When a meniscus tears, this can result in unstable tissue flaps in an area where the surfaces usually approximate closely and fit together intimately.
Cartilage or “chondral” injury can occur due to direct impact, a twisting injury, or repetitive wear to the joint surface.
The anterior cruciate ligament is most commonly injured during cutting, pivoting, or landing on a flexed knee with a planted foot.
An ACL retear can occur simply due to "bad luck" in someone who returns to high-risk sports.
Arthritis invariably involves the breakdown of the cartilage, the slippery, gliding tissue that cushions the ends of bones where they contact one another in the joint.
This condition occurs when the rotator cuff tendons become pinched underneath the acromion process, a bony prominence at the top of the shoulder extending up from the scapula.
Acromioclavicular (AC) joint pain manifests as localized discomfort at the top of the shoulder.
When the rotator cuff becomes torn, the damaged area is usually located where the tendon connects with the bone of the humerus, the tendon insertion site.
Generally, rotator cuff surgery has a high patient satisfaction rate, but there are several reasons patients may experience poor results or complications after surgery.