Soft tissue that connects the bones of your thumb together. In medical terms, this soft tissue is called a ligament.
Ligaments are strong bands of tissue that fasten the bone ends together and stabilize the joint.

There are two ligaments inside the knee that can be reconstructed with the assistance of the arthroscope: The cruciate ligaments restrict both the forward and backward motion of the knee and its rotation. They may be torn by sudden twisting motions of the knee beyond its normal range. Not all cruciate ligament injuries need to be reconstructed; it depends on your age, level of activity, type of activity, and what you expect from your knee. A frank discussion with your doctor will help both of you determine whether surgery would be beneficial.
If you enjoy active sports, it would be appropriate to have surgery.
If you have a sedentary-type job and are not active in your leisure time, you may not require surgery.
Soft tissue injuries are the most common injury in sport. Soft tissue refers to tissues that connect, support, or surround other structures and organs of the body.
Soft tissue includes muscles, tendons, ligaments, fascia, nerves, fibrous tissues, fat, blood vessels, and synovial membranes.
A Soft tissue injury (STI) is the damage of muscles, ligaments and tendons throughout the body. Common soft tissue injuries usually occur from a sprain, strain, a one off blow resulting in a contusion or overuse of a particular part of the body. Soft tissue injuries can result in pain, swelling, bruising and loss of function.

Risk -
A soft tissue injury generally involves one or more of the following structures via sprain, strain or direct blows:
Muscle - muscles are made up of fibres that shorten and lengthen to produce movement of a joint. Muscles are attached to bone by tendons.
Tendon - tendons are tough bone of slightly elastic connective tissue that connect muscle to bone.
Ligament - ligaments are strong bands of inelastic connective tissue that connect bone to bone.

Prevention -
Warming up, stretching and cooling down.
Undertaking training prior to competition to ensure readiness to play.
Including appropriate speed work in training programs so muscles are capable of sustaining high acceleration forces.
Including appropriate stretching and strengthening exercises in weekly training programs.
Gradually increasing the intensity and duration of training.
Maintaining high levels of cardiovascular fitness and muscle endurance to prevent fatigue.
Allowing adequate recovery time between workouts or training sessions.
Wearing appropriate footwear that is well fitted and provides adequate support and traction for the playing surface.
Wearing protective equipment, such as shin guards, mouth guards and helmets.
Ensuring the playing surface and the sporting environment is safe and clear of any potentially dangerous objects.
Drinking water before, during and after play.
Avoiding activities that cause pain.