Kinematics describes human movement in three-planes · PDF fileKinematics describes human...
Transcript of Kinematics describes human movement in three-planes · PDF fileKinematics describes human...
![Page 1: Kinematics describes human movement in three-planes · PDF fileKinematics describes human movement in three-planes and three ... Osteokinematics pertains to the voluntary bone movements](https://reader036.fdocuments.in/reader036/viewer/2022062907/5a9e30547f8b9a36788c75bd/html5/thumbnails/1.jpg)
KneeJointMovement101--OsteokinematicsandArthrokinematics
Therearetwojointsattheknee--tibiofemoralandpatellofemoral.Thetibiofemoraljointexperiencesforcesbetweenthefemurandtibiaandoperatesasamodifiedhingejoint;whereas,thepatellofemoral
saddlejointoperatesprimarilyasanextensormechanismtoincreasequadricepsleverage.
Kinematicsdescribeshumanmovementinthree-planesandthree-axes.
Therelationshipbetweenaplaneanditsaxiscanbeeasilyseenasplane/axisinthecontextofa3Dcoordinatesystem.
![Page 2: Kinematics describes human movement in three-planes · PDF fileKinematics describes human movement in three-planes and three ... Osteokinematics pertains to the voluntary bone movements](https://reader036.fdocuments.in/reader036/viewer/2022062907/5a9e30547f8b9a36788c75bd/html5/thumbnails/2.jpg)
Anexampleoftheseplanes/axesappliedtothekneejoint.
![Page 3: Kinematics describes human movement in three-planes · PDF fileKinematics describes human movement in three-planes and three ... Osteokinematics pertains to the voluntary bone movements](https://reader036.fdocuments.in/reader036/viewer/2022062907/5a9e30547f8b9a36788c75bd/html5/thumbnails/3.jpg)
Itisimperativetounderstandhowbonesmoveinrelationtojoints(Osteokinematics)andthemannerinwhichjointsurfacesmoveinrelationtoadjoiningjoint-surfaces(Arthrokinematics)tounderstandthe
complexityofkneefunction.
Osteokinematicspertainstothevoluntarybonemovementsatsynovialjointsrelativethejoints’centralaxisofrotation.
Thetibiofemoraljointisconsideredtriaxial,movinginthreeplanesaroundthreeaxes,givingitthree
degreesoffreedom–flexion/extension,adduction/abductionandinternal/externalrotation.
![Page 4: Kinematics describes human movement in three-planes · PDF fileKinematics describes human movement in three-planes and three ... Osteokinematics pertains to the voluntary bone movements](https://reader036.fdocuments.in/reader036/viewer/2022062907/5a9e30547f8b9a36788c75bd/html5/thumbnails/4.jpg)
Arthrokinematicsisconcernedwithhowjointsurfacesmoveinrelationtoeach-other–primarilyinvoluntaryroll,glideandspincharacteristicsthatensurestabilityandjointcongruenceduring
movement
Tibiofemoralroll&glidearenecessaryforeffectivetibiofemoralflexionandextension–withoutthemthelargerfemurwouldsimplyrolloffthetibiaand/orvice-versa.
Patellofemoralmovementsareprimarilyarthrokinematicbecauseitisasynovialglidejoint.
![Page 5: Kinematics describes human movement in three-planes · PDF fileKinematics describes human movement in three-planes and three ... Osteokinematics pertains to the voluntary bone movements](https://reader036.fdocuments.in/reader036/viewer/2022062907/5a9e30547f8b9a36788c75bd/html5/thumbnails/5.jpg)
.
CombinedOsteokinematicandArthrokinematicMovementsoftheKneeJoint
CoronalTibiofemoralJoint
![Page 6: Kinematics describes human movement in three-planes · PDF fileKinematics describes human movement in three-planes and three ... Osteokinematics pertains to the voluntary bone movements](https://reader036.fdocuments.in/reader036/viewer/2022062907/5a9e30547f8b9a36788c75bd/html5/thumbnails/6.jpg)
SagittalTibiofemoralJointMovement
CoronalPatellofemoralJointMovement
![Page 7: Kinematics describes human movement in three-planes · PDF fileKinematics describes human movement in three-planes and three ... Osteokinematics pertains to the voluntary bone movements](https://reader036.fdocuments.in/reader036/viewer/2022062907/5a9e30547f8b9a36788c75bd/html5/thumbnails/7.jpg)