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Shoulder arthritis is a clinical condition in which the joint that connects the ball of the arm bone (humeral head) to the shoulder blade socket (glenoid) has damaged or worn out cartilage. Normally the ends of the bone are covered with hyaline articular cartilage , a surface so smooth that the friction at the joint is less than that of an ice ...
A typical ball joint with cutaway view (right) An inner tie rod end cut open to expose the ball joint. In an automobile, ball joints are spherical bearings that connect the control arms to the steering knuckles, and are used on virtually every automobile made. [1] They bionically resemble the ball-and-socket joints found in most tetrapod ...
The hardening of the shoulder joint capsule is central to the disease process. This is the result of scar tissue around the joint capsule. [14] There also may be a reduction in synovial fluid, which normally helps the shoulder joint, a ball and socket joint, move by lubricating the gap between the humerus and the socket in the shoulder blade.
Science & Tech. Shopping. Sports
The shape of the ends of the bones—Some joints normally have a large range of movement, such as the shoulder and hip. Both are ball-and-socket joints. If a shallow rather than a deep socket is inherited, a relatively large range of movement will be possible. If the socket is particularly shallow, then the joint may dislocate easily.
Joint account holders are people who share equal ownership of an account. For example, you and your spouse might be joint holders of your checking account. For example, you and your spouse might ...
Kyrie Irving plays on Jan. 25, 2025; a young fan recovers after he was hit by a ball Irving attempted to pass. At the Dallas Mavericks’ latest game, a young fan was accidentally hit by a ball ...
A 1990 survey conducted jointly between the NFLPA and Ball State University found that 65% of surveyed players had suffered a major injury (defined as one that caused them to miss at least eight games): among players that played before 1959 this number was 42%, but it jumps to 72% among those who played in the 1980s. Additionally, roughly 50% ...