What does the patella articulate with?
1 Anatomy. The patella, the largest sesamoid bone in the body, articulates only with the patellar surface of the distal femur (patellar notch). The patella rides in the tendon of the quadriceps femoris—the largest muscle of the thigh and the primary extensor of the knee.
What is the patellar surface of femur?
The front part of the lower end of femur is named the patellar surface and articulates with the patella; it presents a median groove which extends downward to the intercondyloid fossa and two convexities, the lateral of which is broader, more prominent, and extends farther upward than the medial.
What is the role of patella?
The patella plays the following role at the knee joint: Functions primarily as an anatomic pulley for the quadriceps muscle.It increases the lever arm of the extensor mechanism allowing for more effective knee flexion and thus increase quadriceps strength by 33–50%.
What’s the back of your knee called?
The shallow depression formed at the back of the knee is called the popliteal fossa; it is formed at the junction of the femur and tibia. There is a muscle here on the floor of the popliteal fossa which is the deepest muscle of the knee joint.
What are the 4 bones that make up the knee joint?
The knee is made up of four bones. The femur or thighbone is the bone connecting the hip to the knee. The tibia or shinbone connects the knee to the ankle. The patella (kneecap) is the small bone in front of the knee and rides on the knee joint as the knee bends.
What is another name for patella?
kneecap
patella Definitions and Synonyms The usual word for this is kneecap.
What does it mean when the back of your leg hurts behind the knee and calf?
Deep vein thrombosis, tendonitis, muscle spasm, and a Baker’s cyst are some of the reasons of discomfort below or behind the knee and calf. Although these are frequent illnesses that might cause discomfort, other medical disorders can also cause discomfort in certain areas of the legs.
Why is my knee pit itchy?
Atopic dermatitis behind the knees Atopic dermatitis can cause small, red bumps, which can be very itchy. Atopic dermatitis most often occurs where your skin flexes — inside the elbows, behind the knees and in front of the neck. Atopic dermatitis (eczema) is a condition that makes your skin red and itchy.
What is back of knee called?
The Popliteal Fossa is a diamond-shaped space behind the knee joint. It is formed between the muscles in the posterior compartments of the thigh and leg. This anatomical landmark is the major route by which structures pass between the thigh and leg.
Do monkeys have kneecaps?
Fabellae are sesamoid bones, which means they grow in the tendon of a muscle – the knee cap being the largest example in the human body. In monkeys the fabellae can act as a secondary knee cap, increasing the potential leverage and mechanical force, but it began to disappear in apes and early humans.
What is osteochondrodysplasia?
From Wikipedia, the free encyclopedia Osteochondrodysplasia is a general term for a disorder of the development (dysplasia) of bone (“osteo”) and cartilage (“chondro”). Osteochondrodysplasias are rare diseases. About 1 in 5,000 babies are born with some type of skeletal dysplasia.
How is the word irony used?
Here are the facts about how the word irony is used. Irony has two formal uses that are not as common in general prose as its more casual uses. One refers to Socratic irony—a method of revealing an opponent’s ignorance by pretending to be ignorant yourself and asking probing questions.
What is the difference between tragic irony and dramatic irony?
One refers to Socratic irony—a method of revealing an opponent’s ignorance by pretending to be ignorant yourself and asking probing questions. The other refers to dramatic irony or tragic irony—an incongruity between the situation in a drama and the words used by the characters that only the audience can see.
What is onychoosteodysplasia?
Onychoosteodysplasia: This is the nail-patella syndrome, an hereditary condition characterized by abnormally formed (dysplastic) or absent nails and by absent or underdeveloped (hypoplastic) kneecaps (patellae). Other features of the syndrome include: Abnormality of the elbows interfering with full range of motion (pronation and supination), and