Flexor
strain
100%
Muscles bend and flex by moving the arm to pick up an object or even weightlifting. you know lil Wayne
When a joint is bent, the muscles around that joint contract and shorten. This causes the joint to move, resulting in the bending or flexing of the joint. The specific muscles involved and the degree of contraction depend on the joint and the movement being performed.
None. OA is caused by ageing, obesity, genetics and joint injuries not muscles.
Flexing is the medical term meaning decreasing an angle as in bending a joint.
In addition to simple flexion (bending) and extension (straightening) movements, the knee joint is designed to allow for rotation, gliding, and rolling movements.
Flexion
Osteoarthritis can be responsible for the complete debilitation of the knee joint. which in turn can lead to the destruction of bone, muscle and other tissue in that area
Muscles are not jointed, though the bones they attach to may be. For example, your biceps muscle attaches to both your scapula (shoulder blade) and radius (one of the forearm bones). Contracting the muscle causes the elbow joint to bend.
The popliteus
a muscle which crosses a single joint refers to a single joint muscle.