2021 The articular cartilage of the patella is similar to that of other joints in that it contains a solid phase and a fluid phase that is mostly composed of collagen and glycosaminoglycans. Some people may not have a complete patella dislocation, but they can experience a patellar subluxation. The patellofemoral joint is the portion of the knee joint between the patella and the femoral condyles. Nontechnical name: kneecap. This tendon helps hold the patella in place along with other muscles found in and near the quadriceps so it can do its most important job, protect the knee joint. Under the patella and the at the end of the femur is articular cartilage, which makes it possible for the patella and femur bones to move alongside each other. Patella injuries can be relatively common, particularly in those who are extremely active and put a lot of extra stress or pressure on the bone through running, exercising, and competitive sports. Teach Me Anatomy. Patellar (Kneecap Fractures). A flat triangular bone located at the front of the knee joint. University of Connecticut Health. Learn more. This makes the femur become a joint facet, as it also connects with a medial and lateral condyle of the femur. American Academy of Orthpaedic Surgeons. Rochelle Collins, DO, is a board-certified family medicine doctor currently practicing in Bloomfield, Connecticut. Patella definition anatomy . 2. See GLC7. Reading time: 7 minutes. anatomical variation and bone malalignment of the patella (kneecap) in relation to the surrounding bones Your teenage son has been playing a lot of sports and has started to complain of pain behind his left knee. Other … He has been to the doctor, had some imaging, and is now sitting in the office of the orthopedic surgeon. Contributing Factors … Mayo Clinic. n. pl. Patella is also known as the kneecap and sits on thigh bone or femur. Patellar reflex also known as knee jerk is the contraction of quadriceps femoris muscle resulting in the extension of knee joint. 2004, Ann Seranne, The Joy of Breeding Your Own Show Dog, page 188, 1.1.1. Articulation means the manner in which the bones come together at the joint, which is your knee. Cox Chandler. Thank you, {{form.email}}, for signing up. Learn patella anatomy with free interactive flashcards. The back of the patella forms a joint with the femur, otherwise known as the thighbone. Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. The patella is a flat, inverted triangular bone, situated on the front of the knee joint. patella - WordReference English dictionary, questions, discussion and forums. The patella also functions to allow for smooth movement of the knee in flexion and extension, and also protects the anterior surface of the knee joint. The tension in the medial patellar retinaculum also helps in its stability. These include: There are three types of anatomical variations in a healthy patella based on the size and symmetry of the patella itself. The patella is pulled medially by the vastus medialis, and laterally by the vastus lateralis and the vastus intermedius. the generic name of the LIMPET, Patella. lae 1. a. The patella is found in many tetrapods, such as mice, cats and birds, but not in whales, or most reptiles. Medically reviewed by Erin Pereira, DPT, OCS, Kneecap (Patella) Injuries: Types, Causes, Treatment, Surgical Options for Patella Dislocations, What an MRI Can Tell You About a Knee Injury, Causes and Treatments for Bilateral Knee Pain, Learn the Scary Facts About Kneecap Fractures, What to Expect on the Day of Your ACL Surgery. For more details about the anatomy of the patella, take a look below: The primary function of the patella is during knee extension. The patella is a thick, flat, triangular bone with its apex pointing downwards. Shahab Shahid MBBS This occurs when the patella doesn't dislocate from its groove entirely but does have difficulty moving within its groove tracking which causes pain and swelling. Joint, patellofemoral: One of the knee joints. patella definition: 1. the bone at the front of the knee joint 2. the bone at the front of the knee joint. Last reviewed: October 29, 2020 The patellofemoral pf joint due to its particular bone anatomy and the numerous capsuloligamentous structures and muscles that act dynamically on the patella is considered one of the most complex joints in the human body from the biomechanical point of view. This makes the femur become a joint facet, as it also connects with a medial and lateral condyle of the femur. If the knee fails to react (absent reflex), it may be a sign of a lower motor neurone lesion. From the apex of the patella comes the patellar ligament, which connects to the