Ball joint

mobility for patients with hip pain and joint deterioration. The implant contains two parts, both made of Cobalt-Chromium alloy. The top portion of the implant is spherical, which looks like half of a ball, with a thin cylindrical stem that branches out of the spherical piece. The parts are the acetabular cup and the femoral head. Discussion Acetabular Cup The acetabular cup is a part of a partial hip prosthesis that is inserted into the acetabulum, or hip joint and used as a socket. The…

Hip replacement surgery is performed to replace the hip joint by the prosthetic implant. The replacement can be either partial or total, based on the specifications of the condition of the patient. The surgery is performed for the patients, who suffer from the conditions like arthritis pain or treatment for the hip fracture and for the replacement of the femoral head and acetabulum head. And in the place of these heads, a new socket or a ball will be placed as a prosthesis or an implant. Hip…

Pain in this joint can be debilitating and interfere with activities of daily living essential to quality of life. Here is an overview of the joint, causes of problems and types of hip pain treatment. Basic Anatomy The hip joint is a major joint. It is classified as a ball-and-socket joint. The top of the femur (thigh bone) is rounded and fits into a socket in the pelvis. The proper name for the pelvic bone in question is acetabulum. The size and shape of the acetabulum makes this joint one…

This skill requires many different muscles, bones, joints and their actions. Before I perform my skill I jump over the rope twice quickly and then slowly once. To jump over the rope, I use flexion to bend my elbow joint, moving my radius and ulna in a circular motion from my elbow joint and my shoulder joint uses circumduction to bring the rope over my head. My bicep brachii allows me to flex my elbow to perform this skill. I flex both my knee joints to prepare to jump the rope and to gain…

Introduction Glenouhumeral Joint The glenohumeral (GH) joint, which is also known as shoulder joint, is a multiaxial ball-and-socket synovial joint. This joint is responsible for connecting the upper extremity of the trunk. The glenohumeral joint is one of the four joints that comprise the shoulder complex. The joint is considered to be the most mobile and least stable joint. The articular surfaces of the glenohumeral joint are the head of humerus and glenoid fossa of scapula. The humeral…

protective disk of fibrocartilage that surrounds and deepens the cavity of the Glenoid. The labrum allows for full range of motion, stability, and cushioning in the shoulder. It is attached to the edge of the shoulder socket and supports the ball of the joint -or the head of the arm bone, known as the humerus- in order to stay in place. When the fibrocartilage of the labrum is torn, it is considered a labral tear. There are three common labral tears; Posterior labral tears, Superior labral tear…

The knee is made up of four main things: bones, cartilage, ligaments, and tendons. The knee is a ball in socket and the elbow is a relatively simple hinge joint which only allows flexion and extension. The radius is smaller of the two forearm bones and sits on the outside of the joint.As spoken about before the cruciate ligaments are made up of two types of ligaments, the anterior and the posterior. They are often referred to the ‘crucial’ ligaments because it is important that the help the knee…

the femur and the Tibia. The patella is called a floating bone because most bones come to a joint and are connected but the patella is held just by the quadriceps tendon it's not connected to other bones or being a joint so that's why it’s called a floating bone. I was playing a lacrosse game and the ball was passed to me by the goalie and it was over my head just enough that I had to jump for the ball and when I came down on my feed my knee felt like I had just dislocated my…

both the HC and VJ start with hips, knees flexed and ankles dorsi-flexed, with muscles going from an eccentric state to a concentric state very quickly to produce a rapid movement, ending up with a triple extension of those joints (Astorino et al., 2013). As these are the main joints involved in both the HC and VJ, the major muscle groups activated are the quadriceps, hamstrings, gluteal, gastrocnemius, soleus and tibialis anterior (McBride, McCaulley, & Cormie, 2008). This type of movement is a…

Healthy joint The knee joint is a synovial joint and connects the femur to the tibia and consists of two joints the tibiofemoral joint, which joins the tibia to the femur and the patellofemoral joining the kneecap to the femur. These two joints work together to form a hinge joint allowing the knee to bend and straighten and to also rotate slightly from side to side. Muscles There are two main muscles groups of the knee, the hamstrings, quadriceps and muscles of the calf all work to flex,…