Knee joints are a type of synovial hinge joint formed between the femur, tibia, and the
patella. Knee joints are needed because they are critical in our ability to do activities such as:
walking, running, swimming, standing, crossing our legs, etc.… basically anything you can think
of that involves movement in the leg. To prevent collision of the leg bones during these
activities, there is a layer of tough, rubbery fibrocartilage known as the meniscus/shock absorber.
Knee joints are one of the strongest and most important joints in the human body. It
allows us to do all of our daily activities by permitting the flexion and extension of the lower leg
relative to the thigh while supporting our body weight. The range of motion of the knee is
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There are many types of forces that are applied throughout the day that the knee joint can
withstand. For example: initial ground/ground reaction forces (force exerted by the ground on a
body in contact with it), muscle forces, knee forces, compressive forces, ligament forces, and
joint contact forces.
The most common reason to have a knee joint replaced is to relieve severe arthritis pain.
Doctors may recommend knee joint replacement if: patients are having pain from knee arthritis
that keeps them from sleeping or doing normal activities, they cannot walk and/or take care of
themself, their knee pain has not improved using any other treatment, and to understand what
surgery and recovery will be like. Most of the time, knee joint replacement is done in people age
60 and older. Younger people who have a knee joint replaced may put extra stress on the
artificial knee and cause it to wear out early.
Without our knee joints, we would be wheelchair bound and not be able to do our daily
activities that we enjoy such as running around with friends or play a sport. Even people with
bad knees have the potential to use their knees like the everyday average person by having
The knee joint is formed by the articulation of the distal end of the femur and the proximal end of the tibia. The fibula is only involved to the extent that it serves as an attachment site for connective tissue. In this paper, the anatomy of the joint will be discussed.
In order for athletes to save their active lifestyles they need understand the ACL. The ACL is the most important ligament in the knee because it provides stability to the knee. Athletes have to be aware of the importance of the ACL and know its functions in order to preserve the ligament. The ACL otherwise know as the anterior cruciate ligament is the ligament in the knee that connects the upper leg bone which is the femur to the lower leg bone which is the tibia. The anterior cruciate ligament crosses with the posterior cruciate ligament inside the center of the knee joint to stabilize to the knee in movement.
To understand the importance of the ACL, the knee as a whole must be examined. The knee is formed by the femur, the tibia, and the patella. Several muscles and ligaments control the motion of the knee and protect it from damage at the same time. Ligaments are dense structures of connective tissue that fasten bone to bone and stabilize the knee. Two ligaments on either side of the knee, called the medial and lateral collateral ligaments, stabilize the knee from side-to-side. The ACL along with the posterior cruciate ligament are of a pair of ligaments in the center of the knee joint that form a cross. T...
During dynamic activities, the bony congruity of the joint surface and the acetabular labrum limit the magnitude of translation forces, while the ligamentous and muscular structures control rotational forces at the hip joint. Physiological features of the joint cartilage and synovium manage the residual forces and joint reaction forces that
...cient knee during activities of daily living, as they have yet to be determined ⁷². In understanding the factors contributing to the mechanism of non-contact ACL injury, investigators should consider whether the kinematics, kinetics and muscle activation strategies observed are the cause of increased ACL strain or compensation for other kinetic chain insufficiencies ²⁹. Further knowledge on how movement patterns and other kinetic chain structures affect ACL loads prove critical in enhancing future prevention strategies ²⁹ ³⁴. As with reconstruction, rehabilitation should aim to aid the knee in attaining its near-normal function ⁵⁵. Through producing rehabilitation programmes built around existing knowledge on the biological and mechanical properties of the ACL, objectives such as reduced pain, greater ROM and improved muscle function can be achieved ⁵⁵.
The purpose of the squat is to train the muscles around the knees and hip joints, as well as to develop strength in the lower back, for execution of basic skills required in many sporting events and activities of daily living. Because a strong and stable knee is extremely important to an athlete or patient’s success, an understanding of knee biomechanics while performing the squat is helpful to therapists, trainers, and athletes alike (11). Because most activities of daily living require the coordinated contraction of several muscle groups at once, and squatting (a multi-joint movement) is one of the few strength training exercises that is able to effectively recruit multiple muscle groups in a single movement, squats are considered one of the most functional and efficient weight-bearing exercises whether an individual’s goals are sport specific or are for an increased quality of life
Osteoarthritis (OA) is the most common form of arthritis, affecting more than 27 million Americans (LeMone, Burke, Bauldoff, 2011). It is caused when the cartilage in the joints breaks down, causing the bones of the joint to rub against one another. This causes pain, stiffness, and loss of motion in the joint. Osteoarthritis is most prevalent in those 65 and older, but can affect those of any age. In addition, African Americans and Hispanics report a higher incidence of arthritis than Caucasians (LeMone, Burke, Bauldoff, 2011). Although the cause is unknown, it is believed that the increasing age of the population, prevalence of obesity and injuries add to the progression of the condition. Osteoarthritis can affect any joint in the body; however, those of the hand, hip, and knee are often the most common. This condition may be asymptomatic, or may present symptoms including soreness, stiffness and pain. The symptoms are more common in the older population, those with limited activity levels, and those who are obese. Joint cartilage thins over time, causing an increased risk for symptoms in the elderly, and obesity puts extra pressure on the joints during activity. Osteoarthritis is commonly diagnosed with the use of a physical assessment along with results of radiology testing such as X-Ray and MRI.