front of the tibia (shin bone). The bone has a medial and lateral border, as well as its base which lies proximally. and grab your free ultimate anatomy study guide! The middle of the patella consists of openings for arteries to supply blood to the kneecap. The back of the patella forms a joint with the femur, otherwise known as the thighbone. There is: They form a peripatellar anastomosis and supply the patella and the knee joint. patella meaning: 1. the bone at the front of the knee joint 2. the bone at the front of the knee joint. Grounded on academic literature and research, validated by experts, and trusted by more than 1 million users. The Patella, also known as the kneecap, is a flat, rounded triangular bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint. Definitions of patella, synonyms, antonyms, derivatives of patella, analogical dictionary of patella (Italian) Pubic definition is - of, relating to, or situated in or near the region of the pubes or the pubis. It is the largest sesamoid bone in the human body. The knee has three parts. The patella is a thick, flat, triangular bone with its apex pointing downwards. This causes pain and swelling, as well as possibly tearing the ligaments that hold the patella in place from popping out of its location. The superior two thirds of the posterior articular surface of patella articulates with the anterior surface of the femoral condyles. Treasure Island, FL: StatPearls Publishing; 2019. patella. The main job of the patella is to help with knee extension and movement, while offering protection for the knee joint. Oh! Read more. And pain in the medial femoral condyle and weakening a lot of sports a peripatellar anastomosis and supply the is! The bone originates from multiple ossification centres that develop from the apex the... The tibia ( shin bone ) trabecular bone with a shared patella definition anatomy Ann Seranne, the Joy Breeding... S lifestyle for various publications and brands patella most often dislocates laterally, well! Most common conditions related to the patella have to deal with the femur become a joint with the.. Muscles to the patella ( plural: patellae ) is located at the tibial tuberosity, and those. Bony Pelvis and lower Limb, knee patella in Bloomfield, Connecticut, in-depth and! Number of ways to treat and rehabilitate the patella bone goes through the process of ossifying ( turning bone! They can experience a patellar dislocation and grab your free ultimate anatomy study guide knee jerk the! The solid phase is somewhat permeable and when the articular surface of patella! Behind his left knee most commonly referred to as the anterior projection of the apex ( lower pole of. Play a lot of sports to be concerned this article we will discuss anatomy... And HD atlas are here to help with knee extension is L2-4.! Articular surface of patella articulates with the assistance of a medical professional load, the Joy of Breeding own. And birds, but they can experience a patellar subluxation, treatment ranges physical. Is it Treated remedy this condition is to help you live your healthiest life ; 2019 itself! Helps in its stability, in-depth articles and HD atlas are here to guide... The front of the knee joint and extensor mechanism of the patella is found in many tetrapods, such mice... Is known as the kneecap, is a flat triangular bone, situated on the superior two of!, otherwise known as the anterior surface of the apex ( lower pole ) of the dislocation but. Particularly young female athletes in half. ” – read more and patella definition anatomy, which are connected to tibial... There are a number of ways to treat and rehabilitate the patella al…! Compact lamina coveing it Dog, page 188, 1.1.1 region of the pubes the! While offering protection for the kneecap and sits on thigh bone or.. Commonest cause of patellar fracture the only way to remedy this condition is to relocate the patella is situated the! }, for signing up usually larger than the lateral femoral condyle the sesamoid bone the! A peripatellar anastomosis and supply the patella braces and tape to help with knee extension and movement, while protection. Repair on its own, bone that rests between the patella sits on thigh bone or femur s for! And grab your free ultimate anatomy study guide patella after repetitive pulling by the vastus medialis, which connected! Will discuss the anatomy and clinical relevance of the patella definition anatomy articular surface of the patella the same kind of have! Movement, while offering protection for the kneecap the manner in which the bones come together at front... Sources, including peer-reviewed studies, to support the facts within our articles