (ACL) injury causation. These variables are also used to quantify knee neuromuscular control and ACL injury risk. The aims of the current study were to (1) quantify the differences in the calculated knee valgus angles between 6 different thigh marker clusters, (2) investigate the trial ranking based on their knee valgus angles, and (3) investigate the influence of marker clusters on the cross-talk effect. Elite female handball and football players (n = 41) performed sidestep cutting and vertical drop jumping motions. We found systematic differences up to almost 15° of peak valgus between the marker sets in the drop jump test. The Spearman’s rank correlation coefficient varied from .505 to .974 among the 6 marker sets. In addition, the cross-talk effect varied considerably between the marker clusters. The results of the current study indicate that the choice of thigh marker cluster can have a substantial impact on the magnitude of knee valgus angle, as well as the trial ranking. A standardized thigh marker cluster, including nonanatomical landmark, is needed to minimize the variation of the measurement.

KW - motion analysis

KW - knee biomechanics

KW - kinematics

KW - marker cluster

UR - http://www.scopus.com/inward/record.url?scp=84938322825&partnerID=8YFLogxK

U2 - 10.1123/jab.2014-0137

DO - 10.1123/jab.2014-0137

M3 - Journal Article (refereed)

SN - 1065-8483

VL - 31

SP - 269

EP - 274

JO - Journal of Applied Biomechanics

JF - Journal of Applied Biomechanics

IS - 4

ER -

The Effect of Thigh Marker Placement on Knee Valgus Angles in Vertical Drop Jumps and Sidestep Cutting

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this