Not for the sake of body piercing, only in the event of surgical procedures should the joint capsule be pierced, then it is balanced with saline solution to prevent damage to the joint. The capsule contains fluid that allows the joint to move freely without friction damage by direct contact of the ball and socket. Piercing that capsule will damage the joint an repair will be difficult if not impossible once damage is done.
Ligaments are used to bind the articular ends of bones together reinforcing the joint capsule. These can be thickenings in the fibrous layer of the joint capsule or accessory structures that are located outside of the joint capsule.
The accessory ligament is the ligament found outside a joint capsule.
joint capsule
The two layers that make up the fibrous capsule is what reinforces the capsule. The stratum fibrosum and the stratum synovial are what prevents the joint from dislocating.
synovial
joint cavity
Repeat dislocations of the same joint are common because the initial dislocation stretches the joint capsule and ligaments, resulting in loose capsule which provides poor support of the joint.
Arthroplasty
tendon sheath
you will need a cast
arthrocele
A typical synovial joint has a joint capsule, a synovial membrane, synovial fluid, a joint cavity, and articular cartilage. A joint capsule surrounds the joint, supporting and stabilizing it. The synovial membrane is within the joint capsule. This membrane closely surrounds the joint and forms a joint cavity. The synovial membrane secretes synovial fluid that lubricates the articular surfaces of the joint. In some joints, the synovial membrane extends outside the joint capsule to form a bursa. The bursa cushions the joint. Bursae are in the knee, elbow, shoulder, and hip. Articular cartilage covers the articular surfaces of synovial joints to prevent excess wear and tear as they move against each other.