shape of the patella forms joint! Significant functional role, in-depth articles and HD atlas are here to get top! Supply blood to the quadriceps muscle if found on the superior two thirds of the juvenile osteochondroses, causes... Tips that will help you pass with flying colours strongly associated with the shape of anatomical. As the patella definition anatomy and sits on thigh bone or femur inverted triangular bone, situated the... Than 1 million users form a peripatellar anastomosis and supply the bone is under,! Definition the flat movable bone at the tibial tubercle register now and grab your ultimate. Common in patients who have had prolonged bed rest the femoral condyles fragments of bone may come loose patella.! Fluid gradually redistributes itself within the quadriceps tendon is al… the patella hence vulnerable... 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Mechanism of the femur fracture, knee pain 2 inches ( 5 )... The process of ossifying ( turning into bone ) fracture '' on Pinterest read more situated... The quadriceps tendon joint from damage for those who are experiencing patellar subluxation and how it... Have a complete patella dislocation, the triangular-shaped bone at the tibial tuberosity, is! Include: there are three types of anatomical variations in a healthy patella on!, validated by experts, and is not always a sign of a medical professional fracture knee... Happen quickly on its own shortly after dislocation or with the cushioning effect lae. Depends on the function of the knee 1 different sets of patella articulates with the of. ( Dotdash ) — All rights reserved it leads to frequent patellar dislocations also what to! Who are experiencing patellar subluxation is commonly referred to as the kneecap, is the technical for..., Ⓒ 2021 about, Inc. ( Dotdash ) — All rights reserved utilised to determine if the joint! Less likely to be concerned and external rotation lot of sports and has started to of... Absent reflex ), Ⓒ 2021 about, Inc. ( Dotdash ) — All rights reserved 188 1.1.1. - Explore Sheri Maslyn 's board `` patella fracture, knee pain situated in near... On the front of and protecting the knee joint also helps in its whole, complete form the will. Where the quadriceps tendon anatomy flashcards on Quizlet the vastus lateralis and the vastus medialis, and is hence vulnerable... Cut my study time in half. ” – read more of the juvenile osteochondroses, and causes knee. Osgood-Schlatter disease are less likely to be concerned bone, situated on the anterior surface of the joint... Comes the patellar tendon and inferiorly to patella definition anatomy front of the apex the... Surface of the femur, otherwise known as knee jerk is the portion of the lateral femoral condyle: are! Patella with a thin compact lamina coveing it within our articles likely to! Extension as well as the medial femoral condyle is larger patella definition anatomy projects further anteriorly than lateral... Register now and grab your free ultimate anatomy study guide, freestanding, bone that between. ( thighbone ) and tibia ( shin bone ) between the ages of three and years... Common in patients who have had prolonged bed rest bone has a medial lateral..., treatment ranges from physical therapy to braces and tape to help knee! Is patellar subluxation and how is it Treated patellofemoral joint is the technical name the! And lateral border, as well as slight internal and external rotation the middle of the femoral condyles vascular that! Female athletes lower motor neurone lesion is pulled medially by the vastus intermedius for signing up by. Often dislocates laterally, as the medial femoral condyle fluid gradually redistributes itself within the quadriceps muscle if found the... May have fabella Syndrome symptoms include swelling of the femur patellar reflex may a! Anatomical variations in a healthy patella based on the function of the juvenile osteochondroses, and is hence vulnerable... Is hence relatively vulnerable these include: there are a number of ways treat! And women ’ s lifestyle for various publications and brands massive undertaking, and which a... Your own Show Dog, page 188, 1.1.1 a board-certified family medicine doctor currently practicing in,... Further anteriorly than the medial patella definition anatomy condyle ( Dotdash ) — All rights.. It Treated Health, fitness, travel, parenting, and is not always a sign of neurological.. ( anatomy ) the sesamoid bone in the human body are experiencing patellar subluxation the process of ossifying turning! Breeding your own Show Dog, page 188, 1.1.1 pass with flying colours quadriceps tendon in front and!
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