Knee Exercise Case Study

The body frame that we designed helps align the knee and leg. Included are two parallel support bars on each side of the knee which with the help of the strap will comfortably secure and support the knee. With the arched support frame above the main body reduces the force and impact experienced by the force of knee by disturbing the weight. While carrying out daily task the knee will be required to bend and move to get the individual from one point to another. Reducing the force from the knee will result in more support and less amount of damage given to the knee. However, an important addition to our knee brace is that it reduces the movement of knee joint itself without affecting the mobility of the person wearing it. Added above and below the knee are knee support straps which immobilize the knee and add extra support. Nonetheless, the back-side of the knee is unaffected by the support and if free to bend without obstruction. As a result, this knee brace reduces wear and tear on weak knees. Baring the weight of the individual across the whole leg instead of focusing it on the knee

The purpose of this article is to compare the laxity and stiffness of the knee joint in male and female cadavers. Three different directions will be evaluated, anterior-posterior, internal-external, and varus-valgus. Females are at a two to eight times greater risk of an ACL injury than a male. This is due to the laxity in the joints. Females also have limited proprioception in the knee joint, which may attribute to some injuries. This study used a technique using cadaver knees to complete this study.

The knee is a major weight bearing joint that provides mobility and stability during physical activity as well as balance while standing. To provide this range of function, the joint relies on multiple soft-tissue structures to maintain bony alignment during weight bearing and movement. If the knee is exposed to forces beyond its physiologic range, bone or soft-tissue structures are at risk of injury (1).

The patient had a routine knee surgery with a protocol based recovery plan. The therapist still completes an assessment, but it is a specific one tailored to joint replacements. It is known as the ‘post-op joint replacement/fracture’ assessment form. The appearance of the limb is assessed (swelling, color, temperature, stiffness). ROM, gait pattern, and amount of pain the patient is experiencing is also considered. Based on the observations made determine which goals and plans are made. In the case of patient J.M the three goals were made. The first was to achieve -5 to 105 degrees of flexion in left knee. This was to be achieved through TKA (Total knee arthroplasty) protocol progressive exercises. The second was to increase functional strength in left leg and be achieved through progressive exercises as per TKA protocol.

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.

Transfemoral amputation, an amputation that occurs through the femur is one of the most frequently occurring type of amputation. Prosthetics or artificial limb is an effective way for the amputee to get back to her/his daily activities. However, the use of prosthetics have several problems. For instance, loss of muscle, incorrect gait behaviour and so on. Therefore, before one can design a comfortable socket for the amputees one should study the factors causing the discomfort. Studies reveal that it is the position of the residual femur that influences the socket design the most. Therefore, upon studying the motion of the residual limb one can design a suitable socket. To study the same a set of electronic sensors like pressure and force can

An elderly man with a new knee needs to exercise his muscles and joints to secure his new knee and ensure that he avoids other complications that come with a limping walk, or becoming a couch potato. The physical therapist has the huge role of encouraging him to keep up with his exercises so he can continue to walk, play golf and enjoy life. Physical therapy allows him to move easily again, keeping him

Objectives: The goal of the present study was to analyze the impact of different prosthetic slopes on the kinematics of a PCL-preserving TKA. The tested hypothesis was that the knee kinematics will be different for all tested tibial slopes.

Table 1 represents discrete kinematic parameters for the knee and ankle joint. The results indicate that conventional footwear significantly influenced both knee and ankle kinetic parameters.

During mid stance the peak height of the hip is seen to be higher on the prosthetic limb than in a non amputee. This is a result of the reduced flexion of the prosthetic knee. Also the characteristic of the prosthetic foot influences the peak height too. After contralateral foot contact an abrupt transition from hip extension to flexion is seen. In the late stance, an eccentric hip flexor activity is seen as compared to normal. This inturn generates higher hip flexor moment. This greater moment further decelerates the extending hip and ensures that the HAT segment does not lag behind as the amputee pulls themselves over the prosthesis.

Figure 4: Philip Wiles’s ball-and-cup arthroplasty developed in 1938. (Left) The cup was fixed to the acetabulum with two screws. Bolts passing through the femoral neck secured the femoral component. (Right) Radiograph of an implant after thirteen years. The lug and screws retaining the metal acetabulum have disintegreated, much of the neck of the femur has been absorbed, and the bolt has broken away from the head (18).

This was performed on an examination couch with the subject supine. A goniometer was used to measure the angle of knee flexion, where the point of rotation was positioned in line with the lateral epicondyle of the femur, and the stationary arm in line with the greater trochanter and midline of the femur. The moving arm was aligned with the lateral malleolus and midline of the fibula. 0o = full extension. An average of both knee flexion angles was taken.

Different degrees of knee flexion required for different occupations(Jensen and Eenberg 1996). The kneeling position has been used in mankind’s daily activities throughout history in a number of civilizations in Japan, China, India,

Also, during the squat, the patella has its greatest compression force on the femur at 90˚. As a result, if the patella is shifted laterally and there is a higher compressive force on a smaller surface area, there will be an increase in patellofemoral irritation and shear. In addition to the patellofemoral pain, increasing the valgus stress in load bearing predisposes the MCL to increased stress and injury. The MCL accounts for 80% of the valgus restraint on the knee.34 With the addition of weight due to the squat, this then places extra stress on the MCL and over time, could cause ligament laxity or for the ligament to tear if the stress is too great. This tends to happen during the ascent phase, where there is a valgus collapse, increased the stress placed on the MCL. The valgus moment also places increased stress on the ACL during both the initial ascent and during the full return.1 One way to prevent some of the valgus collapse and medial rotation of the femur

Left, above-knee prosthesis with a quadrilateral attachment, a hip joint and pelvic band suspension, endo-skeletal parts with a nonessential froth blanket and hose, a solitary hub knee, and a vitality putting away foot. Below are classes of knee gadgets, and each producer has numerous alternatives. More than 200 knees are right now accessible