1

Musculoskeletal Mechanics

Foot, Ankle,

&Lower Leg

TalocruralJoint Subtalar Joint

LateralMuscles Anterior

Muscles

2

MedialMuscles

PosteriorMuscles

KNEE The Knee

Two Joints:

Tibiofemoral

Patellofemoral

3

4

HIP

MEDIALAdduct

Anterior

Flex

5

Lateral

Abduct

PosteriorExtend

Putting It All Together

6

Shoulder

Muscles

Protectors

Pivoters

Postioners

Propellors

Protectors

Rotator Cuff:Supraspinatus

Infraspinatus

Teres Minor

Subscapularis

Biceps Tendon

7

Rotator Cuff –Lateral

Rotator Cuff –Posterior

Rotator CuffAnterior

Rotator Cuff –Medial

8

Scapular Pivoters

TrapeziusLevator ScapulaeRhomboidsPectoralis MinorSerratus Anterior

Humeral Positioners

Deltoid

9

Humeral Propellors

Pectoralis MajorLatissimus Dorsi

10

ELBOW &FOREARM

Supinator PronatorTeres

11

PronatorQuadratus

WRISTWristExtensors

12

WristExtensors –Close-up

WristFlexors

WristFlexors –Close-up

LUMBAR SPINE

13

Muscles –

Deep

ErectorSpinae

14

CERVICAL SPINE

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