Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «J»:
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Johnson-Stevens syndrome
Johnson-Stevens syndrome: See: Stevens-Johnson syndrome. ...
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Joint
Joint: A joint is the area where two bones are
attached for the purpose of motion of body parts. A joint is usually
formed of fibrous connective tissue and cartilage. An articulation or
an arthrosis is the same as a joint.
Joints are grouped according to their motion: a ball and socket
joint; a ...
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Joint aspiration
Joint aspiration: A procedure whereby a sterile needle and syringe are used to drain joint fluid from the joint. This is usually done as an office procedure or at the bedside in the hospital. The procedure is also known medically as arthrocentesis.
For an arthrocentesis, the skin over the joint is ...
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Joint hypermobility syndrome
Joint hypermobility syndrome: A common benign childhood
condition involving hypermobile joints (that can move beyond the normal range of motion). Symptoms include pains in knees, fingers, hips, and elbows. The affected joints may sprain or dislocate. Scoliosis (curvature of the spine) is more freque...
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Joint, AC
Joint, AC: The AC (acromioclavicular) joint is located between the acromion (a projection of the scapula that forms the point of the shoulder) and the clavicle (the collar bone). This is a gliding type of joint.
The ligaments that serve to support and strengthen this joint are called the capsular; s...
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Joint, acetabular
Joint, acetabular: The hip joint by another
name.
The acetabulum is the cup-shaped socket of the hip joint. It is a key
feature of the pelvic anatomy. The head (upper end) of the
femur (the thighbone) fits right into the acetabulum, articulates
with it, and thereby forms a ball-and-socket join...
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Joint, acromioclavicular
Joint, acromioclavicular: The acromioclavicular (AC) joint is located between the acromion (a projection of the scapula that forms the point of the shoulder) and the clavicle (the collar bone). This is a gliding type of joint.
The ligaments that serve to support and strengthen this joint are called ...
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Joint, ankle
Joint, ankle: The ankle joint
is complex. It is made up of two joints: the true ankle joint and the subtalar joint:
The true ankle joint is composed of 3 bones: the tibia which forms the
medial (inside) portion of the ankle; the fibula which forms
the lateral (outside) portion of the ankle;...
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Joint, atlas and axis
Joint, atlas and axis: The joint between the atlas and axis bones. The atlas is the first cervical (neck) vertebra which is just under the head; it is named for Atlas, the Greek god who supported the world on his shoulders. The axis is the second cervical vertebra; it has what is called the odontoid...
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Joint, atloaxoid
Joint, atlas and axis: The joint between the atlas and axis bones. The atlas is the first cervical (neck) vertebra which is just under the head; it is named for Atlas, the Greek god who supported the world on his shoulders. The axis is the second cervical vertebra; it has what is called the odontoid...
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Joint, ball-and-socket
Joint, ball-and-socket: A ball-and-socket joint is one in which the round end of a bone fits into the cavity of another bone. The hip joint is a ball-and-socket joint....
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Joint, calcaneocuboid
Calcaneocuboid joint: The calcaneocuboid joint is located in the foot between the calcaneus bone (the heel bone) and the cuboid bone (a bone shaped like a cube just in front of the calcaneus).
The calcaneocuboid joint is a gliding type of joint.
The ligaments that serve to support and strengthen thi...
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Joint, elbow
Joint, elbow: Three long bones meet in the middle portion of the arm at the elbow joint. The bone of the upper arm (humerus) meets both the ulna (the inner bone of the forearm) and radius (the outer bone of the forearm) to form a hinge joint. And the radius and ulna also meet one another in the elbo...
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Joint, knee
Joint, knee: The knee joint has three parts. The
thigh bone (the femur) meets the large shin bone (the tibia) to form
the main knee joint. This joint has an inner (medial) and an outer
(lateral) compartment. The kneecap (the patella) joins the femur to
form a third joint, called the patellofemor...
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Joint, patellofemoral
Joint, patellofemoral: One of the knee joints. The knee has three parts. The thigh bone (femur) meets the large shin bone (tibia) forming the main knee joint. This joint has an inner (medial) and an outer (lateral) compartment. The kneecap (patella) and the femur form a third joint, called the patel...
