Cartilaginous Joint (Amphiarthrosis) is a type of joint where two bones are
connected by cartilage, allowing limited or no movement. These
joints provide stability and slight flexibility in areas where strength
is needed along with some mobility present in some type’s.
Unique feature of Cartilaginous Joints
Two bones are joined by cartilage
(hyaline or fibrocartilage). It don’t have a joint cavity
(unlike synovial joints). It allow little to no movement (either
synarthrosis or amphiarthrosis). It is located areas of body where need more support
and slight mobility (e.g., spine, pelvis).
Primary Cartilaginous Joints
(Synchondrosis)
✅ Structure: two bones are joined
by hyaline cartilage. It is usually temporary joint (ossify with
age, except a few) because the cartilage between two bones became converted into
bone and so there is no sign of joint
✅ Movement: No or very little
movement (synarthrosis).
✅ Examples:
- Epiphyseal
plate (Growth plate) – between the diaphysis and
epiphysis of long bones (temporary).
- First
costochondral joint – between the first rib and
sternum (permanent).
- Spheno-occipital
synchondrosis – in the base of the skull.
Secondary Cartilaginous Joints
(Symphysis)
✅ Structure: joint forming bones
are joined by fibrocartilage with a thin layer of hyaline cartilage at
the bone ends. The cartilage of joint is never converted into bone so the joint
is permanent joints.
✅ Movement: Slightly movable
(amphiarthrosis) – allows limited movement.
✅ Examples:
- Intervertebral
discs – between vertebral bodies.
- Pubic
symphysis – between the pubic bones.
- Manubriosternal
joint – between the manubrium and the body of the sternum.
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Primary cartilaginous joint
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Secondary cartilaginous joint
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It is also known as Synchondroses
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it is also known as symphysis
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Only hyaline cartilage
forming the joint
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Thin plates of hyaline cartilage
separated by fibro-cartilage forming the joint
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It is a temporary joint
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It is a permanent joint
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Hyaline cartilage is converted
into bone
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Cartilages are not converted into
bone
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No definite location
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Usually located at median plane
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It allows no movement
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It allows little movement
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Exmple: costochondral joint
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example : menubriosternal joint
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