The document discusses different types of joints in the body, including synovial joints, cartilaginous joints, fibrous joints, and their specific examples and characteristics. It covers topics like the structure and function of joints, types of movements allowed by different joints, and clinical examples of joint disorders. Key points mentioned are the different structural and functional classifications of joints, examples of specific joints like the hip, shoulder, and intervertebral joints, and how joints allow movement through leverage of muscles and bones.
classification of joints. example of different types of joints. different types of joints on the basis of axis of movements. clinical aspects of joints. different between arthritis.
classification of joints. example of different types of joints. different types of joints on the basis of axis of movements. clinical aspects of joints. different between arthritis.
Arthrology (General Lectures) Study of Joints
(Human anatomy)
by DR RAI M. AMMAR
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Classification and Applied Aspects of JointsMathew Joseph
ย
The structural classification divides joints into fibrous, cartilaginous, and synovial joints depending on the material composing the joint and the presence or absence of a cavity in the joint. The functional classification divides joints into three categories: synarthroses, amphiarthroses, and diarthroses
Arthrology (General Lectures) Study of Joints
(Human anatomy)
by DR RAI M. AMMAR
www.facebook.com/drraiammar
www.twitter.com/drraiammar
www.instagram.com/drraiammar
www.linkedin.com/in/drraiammar
www.themedicall.com/blog/auther/drraiammar/
For Any Book or Notes Visit Our Website:
www.allmedicaldata.wordpress.com
www.drraiammar.blogspot.com
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Classification and Applied Aspects of JointsMathew Joseph
ย
The structural classification divides joints into fibrous, cartilaginous, and synovial joints depending on the material composing the joint and the presence or absence of a cavity in the joint. The functional classification divides joints into three categories: synarthroses, amphiarthroses, and diarthroses
A joint is an articulation between two bones in the body and are broadly classified by the tissue which connects the bones. The three main types of joints are: synovial, cartilaginous and fibrous.
Joints, function and types of joints.pptx10khan113ii
ย
Joints, or articulations, are the structures where two or more bones meet, allowing for movement and providing mechanical support. They are essential for a wide range of motions and functions in the human body. Here's a detailed description of joints:
### Types of Joints Based on Structure:
1. **Fibrous Joints**:
- **Description**: Connected by dense connective tissue rich in collagen.
- **Movement**: Generally immovable (synarthrotic).
- **Examples**: Sutures in the skull, syndesmoses between long bones like the tibia and fibula.
2. **Cartilaginous Joints**:
- **Description**: Bones connected entirely by cartilage (either hyaline or fibrocartilage).
- **Movement**: Allow limited movement (amphiarthrotic).
- **Examples**: Intervertebral discs, pubic symphysis.
3. **Synovial Joints**:
- **Description**: Characterized by a fluid-filled synovial cavity that separates the articulating bones.
- **Movement**: Freely movable (diarthrotic), with various degrees and types of movement depending on the specific joint type.
- **Examples and Subtypes**:
- **Hinge Joints**: Permit flexion and extension (e.g., elbow, knee).
- **Ball-and-Socket Joints**: Allow rotational movement and a wide range of motion (e.g., shoulder, hip).
- **Pivot Joints**: Enable rotational movement around a single axis (e.g., atlantoaxial joint in the neck).
- **Gliding Joints**: Allow sliding or gliding movements (e.g., intercarpal joints in the wrist).
- **Saddle Joints**: Permit movement along two planes (e.g., thumb joint).
- **Condyloid Joints**: Allow movement but no rotation (e.g., wrist joint between the radius and carpal bones).
### Types of Joints Based on Function:
1. **Synarthroses**:
- **Description**: Immovable joints providing strong, stable connections.
- **Examples**: Skull sutures.
2. **Amphiarthroses**:
- **Description**: Slightly movable joints.
- **Examples**: Intervertebral discs, pubic symphysis.
3. **Diarthroses**:
- **Description**: Freely movable joints, synonymous with synovial joints.
- **Examples**: Most limb joints like the knee, hip, shoulder.
### Joint Anatomy:
- **Cartilage**: Covers the ends of bones, providing a smooth surface for movement and cushioning.
