What is boutonniere injury?

Boutonnière deformity is the result of an injury to the tendons that straightens the middle joint of your finger. The result is that the middle joint of the injured finger will not straighten, while the fingertip bends back.

How long does it take for a boutonniere deformity to heal?

Recovery from a boutonniere deformity takes anywhere from three weeks to many months depending on the severity of the condition. If the initial treatment was ineffective, a physician may prescribe additional therapy such as night splinting or bracing.

Can boutonniere deformity be fixed?

The takeaway. A boutonniere deformity is a fairly common complication of rheumatoid arthritis, osteoarthritis, and finger injuries. It’s often treated by wearing a splint when caught early. In more severe cases, you may need surgery to repair the tendons in your finger or straighten the middle joint.

What causes boutonniere?

Boutonnière deformity is a type of joint damage that happens mostly to fingers but can also happen to toes. It can happen because of an injury like a burn or a cut or can result from rheumatoid arthritis. The middle joint becomes stuck and the tip of the joint hyperextends.

What tendon is injured in boutonniere deformity?

Definition. A Boutonniere deformity is a deformity of the fingers in which the proximal interphalangeal joint (PIP) is flexed and the distal interphalangeal joint (DIP) is hyperextended. It is an extensor tendon injury over zone III.

What splint is used for boutonniere deformity?

A dynamic extension splint, known as a capener splint, is typically fabricated. It is a spring wire, three-point extension splint. It is designed to apply a small force to hold the joint at the end available extension range of movement (ROM), for long periods of time.

Why is it called boutonniere deformity?

This flexion deformity of the proximal interphalangeal joint is due to interruption of the central slip of the extensor tendon such that the lateral slips separate and the head of the proximal phalanx pops through the gap like a finger through a button hole (thus the name, from French boutonnière “button hole”).

What causes swan neck and boutonniere deformity?

Swan neck deformity is usually caused by weakness or tearing of the ligament in the middle joint. In some cases, the tendon is torn and weakened. Over time, it gets harder for your tendons to straighten the joint. This causes the joint to bend abnormally.

What happens with boutonniere deformity?

A boutonniere deformity results from an injury to your top tendon. The injury stops the middle joint of your affected finger from straightening out, so it stays permanently bent. If left untreated, the deformity gets worse with time. The result is permanent joint damage and impaired finger function.

Is boutonniere deformity painful?

Other symptoms of Boutonnière deformity include: Swelling over the central slip (top middle of injured finger) Painful and/or swollen joints in the affected finger. Inability to bend the distal phalanx downward or straighten the finger.

Can boutonnière deformity cause permanent damage?

Unless this injury is treated promptly, the deformity may progress, resulting in permanent deformity and impaired functioning. The characteristic shape of Boutonnière deformity. The middle joint of the affected finger will not straighten, while the tip of the finger bends back. Anatomy

How do you get boutonnière deformity?

Cause Boutonnière deformity is generally caused by a forceful blow to the top (dorsal) side of a bent (flexed) middle joint of a finger. It also can be caused by a cut on the top of the finger, which can sever the central slip (tendon) from its attachment to the bone.

When is surgery an option for boutonnière deformity?

While nonsurgical treatment of boutonnière deformity is preferred, surgery is an option in certain cases, such as when: 1 The deformity results from rheumatoid arthritis. 2 The tendon is severed. 3 A large bone fragment is displaced from its normal position. 4 The condition does not improve with splinting.