Kinesiology Joint Movements
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Questions and Answers

What are the basic osteokinematic movements?

  • Extension (correct)
  • Adduction (correct)
  • Flexion (correct)
  • Translation

What does osteokinematics refer to?

Movement of bones

Which of the following are arthrokinematic motions?

  • Spin (correct)
  • Glide (correct)
  • Twist
  • Roll (correct)

What is the description of a roll in arthrokinematics?

<p>Rotational movement where one bone rolls on another</p> Signup and view all the answers

What type of motion is depicted by sliding?

<p>Linear</p> Signup and view all the answers

The direction of the roll is the same as the direction of the moving bone.

<p>True (A)</p> Signup and view all the answers

What happens during a convex on concave motion?

<p>The roll and slide are opposite.</p> Signup and view all the answers

What are the two types of movement described in arthrokinematics?

<p>Rotational and translational</p> Signup and view all the answers

What is necessary for full osteokinematic motion?

<p>All three arthrokinematic motions (roll, glide, spin)</p> Signup and view all the answers

What does the concave-convex law state?

<p>Roll and glide must occur together (C)</p> Signup and view all the answers

What is an open kinematic chain?

<p>A chain where the distal segment is free and not fixed.</p> Signup and view all the answers

What characterizes a closed kinematic chain?

<p>The distal segment is fixed to the earth or another immovable object.</p> Signup and view all the answers

What type of motion does angular movement refer to?

<p>Increase or decrease the angle between two bones.</p> Signup and view all the answers

Describe the spin motion in arthrokinematics.

<p>Rotation of a moveable joint surface on a stable joint surface.</p> Signup and view all the answers

Flashcards

Osteokinematics

These are the deliberate, voluntary movements we can make with our joints, like bending your elbow or raising your arm.

Arthrokinematics

These movements focus on the way the bones move within the joint itself, involving rolling, sliding, and spinning.

Roll (Arthrokinematic Motion)

One bone rotates on another, creating new contact points. Think of a tire rolling on the road.

Glide (Slide) (Arthrokinematic Motion)

One joint surface glides over another, creating a sliding action. Think of a hockey puck sliding on ice.

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Spin (Arthrokinematic Motion)

One bone spins on another, maintaining contact at the same point. Think of a top spinning.

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Rolling Direction

Rolling always follows the direction of the moving bone, regardless of its shape.

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Convex on Concave Dynamics

When a convex surface moves on a concave surface, the rolling and gliding motions move in opposite directions.

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Concave on Convex Dynamics

When a concave surface moves on a convex surface, the rolling and gliding motions move in the same direction.

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Open Kinematic Chain

The end of a limb is free to move without any fixed point, like swinging your arm.

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Closed Kinematic Chain

The end of a limb is fixed, allowing the joint to move at the other end, like doing push- ups.

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Arthrokinematics for Osteokinematic Movement

All three arthrokinematic motions (roll, slide, spin) must occur together to achieve full osteokinematic motion.

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Concave Surface Sliding

In concave surfaces, the sliding motion occurs in the same direction as the angular movement.

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Convex Surface Sliding

In convex surfaces, the sliding motion occurs in the opposite direction to the angular movement.

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Concave-Convex Law

Most joints involve concave and convex surfaces that need coordinated roll and glide movements for proper function.

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Study Notes

Osteokinematics

  • Refers to physiological movements of joints that can be performed voluntarily.
  • Includes flexion, extension, adduction, abduction, and rotation.
  • Involves gross movements of bones at joints primarily related to angular rotation.

Arthrokinematic Motions

  • Comprises roll, glide (slide), and spin; most joint movements combine all three.
  • Roll: rotary movement where one bone rolls on another, allowing new contact points.
  • Slide: translatory movement, with one joint surface sliding over another; direction depends on the shape of surfaces.
  • Spin: rotary movement where one body spins on another, maintaining contact at the same point.

Movement Dynamics

  • Rolling always follows the direction of the moving bone, irrespective of bone shape (convex or concave).
  • Convex on concave surface dynamics show opposite movements: the roll and glide take opposite directions.
  • Concave on convex results in the same direction for both roll and glide.
  • Points of contact differ across movements: rolls involve multiple points, slides involve a single point with multiple movement paths, and spins maintain contact at one point.

Kinematic Chains

  • Open kinematic chain: distal segment is free, not fixed to an immovable surface.
  • Closed kinematic chain: distal segment is fixed, allowing proximal segment freedom to move.

Arthrokinematics

  • Essential for full osteokinematic motion: all three arthrokinematic motions (roll, glide, spin) must occur.
  • The relationship between angular movement and sliding direction differs based on surface shapes:
    • Concave surfaces move in the same direction as the angular movement.
    • Convex surfaces slide in the opposite direction to the angular movement.

Concave-Convex Law

  • Most diarthrodial joints consist of concave and convex surfaces, requiring coordinated roll and glide movements for function.

Angular Movement

  • Defined as the increase or decrease in angles between two bones, including flexion, extension, abduction, adduction, and circumduction.
  • Angular movements result from the interplay of rolls, spins, and slides.

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Description

Explore the concepts of osteokinematics and arthrokinematic motions in this quiz. Test your understanding of joint movements, including flexion, extension, rolling, sliding, and spinning. Ideal for students of kinesiology and related health sciences.

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