Joints
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Exam #1: Thursday April 12 th 1:30-2:50 in Hogness Auditorium bring scantron PowerPoint PPT Presentation


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Joints. Exam #1: Thursday April 12 th 1:30-2:50 in Hogness Auditorium bring scantron review session Monday at 5:30 in T-435 HSB 1 handout for today. Name this cell. List one of it’s functions. Name this space. What is in this space?. John broke his ulna, does he need crutches?

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Exam #1: Thursday April 12 th 1:30-2:50 in Hogness Auditorium bring scantron

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Joints

  • Exam #1: Thursday April 12th

  • 1:30-2:50 in Hogness Auditorium

  • bring scantron

  • review session Monday at 5:30 in

  • T-435 HSB

  • 1 handout for today


Name this cell.

List one of it’s functions.

Name this space.

What is in this space?

John broke his ulna, does he

need crutches?

The mandible articulates with the

___________ bone.


Joints

  • Different type of joints

    • fibrous

    • cartilaginous

  • synovial

    • anatomy

    • stabilizers

  • temporomandibular joint

    • anatomy

    • TMJ syndrome

  • shoulder joint

    • anatomy

    • common injuries

  • knee joint

    • anatomy

    • common injuries


  • Joint classification

  • manner or type of material by which bones articulate

  • relates to movement

Fibrous or cartilaginous

synovial


  • Fibrous

  • bound by collagen

  • fibers

  • little or no movement

  • Cartilaginous

  • linked by cartilage

  • some movement


Examples of fibrous joints in the skull


  • Cartilaginous Joints

  • linked by cartilage

  • hyaline or fibrocartilage

Rib 1 vs 2-12


Synovial joints

  • freely moveable

  • articulating bones covered with

  • hyaline cartilage

  • bones separated by joint cavity

  • joint cavity contains synovial fluid

  • joint is enclosed by joint capsule


Parts of a synovial joint

Ligaments

Articular (hyaline) cartilage

Joint (articular) capsule

(Synovial membrane + fibrous capsule)

Joint cavity

(contains synovial fluid)

Synovial fluid and warming up


  • Bursa

  • sac filled with synovial fluid

  • between muscles or tendons

  • and bones

  • for protection and sliding

  • bursitis - inflammation

  • Tendon Sheaths

  • elongated bursae

  • wrap around a tendon

  • for protection and sliding

  • tenosynovitis

  • tendonitis


How do you stabilize a synovial joint?

Name & how (4 ways)


Fig. 9.6(TE Art)

Ball-and-socket joint

(humeroscapular)

Pivot joint

(radioulnar)

Hinge joint

(humeroulnar)

Gliding joint

(intercarpal)

Saddle joint

(trapeziometacarpal)

Condyloid joint

(metacarpophalangeal)


Temporomandibular joint (TMJ)

Mandibular

fossa

  • Depress & elevate

  • Medial & lateral excursion

  • Protraction & retraction


TMJ dislocation


Masseter

Temporomandibular ligament

Temporalis

TMJ syndrome


Ball and Socket joints

Coxal joint

Humeroscapular joint


Humeroscapular joint

(Glenohumeral)

  • articulating bones?

  • flex & extend

  • hyperextend

  • abduct & adduct

  • medial & lateral rotation

  • circumduction

What about protraction &

retraction of the scapula?


Sternoclavicular joint

  • Scapular anatomy

    • acromion

    • spine

    • coracoid process

    • glenoid cavity

    • AC joint


Acromioclavicular (AC) joint

Acromion

Supraspinatus

Subdeltoid

bursa

deltoid

Glenoid

cavity

Glenoid

labrum


Subacromial bursa

Coracohumeral

Glenohumeral

ligaments

Transverse humeral

Biceps tendon


Posterior view

Anterior view

supraspinatus

infraspinatus

Teres minor

subscapularis

Rotator cuff muscles


Supraspinatus tendon

Infraspinatus

tendon

Glenohumeral

ligament

glenoid

labrum

Subscapularis

tendon

Teres minor

tendon

Glenohumeral ligaments

Lateral view of glenoid fossa


Shoulder separation – Acromioclavicular joint


1. What is this? Function?

2. What is this? Function?

3. What is this? Function?

4. When the head of the humerus

comes out of the glenoid fossa,

what is that injury called?


Tibiofemoral joint (knee)

  • articulating bones

    • tibia – femur

    • (patellofemoral joint)

  • movements- modified hinge

    • flex

    • extend

    • rotation when flexed

    • “locking” when fully

    • extended


Medial meniscus

Lateral meniscus

Knee flexed

Menisci = Fibrocartilage pads


Quadriceps tendon

Prepatellar bursa

Joint capsule

Synovial membrane

Meniscus

Patellar ligament


quads

quads

patella

Prepatellar bursa

patella

?

Synovial Capsule


Housemaid’s knee

(from a wrestling website….)

aka prepatellar bursitis


Intracapsular & extracapsular ligaments of knee

Lateral (fibular)

collateral lig.

Ant. Cruciate lig.

Post. Cruciate lig.

meniscus

Medial (tibial)

collateral ligament

Posterior

Anterior


hyperflexion

hyperextension


  • Deviations of the tibia from the midline

  • unequal weight distribution

  • unequal wear & tear

  • abnormal patella tracking = chondromalacia


before

after


Osteoarthritis (OA)

Rheumatoid arthritis (RA)


Exam #1 this Thursday here in Hogness

Bring a scantron

Be on time!

Muscle tissue will NOT be on exam #1


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