Swan Neck Deformity – A swan neck deformity occurs when the structures that keep the middle joint of your finger from bending back too far are injured, stretched or weakened. The injury causes the middle finger (proximal interphalangeal) joint to hyperextend. This situation causes a disturbance in the tendon system causing the end finger (distal interphalangeal) joint to bend (flex). This makes the finger appear crooked. A swan neck deformity can cause pain and loss of function. It is most commonly caused by rheumatoid arthritis. Treatments include splinting, hand therapy, and surgery.
Trigger Finger and Trigger Thumb are common hand conditions that occur when the tendons in the thumb and fingers do not glide smoothly. Trigger Finger and Trigger Thumb causes the tendons to catch or get stuck when the fingers or thumb bend. This condition makes it difficult to straighten the fingers and thumb back out. It can also cause pain, discomfort and swelling. Trigger Finger can occur in one or more fingers or the thumb at the same time, or it may occur in different fingers with or without thumb involvement at different times. Trigger Finger and Trigger thumb usually begins with pain and discomfort at the base of the finger or thumb. You may also feel pain in the palm of your hand. The area may be swollen, and you may feel a small lump. You will have difficulty bending and straightening your fingers or thumb.