Bandage

Material used to cover a wound.

Bankart's lesion

Avulsion or damage to the anterior lip of the glenoid as the humerus slides forward in an anterior dislocation.

Bennett's fracture

Fracture-dislocation to the proximal end of the first metacarpal at the carpal-metacarpal joint.

Bilateral

Pertaining to both sides.

Bimalleolar fracture

Bipartite

Having two parts.

Blister

Fluid accumulation under the skin caused by friction of the skin over a hard or rough surface causing the epidermis to separate from the dermis.

Boutonnière deformity

Rupture of the central slip of the extensor tendon at the middle phalanx resulting in no active extensor mechanism at the proximal interphalangeal joint.

Bowler's thumb

Boxer's fracture

Fracture of the 5 th metacarpal resulting in a flexion deformity due to rotation of the head of the metacarpal over the neck.

Brachial plexus

A complex web of spinal nerves (C5-T1) that innervates the upper extremity.

Bucket-handle tear

Longitudinal meniscal tear of the central segment that can displace into the joint leading to locking of the knee.

Bunion

Swelling and prominence of the 1 st metatarsal head associated with lateral shift of the great toe (hallus valgus).

Burner

Burning or stinging sensation characteristic of a brachial plexus injury.

Bursa

A fibrous sac membrane containing synovial fluid typically found between tendons and bones; acts to decrease friction during motion.

Bursitis

Inflammation of a bursa.