Cable face-pull with external rotation: Start sitting at a cable station holding a rope attachment with palms facing in. Your arms should be straight to start. Pull the rope toward your face, bending ...

Shoulder instability occurs when your shoulder joint (ball and socket) has lost is normal alignment (ball resting symmetrically in the socket), which causes your arm to lose its support. The most ...

The shoulder is a complex structure present on the upper body that connects the arms to the torso. It consists of many components that work together to provide stability and a wide range of movement.

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The labrum is a narrow piece of cartilage that supports the stability of the humerus bone to the shoulder socket. It is also where other ligaments come together to support the ball-and-socket joint, ...

Your hip is a deep ball-and-socket joint where your thigh bone fits securely into your pelvis. When you have hip instability, your thigh bone may feel like it doesn’t fit into the hip socket securely.

Your hip joints are ball-and-socket joints positioned where your thigh bone meets your pelvis. The hip joint is involved in many types of movement. It is also one of the largest joints in the body, ...

At its core, this system developed at Yamagata University in Japan uses a "simple" cross-spherical gear paired with a monopole gear to control pitch, roll, and yaw. Essentially, the same full range of ...

Different conditions can affect your hips over time, from arthritis to a sudden fall. Doctors usually recommend medication, physical therapy, or lifestyle adaptations as first-line therapies. However, ...

Shoulder instability occurs when the arm’s ball joint moves in and out of the shoulder socket joint. Chronically unstable shoulders can lead to loose shoulder joints that slip out of place repeatedly.