Common Causes of Severe Knee Joint Pain – The knee is the joint that is located right in the middle of the lower limb, whose main function is flexion – extension, which allows you to vary the distance of the foot, with the trunk. Their stabilities d is very weak on bone since it is determined mainly by ligaments assets, liabilities and especially muscles.
The main movements of the knee are:
Flex: approximation of the posterior aspects of the thigh and calf.
Extension: Return from a flexed position to the anatomical position.
External rotation: foot wears out.
internal rotation: takes the tip foot inward.
Anatomy.
kneeThe stifle joint – patellar or knee consists of three bones, menisci and ligaments.
Femur: articulates with the patella (art. femorotuliana).
Tibia: articulates with the femur (femoral article).
Kit or patella: slides on the femur (patellofemoral article).
Meniscus: are sheets of fibrocartilage located on the tibia, whose function is to prevent friction between the two bones, act as shock absorbers and provide them with greater consistency to the joint, distributing the pressure, in addition to better stability to the joint.
‘s two, inner and outer meniscus.
Ligaments: their role is very important in fixing and stability, besides being proprioceptors.
ligamentosrodillaCan be distinguished:
ligament or patellar tendon: is the primary fastener with the knee bent, formed by the quadriceps tendons that cross over the patella.
Ligaments cross: prevent anteroposterior movements of the joint are the anterior cruciate ligament and the posterior cruciate ligament.
internal lateral ligament: is located on the inside and its role is to stabilize the knee laterally.
external lateral ligament: is located on the outside and their role is to stabilize the knee laterally.
patella: its main function is to protect the quadriceps tendon
This caught at the knee and is mobile while sliding on it, is bound by the fins patellar patellar meniscus ligament and patellar tendon.
Their instability is maximum at minimum extension and flexion.
Muscles that perform the moves:
Flex: Hamstrings (semitendinosus, and biceps semimenbranoso long), Twin internal and external popliteal.
Extension: quadriceps.
External rotation : tense fascia lata, biceps femoris long and short.
internal rotation: sartorius, semitendinosus and semimembranosus.