Term
| When does Swing Phase begin? |
|
Definition
|
|
Term
| When does Swing Phase end? |
|
Definition
| Heel contact of the same foot |
|
|
Term
| What percentage of normal Gait Cycle does Swing Phase occupy? |
|
Definition
|
|
Term
| What is the purpose of the Swing Phase? |
|
Definition
| Transporting the foot from one Stance Phase to the next Stance Phase |
|
|
Term
| What does the leg during the first half of Swing Phase as the foot pronates at the STJ, to help the foot clear the ground at Midswing? |
|
Definition
|
|
Term
| What does the STJ joint do during Swing Phase to lengthen the limb and prepare it for Heel Contact Period? |
|
Definition
| The STJ supinates and then pronates to absorb the shock. |
|
|
Term
| What type of rotation is typical of Swing Phase? |
|
Definition
| External rotation for a moment after Toe Off, then Interanl rotation for the remainder fo the Swing Phase of Gait. |
|
|
Term
| T/F The Limb completely rotates during Swing Phase? |
|
Definition
| FALSE, there is still some internal rotation that can still occupr a Contact Period. |
|
|
Term
| During Swing Phase, supination of STJ is paired with internal rotation of the leg. This is not normal. Why? |
|
Definition
| B/c rotation during Swing Phase is done by active muscle contraction and NONE by Ground Reactive Forces. |
|
|
Term
| What is the differenc between muscle contraction during Swing Phase vs. Contact Period? |
|
Definition
| Muscle contraction creates motion during Swing Phase and Stability during foot contact. |
|
|
Term
| What happens just before Toe Off in the STJ? |
|
Definition
|
|
Term
| T/F The foot doesn't become pronated until shortly AFTER Toe Off, (about 70% of the full Gait Cycle)? |
|
Definition
|
|
Term
| T/F The continues to pronate a small amount until Midswing? |
|
Definition
|
|
Term
| Besides dorsiflexion at the ankle joint, what other motion occures to get the toes to clear the ground? |
|
Definition
| Slight dorsiflexion at the STJ |
|
|
Term
| When does Contact Period begin? |
|
Definition
| Heel contact of the same foot |
|
|
Term
| When does Contact Period end? |
|
Definition
| FF loading/Toe Off of the opposite foot. |
|
|
Term
| How much of the Stance Phase does Contact Peirod occupy? |
|
Definition
|
|
Term
| In the normal foot what action is the STJ undergoing through all the Contact Period of Gait? |
|
Definition
|
|
Term
| T/F In the normal foot, Pronation of the STJ should only occur during the Contact Period? |
|
Definition
|
|
Term
| T/F The definitions of pronation for Open Kinetic Chain is different form the Closed Kinetic Chain? |
|
Definition
|
|
Term
| The Open Kinetic Chain definition refers to motion of what structure? |
|
Definition
|
|
Term
| What motions occur during Open Kinetic Chain pronation of the Talus? |
|
Definition
| Plantarflexion, Inversion, and Adduction |
|
|
Term
| During Closed Kinetic Chain Pronation what motion occurs? |
|
Definition
| Eversion of the Calcaneus ONLY (thus, no abduction, due to FF contact or dorsiflexion due to Lateral Arch and stability of Lateral Column.) |
|
|
Term
| What is the "Window to the STJ?" |
|
Definition
| Calcaneus (We can tell what the STJ is doing by watching the Calcaneus) |
|
|
Term
| What is the motion of the Talus during CKC pronation? |
|
Definition
| Adduction and Plantarflexion |
|
|
Term
| T/F We will see inversion of the Talus during CKC pronation? |
|
Definition
|
|
Term
| Can normal gait occur with an inverted Talus during CKC pronaiton? |
|
Definition
|
|
Term
| T/F in CKC pronation we still see tri-plane motion occuring? |
|
Definition
|
|
Term
| What motions do we see in the Calcaneus and Talus in CKC pronation? |
|
Definition
| Eversion of the Calcaneus and Adduciton and Plantarflexion of the Talus |
|
|
Term
| T/F Most of the shock absorption occurs in the STJ? |
|
Definition
| FALSE, in the knee due to flexion |
|
|
Term
| What does pronation of the STJ do to the foot to dissipate shock? |