- **Synovial Membrane**: Lines the joint capsule and secretes synovial fluid for lubrication.
- **Ligaments**: Strong bands of connective tissue that connect bones and stabilize the joint.
- **Tendons**: Connect muscle to bone, aiding in joint movement.
- **Bursae**: Fluid-filled sacs that reduce friction between moving structures within the joint.
### Functions of Joints:
- **Movement**: Facilitate a range of bodily movements, from gross motor functions like walking and lifting to fine motor skills like writing and typing.
- **Support**: Maintain the body's structure and posture.
- **Protection**: Protect internal structures by providing cushioning and absorbing impact.
JOINTS CLASSIFICATION AND DISORDERS.pptxMsSapnaSapna
ย
A joint is the part of the body where two or more bones meet to allow movement. Generally speaking, the greater the range of movement, the higher the risk of injury because the strength of the joint is reduced. The six types of freely movable joint include ball and socket, saddle, hinge, condyloid, pivot and gliding.
All human joints including axial and appendicular skeleton will clear all the concepts and doubts of learner related to joints and different classification of joints with detail. Also, help student, learner, reader to communicate.
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8. There are 3 types of structural joints and there are 3 types of functional articulations . You must know the terms for all of them!
9. Shown is the fractured humerus of a Native American that was not immobilized to allow healing and fusion. It eventually progressed to form a false joint ( pseudoarthrosis ) in the brachium.
15. Sutures are initially fibrous synarthrotic joints that are only found in the skull. They replace the membranous fontanels at about 18 months of age. In early adulthood the fibrous connective tissue is replaced by bone so the skull bones are bone fused to bone (a synostosis ).
16. A syndesmosis also exists between the distal ends of the radius and ulna. It also allows slight movement ( amphiarthrotic ).
17. A syndesmosis exists between the distal ends of the tibia and fibula and is permits slight movement ( amphiarthrotic )
18. Syndesmoses are possible because of the interosseous membrane that holds the bones together, while still allowing slight movement.
19. WHICH OF THE FOLLOWING IS CORRECT ABOUT ORTHODONTIC BRACES? A APPLIED IN THE BUCCAL CAVITY B CAUSE TENSION ON PERIODONTAL LIGAMENTS C ALTER FIBROUS JOINTS D AFFECT SYNARTHROSES E ALL OF THE ABOVE
20. Synchondroses are joined together by hyaline cartilage and, since they are immovable, they are also synarthroses.
21. Synchondroses have hyaline cartilage between the articulating bone segments. One example is epiphyseal growth plates . These growth plates eventually become synostoses.
22. Costal cartilage persists into adulthood and forms sychondroses . In old age these cartilages do occasionally ossify and form synostoses.
23. Symphyses are joined together by fibrocartilage and, since they are slightly moveable, they are also amphiarthroses .
24. The pubic symphysis is an amphiarthrotic cartilaginous joint that can be loosened by hormones produced in pregnancy.
25. Recall that the hormone relaxin loosens the symphysis pubis and the sacroiliac joint during pregnancy to increase the diameter of the true pelvis and the pelvic outlet to facilitate parturition.
26. symphysis Intervertebral joints between the bodies of the vertebrae and their separating intervertebral discs form amphiarthrotic symphyses
30. A synovial jointโs range of motion is limited by the shape of the articulating bones, ligaments, tendons, the joint capsule, and by muscles that span the joint.
31. There is tremendous individual variability in joint motility, most of which is related to body conditioning.
32. Hypermobility of a single joint (โdouble-jointedโ) makes an individual more prone to joint dislocation and damage to the joint and joint capsule.
35. โ Ruby Ringโ born SLC, UT 1921-2002 8 th of 9 children Left home at 14 yrs old to be a contortionist
36. Read the clinical view in the text about Marfan Syndrome
37. Synovial joints are enclosed by a fibroelastic joint capsule, which has an outer layer called the fibrous capsule and in inner layer called the synovial membrane..
38. The synovial membrane secretes a viscous oily synovial fluid which lubricates the articular cartilage and which brings nutrients and removes wastes from the chondrocytes
39. The popping sound that occurs when a joint is pulled or stretched is typically caused by gas bubbles that form in the synovial fluid and burst (causing the popping sound) when the pressure in the synovial fluid is decreased.