Osteoarthritis can affect almost any joint in the body. That is why the symptoms for this disease vary. The most typical joints that may be affected are the ones that carry weight over the years, such as the knees, hips, and the lower back. Other joints like shoulders, elbow, and ankles are less likely to be affected unless the joint has been damaged before. Another way to think of this would be by naming the joints that allow us to lead active lives, such as depending on the back, hips, feet and knees for walking; shoulders and hands for lifting; or even all of the above for working. When these joints are affected, doing certain activities such as walking, climbing, and lifting objects ...
The word patella comes from the great latin language meaning shallow pan or shallow dish. The description of that word could not be more correct, it was meant in reference to balance of food but in anatomy’s case a balance of the body. The patella is a small bone located in front of the knee joint where the thigh bone (femur) and shinbone (tibia) meet. It protects the knee and connects the muscles in the front of the thigh to the tibia. The patella is one of two sesamoid bones found in the body, roughly triangular shaped in size. It’s thick consistency allows for the articulation of the femur, which in turn allows for body support and balance. The patella has multiple body functions with the primary being knee extension. The patella is essential for basic body functions including locomotion;
There are many causes for needing a bone replaced, a common one being arthritis. The hip and knee are both effective bones in the body when uncompromised by osteoarthritis because they are structurally designed to manage stress from loading in effective ways. In hip and knee replacement surgery, common surgeries, there are advantages and disadvantages relating to recovery time and lasting bone health. By examining the structure and functionality of the knee and hip with an emphasis on artificial bone, researchers are continuing to expand upon the field of bone replacement surgery.
In order to understand how the menisci can be injured, you must understand the basic anatomy of the menisci and why they are important. The menisci are two oval (semilunar) fibrocartilages that deepen the articular facets of the tibia and cushion any stresses placed on the knee joint. They enhance the total stability of the knee, assist in the control of normal knee motion, and provide shock absorption against compression forces between the tibia and the femur (Booher, 2000). Articular cartilage covers the ends of the bones that make up the joint. The articular cartilage surface is a tough, very slick material that allows the surfaces to slide against one another without damage to either surface. This ability of the meniscus to spread out the force on the joint surfaces as we walk is important because it protects the articular cartilage from excessive forces occurring in any one area on the joint surface, leading to degeneration over time (Sutton, 1999).
When an athlete catches the sound of their knee crack and pop, they better prepare themselves for a long journey. The Center for Injury and Policy (CIRP), from Science Daily, reports that, “Knees are the most accident prone part of the body in high school athletes.” Knee injuries are very common; in fact, they are responsible for 45% of the injuries that occur in high school athletics across America. Knee injuries are well known to not just those in the medical field, but also to athletes. Injuries to the knee are caused by many factors, and what happens after the injury has taken place is what’s most concerning (Science Daily).
The joints in a human body play a vital role in the movement of different parts. Malfunctioning of a single joint can lead to restricted movement, and pain. Knee is one of the most important joints in a body. If it suffers from any injury, or stops functioning as normal, then it can cause a lot of trouble while walking, or moving from one place to another. In such cases, certain treatments are suggested by the doctors. If the situation worsens, then knee replacement is the most advisable treatment for the person. What is knee replacement? What care should be taken after undergoing a knee replacement surgery? Are you intrigued to find out answer to these, and many such questions? Read the following post, which not only answers these questions,
The human foot is an incredibly complex part of the body, it is made up of twenty-six bones which is fully twenty-five percent of the bones in the entire body. The structure of the forefoot includes the five metatarsal bones and the phalanges. The metatarsal bones are for forward movement and provides attachment for several tendons. The phalanges, also known as the toes, movement take place in the joints. The foot movement only has two movements; inversion and eversion. All the joints in the hindfoot and midfoot contributes to these complex movements. The foot has two significant functions: weight bearing and impulsion, which both requires a high degree of stability. The foot must also be flexible so it is able to adapt to uneven surfaces. The various bones and joints of the foot are what allows the foot to be flexible. In order for the foot to be able to support any weight the various of bones must form an arch. The foot has three arches that are maintain by the shape of the bones and by the ligaments. The arches are supported by the muscles and tendons. A foot is a strong, flexible, and durable it allows us to daily activities as we please while carrying all the
Orthopedic is a very complex area of surgery and it requires experienced and dedicated surgeons who know what to do in their specific area. Orthopedic surgery is basically concerned with injuries and conditions that affect the musculoskeletal system. So whether you have problems with joints, bones, ligaments, tendons, nerves or muscles, this is where you need to start off.