Chp. 9 Joints Flashcards
Arthrology
study of joints
Kinesiology
study of motion of human body
Orthopaedics
branch of surgery concerned with disorders of spine, joints, and repair of deformities or injuries
Articulation = _____
joints
Functions of Joints
- hold bone together
- hold bone to cartilage
- hold bone to tooth
- allow rigid skeleton degree of flexibility for body movement
Joints are classified by _____ and _____
structure, function
Structure: ____, _____, _____, _____
fibrous
cartilaginous
bony
synovial
functional classification of joints are classified based on __________ at joint
amount of movement
3 functional classifications of joints?
- synarthrosis
- amphiarthrosis
- diarthrosis
Synarthrosis
immovable, very strong
Amphiarthrosis
slightly movable, still strong
Diarthrosis
freely movable, very flexible
4 types of Synarthroses (no movement)
- suture
- gomphosis
- synchondrosis
- synostosis
Suture: ____
Gomphosis: ____
Synchondrosis: _____
Synostosis: _____
fibrous
fibrous
cartilaginous
bony
2 types of Amphiarthrosis (little movement)
syndesmoses
symphysis
type of Diarthrosis (free movement)
all synovial joints
3 components of synovial joints?
- articular cartilage
- joint capsule
- synovial fluid
synovial joints contain _____
synovial fluid
Synovial Fluid has consistency of _______ and contains ______
egg yolk, proteoglycans
5 accessory structures of synovial joints?
- cartilage/fat pads
- menisci
- ligaments
- tendons
- bursae
5 accessory structures of complex synovial joints?
- bursa
- fat pad
- meniscus
- extra capsular ligament
- intracapsular ligament
Articular Cartilage:
cover articulating surfaces, separated by synovial fluid
Meniscus:
fibrocartilage pad between opposing bones
Fat Pads:
adipose tissue covered by synovial membrane, protect articular cartilages
Ligaments:
Support and strengthen joint
Sprain:
ligament with torn collagen fibers
Tendons:
attach to muscles around joint, may limit range motion provide mechanical support
Bursae:
small pockets synovial fluid, cushion areas where tendons or ligaments rub against other tissues
what are synovial joints categorized by? (2 things)
- amount movement allowed
2. shape of articulating surfaces
6 types of Synovial Joints?
- Plane/Gliding
- Hinge
- Condylar/Ellipsoidal
- Saddle
- Pivot
- Ball and Socket
Plane/Gliding:
eg:
- surface flat or slightly curved
- inter carpal and inter tarsal joints
Hinge:
eg:
- rounded process of one bone fits into concave surface of another bone
- elbow, knee
Condylar/Ellipsoidal:
eg:
- oval condyle fits into oval depression
- wrist
Saddle:
eg:
- surfaces are saddle shaped
- thumb, metacarpal
Pivot:
eg:
rounded surface of one bone joints shallow depression or foramen in another bone
-atlas and axis
Ball and Socket:
eg:
- ball shaped head fits into deep depression
- shoulder and hip
Arthroscopy:
visual examination of interior of joint with an arthroscope
Arthroplasty:
joint replacement surgery
Arthroscopic Surgery:
eg. knee arthroscopy
Anterior Cruciate Ligament Surgery
ACL
Sprain:
forcible twisting of joint that stretches or tears its ligaments, doesn’t dislocate bones
Strain:
stretched or partially torn muscle
Dislocation:
displacement of bone from joint with resulting tearing of ligaments, tendons and articular capsules
Subluxation:
incomplete dislocation
Rheumatoid Arthritis:
autoimmune disorder in which immune system attacks cartilage and synovial membranes
Osteoarthritis:
_____ cartilage degenerates and new bone is deposited on exposed ends of bones forming ____
- degenerative joint disease which joint cartilage gradually lost
- articular, spurs
Gout:
____ accumulate in soft tissues such as ___, ____, and ____
can be _____ dependent
excessive build up of uric acid in blood
salt, kidneys, cartilage, joints
temperature
Bursitis:
patellar bursitis = “______”
- inflammation of bursa
- patellar bursitis
Bunion:
type of bursitis and ossification on toe
Adhesions:
fibrous bands between bone surface
Spurs:
excess bone tissue along joint edges