|
Definition
| Turns is into the "Mobile Adapter" |
|
|
Term
| What happens to the foot to make it the "Mobile Adapter?" |
|
Definition
| Pronation of the STJ - allows a laxness in the FF allowing it to quickly adapt to terrain when the FF contacts the ground. |
|
|
Term
| Is the term "Loose bag of bones" very accurate of the Mobile Adapter? |
|
Definition
| No, it is a Gross Overstatement. |
|
|
Term
| What cause the STJ to pronate through out the Contact Period? |
|
Definition
| Internal Rotation of the Leg |
|
|
Term
| The STJ converts ___________________ from internal rotation of the leg to ____________________. |
|
Definition
| Transverse Plane Torque/ Frontal Plane Torque |
|
|
Term
| Why is the conversion of internal rotation to Frontal Plane Torque so vital? |
|
Definition
| B/c the foot is able to dissipate or adapt to this torque b/c more motion is available in the foot on the frontal plane overall. (There are less Shear Force Vectors to resist frontal plane motions and Joints are designed to handle frontal plane motions better) |
|
|
Term
| What is the position of the Hip at the start of Contact Period? |
|
Definition
|
|
Term
| What is the position of the Hip during Contact Phase? |
|
Definition
|
|
Term
| What does the pelvis and thigh do during the Contact period resulting in internal rotation of the Hip? |
|
Definition
|
|
Term
| T/F The Pelvis rotates farther and faster then the Thigh? |
|
Definition
| FALSE, thigh farther and faster than the pelvis. |
|
|
Term
| What is the position of the Knee at the start of Contact Period? |
|
Definition
|
|
Term
| What does the Knee do during the Contact Period? |
|
Definition
|
|
Term
| Why is Knee flexion so improtant to the Contact Period? |
|
Definition
| Assists in absorbing Shock through the leg. |
|
|
Term
| T/F The Tibia internally rotates farther and faster than the thigh in the transvers plane resulting in internal rotation at the knee? |
|
Definition
|
|
Term
| What does the Ankle Joint do from Heel Strike to FF Contact in the Contact Period? |
|
Definition
|
|
Term
| How is the Ankle Joint positioned prior to Contact Period? |
|
Definition
|
|
Term
| B/c of the anatomy of the trochlea of the talus, as the foot planarflexes at the ankle joint it will also _________________. |
|
Definition
|
|
Term
| Vertical Ground Reactive Forces have their 1st peak when? |
|
Definition
| The end of the Contact Period |
|
|
Term
| What casues a drop off of vertical forces so that the forces are more evenly though the foot? |
|
Definition
|
|
Term
| T/F Contack Period is a single limb support period? |
|
Definition
|
|
Term
| What motions cause linear acceleration? |
|
Definition
| Transverse and Sagittal plane motion |
|
|
Term
| What does the transvers rotation of the trunk an dskeletal portions result in? |
|
Definition
|
|
Term
| What does Sagittal Plane motion of the skeletal parts shift the center of gravity anterior to the center of the foot support? |
|
Definition
| Fall forward, muscles will act to control the fall so the body progresses forward. |
|
|
Term
| T/F The FF is influence by muscle activity after the FF touches the ground? |
|
Definition
|
|
Term
| What is the position of the FF at Heel Strike? |
|
Definition
| Supinated (inversion) about the LMTJ axis due to the Anterior Tibialis M contracting. (Pronation or Abductiion and dorsiflexion, around OMTJ Axis) |
|
|
Term
| What does pronation of the OMTJ Axis do? |
|
Definition
| Locks the FF (B/c of this the Head of the 5th Met contacts the ground first) |
|
|
Term
| What allows for smooth loading from lateral to medial of the FF? |
|
Definition
| GRF and relxation of the Tibialis Ant M |
|
|
Term
| Eversion of the Calcaneus causes what motion in the Medial Column? |
|
Definition
| Dorsiflexion (Supination of LMTJ Axis) |
|
|
Term
| What is the position of the LMTJ and OMTJ as the FF loads? |
|
Definition
| OMTJ is pronated and LMTJ is supinated |
|
|