40. Popping sounds of the back when stretched or pressed can also be caused by rupturing gas bubbles in the synovial fluid or by sudden repositioning of articular surfaces
41. Since articular cartilage is avascular, it heals poorly. In this endoscopic view of the knee, the doctor is drilling holes through the damaged articular cartilage into the bony epiphysis so blood can reach the cartilage to affect repair.
42. Articular cartilage of the knee after holes are drilled into the bony epiphysis so blood can reach the cartilage to promote healing.
43. The repititious compression/relaxation that occurs during exercise is vital to the articular cartilageโs well-being because the accompanying pumping action enhances its nutrition and waste removal from the surrounding synovial fluid.
44. Ligaments , which connect bones to bones across a joint, are composed of dense fibrous connective tissue. The elbow is shown.
46. WHICH OF THE FOLLOWING IS A CORRECT STATEMENT? A A SYMPHYSIS IS FOUND BETWEEN T 12 AND L 1 B MARFAN SYNDROME IS CAUSED BY DEFECTIVE FIBRILLIN C ARTICULAR CARTILAGE IS AVASCULAR D SYNCHONDROSES MAY BECOME SYNOSTOSES E ALL OF THE ABOVE
47. Bursae are fibrous saclike structures that contain synovial fluid and are lined with synovial membrane
49. Numerous tendon sheaths are found spanning the wrist and ankle joints
50. Tendons , which are not part of the joint itself, are composed of dense fibrous connective tissue. Tendons connect muscles to bones and help stabilize joints. They sometimes limit the range of motion of the joint.
51. Planar (gliding) joints are uniaxial. Examples are intercarpal joints and intertarsal joints
52. The articulating processes (superior articular processes of one vertebrae articulate with inferior articular processes of another vertebrae) of adjacent vertebrae are diarthrotic synovial gliding (planar) joints .
53. Note that that the spine is a synovial gliding (planar) joint between the vertebral articular processes and an amphiarthrotic symphysis between the vertebral bodies.
69. IN THE ARTICLE โCAN HIS HIP BE SAVED?โ, THE DOCTOR WAS VERY FEARFUL WHILE TREATING A 25-YEAR-OLD MALEโS HIP DISLOCATION. WHY? A HYPOVOLEMIC SHOCK B DEATH OF OSTEOCYTES C INABILITY TO REMOVE ISINGLASS WITH BULLDOG ARTERY FORCEPS D SYNOVIAL FLUID CAVITATION E ALL OF THE ABOVE
70. Bones act as levers to help move the resistance (R), the muscles provide the force or effort (E), and the joints act as pivots or fulcra (F).
71. Ankle Gliding motion is a simple movement in which two opposing surfaces slide slightly back-and-forth or side-to-side to one another. The angle between the bones does not change.
74. Adducted arm and adducted fingers Abducted arm and adducted fingers Abducted arm and abducted fingers
75. Despite what is shown in this picture, flexion and extension occur in an anterior-posterior plane!
76. Flexion and of the knee and hip followed by extension of both Flexion Extension
77. Flexion of the vertebral column by contraction of the rectus abdominus muscles.
78. Lateral flexion decreases a joint angle in a coronal plane. This type of movement occurs primarily between the vertebrae in the cervical and lumbar regions of the vertebral column.
79. Despite what is shown in this picture, flexion and extension occur in an anterior-posterior plane!
80. In the anatomical position all of the joints are fully extended (at a 180 degrees, except for the ankle joint which is at 90 degrees.
90. The rotation shown is possible because of the diarthrotic synovial pivot joint between the head of the radius and the radial notch on the nearby ulna
94. THE CALF MUSCLES UTILIZE THE ACHILLES TENDON TO INSERT ONTO THE CALCANEUS. WHEN THESE MUSCLES CONTRACT, WHAT WILL OCCUR ? A PLANTARFLEXION B CIRCUMDUCTION C ABDUCTION D DORSIFLEXION E MOVEMENT OF A CONDYLOID JOINT