wrist & hand pta 106 unit 3 presentation by: lisa, bobbi, deanna, chris
TRANSCRIPT
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WRIST & HANDWRIST & HANDPTA 106
Unit 3 presentation by:Lisa, Bobbi, Deanna, Chris
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Surface AnatomySurface Anatomy
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Surface Anatomy Surface Anatomy
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Anatomical Snuff BoxAnatomical Snuff Box
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Compartments & SpacesCompartments & Spaces
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Wrist BonesWrist Bones
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Wrist BonesWrist BonesSomeLoversTryPositionsThatTheyCan’tHandle
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Hand BonesHand Bones
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CartilageCartilageArticular Cartilage
Is smooth shiny material that covers the bones of the hand and wrist. It absorbs forces of impact and provides for low friction motion.
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Articular CapsuleArticular CapsuleSynovial Membrane • Is the inner membrane of a
joint made up of loose connective tissue.
• Secretes synovial fluid which services to lubricate the joint and reduce the friction between bones in joints.
• Supplies nutrients to the joint
Fibrous Layer• Formed by dense irregular
connective tissue attached to the periosteum surface of joints.
• Allows for movement.• Provides stability
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JointsJoints• Metacarpo-phalangeal Joint
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JointsJointsProximal Interphalangeal Joint Distal Interphalangeal Joint
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Types of JointsTypes of JointsHinge Joints- Convex surface of one bone fits into the concave surface of the adjoining boneExample: interphalangeal joints
Condyloid Joints- Convex oval-shape projection of one bone fits into the oval-shaped depression of another boneExample: MCPJ and radio-scapho-lunate joint
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Types of JointsTypes of JointsSaddle Joints- articular surface of one bone is the saddle-shaped, and the articular surface of the other bone fits into the “saddle” as a sitting rider would sit.Example: CMCJ between the trapezium and the thumb
Planar Joints- Flat or slightly curved bones joined together that allow back and forth and side to side movements.Example: Intercarpal joints
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LigamentsLigamentsPalmar AponeurosisIt gives firm attachment to the skin of the palm to improve the grip, and it protects the underlying tendons
Flexor RetinaculumIs a strong band that is attached on the radial side to the tubercle of the scaphoid ridge of the trapezium and on the ulnar side to the pisiform and hook of the hamate. Serves as the top sheath of the carpal tunnel for which the flexor tendons and median nerve pass through.
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LigamentsLigamentsCommon Flexor SheathSurrounds the eight tendons of the superficial and deep flexors of the digits of the hand as they pass through the carpal canal.
Extensor RetinaculumConsists of a group of heavy connective fibers in the tissues of the wrist. It connects the lateral margin of the radius with the inside border of the ulna.
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Motions of the WristMotions of the Wrist Flexion: 80-90 degrees
Extension: 75-85 degrees Radial deviation: 20 degrees Ulnar deviation: 35 degrees
Supination: 90 degrees Pronation: 90 degrees
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Motions of the FingersMotions of the FingersAbduction: 20-25 degrees
MCPJ flexion: 85-105 degrees
MCPJ extension: 20-30 degrees
PIPJ flexion: 110-120 degrees, 0 degrees extension
DIPJ flexion: 80-90 degrees, 0 degrees extension
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Range of Motion of the ThumbRange of Motion of the Thumb
Thumb: CMCJ flexion: 60-70 degreesFlexion at MCPJ: 85-105 degreesAbduction: 70-80 degreesOpposition- combined motion of abduction, flexion, and rotation of the thumb.
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Posterior Muscles of Wrist and HandPosterior Muscles of Wrist and Hand
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Anterior Muscles of Wrist and HandAnterior Muscles of Wrist and Hand
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Nerve, Artery/ Veins of the Nerve, Artery/ Veins of the Hand and Wrist Debrief:Hand and Wrist Debrief:
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The Sinistra The Sinistra Nervous FamilyNervous Family
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Central Nervous SystemAka “The
Boss”
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The “Under Boss”The “Under Boss”
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Capo # 1Capo # 1• The median nerve:- Is responsible for the innervations of the following
soldiers.- 1. Flexor carpi radialis- 2 .Flexor digitorum superficialis- 3. Flexor digitorum profundus- 4. Flexor pollicis longus- 5. Palmaris longus- Gives humans the ability to oppose the thumb joint
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Capo # 2Capo # 2
- Is responsible for the innervations of the following soldiers.-1. Flexor carpi radialis-2. Flexor digitorum profundus
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Capo # 3Capo # 3• The Radial Nerve:- Is responsible for the
innervations of the following muscles
- 1. Extensor carpi radialis longus
- 2. Extensor carpi radialis brevis- 3. extensor digitorum- 4. extensor carpi ulnaris- 5. Abductor pollicis longus- 6. Extensor digiti minimi- 7. extensor pollicis brevis- 8. Extensor pollicis longus
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Other known associates
Dorsal cutaneous branch Vaga and Palmer cutaneous branch
Winfield
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Median Associate #1Median Associate #1• - The Palmer
cutaneous branch: • - splits off the median
nerve before crease of the wrist
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Ulnar Associate #1Ulnar Associate #1
• The dorsal cutaneous branch:• Known for famous debilitating
wrist lock
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There Will Be BloodThere Will Be Blood
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• Arteries:• 1. Deep palmar arch• 2. Superficial palmar arch• 3. Common palmar digital arteries
The Five BurrowsThe Five Burrows
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• The Radial artery supplies blood to:- 1. Flexor carpi radialis- 2. Extensor carpi radialis longus- 3. Extensor carpi radialis brevis - 4. Flexor pollicis longus The Ulnar artery supplies blood to:- 1. Flexor carpi radialis- 2. Flexor carpi ulnaris- 3. Extensor carpi ulnaris- 4. Flexor digitorum superficialis- 5. Flexor digitorum profundus- 6. Palmaris longus
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Reccurent Interosseous ArteryReccurent Interosseous Artery
• -supplies:• -Extensor digitorum• -Extensor digiti minimi
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Posterior Interosseous ArteryPosterior Interosseous Artery
• -supplies:• - Abductor pollicis longus• -Extensor pollicis brevis• -Extensor pollicis longus
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Waste ManagementWaste Management
- 1. Cephalic vein- 2. Basillic vein- 3. Superficial dorsal
venous arch (network)- 4. Deep dorsal venous
arch (network)
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Clinical Concerns Clinical Concerns Carpal tunnel Ganglion cyst
- The transverse carpal ligament in the wrist puts pressure on the medial
nerve- - possible cause: overuse, hormonal
-http://www.youtube.com/watch?v=SGyKQchSEJ4
- Is a fluid filled cyst that develops out of a joint.
- - possible cause: joint trauma-http://www.youtube.com/watch?v=mJ6oj3lkqm8
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De Quervain’s TenosynovitisDe Quervain’s Tenosynovitis
• -irritation of the sheath around the tendon• - affects the tendons on the thumb side of the wrist• - possibly caused by repetitive actions, over use • - http://www.youtube.com/watch?v=q87zSRYHa1o
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Spoiler AlertSpoiler Alert