What is the Elson test?
The Elson test, used for the diagnosis of the CS rupture, is performed by asking the patient to extend the PIP joint against resistance from a 90° flexed position over the edge of a table and assessing the resistance of DIP joint to flexion.
What is boutonniere deformity associated with?
Boutonniere deformity describes a medical condition in which the finger is flexed at the proximal interphalangeal joint (PIP) and hyperextended at the distal interphalangeal joint (DIP). This is usually a result of trauma in the acute setting and is caused by a rupture of the PIP central slip.
What does boutonniere deformity look like?
To be categorized as a Boutonniere deformity, a finger must experience both of the following problems (see Figure 1): The finger is bent at the middle joint OR the thumb is bent at the firstjoint, and; The finger or thumb is bent backwards at the end joint.
What is a pseudo boutonniere deformity?
The pseudo-boutonniere deformity is a boutonneire-like deformity resulting from a hyperextension injury to the proximal interphalangeal joint causing tearing of the volar soft tissues. It is seen almost exclusively in the little and ring fingers.
How do you treat a boutonniere deformity?
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.
Is boutonniere deformity painful?
The most common symptom of a boutonniere deformity is pain on top of the middle finger joint after experiencing an injury. The pain can present as long as three weeks after the incident. Other symptoms of boutonniere’s deformity include: Inability to straighten the finger at the middle joint.
Which is the correct description of a Boutonniere deformity?
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. It is also referred to as a “buttonhole deformity.”
Can a splint be used for a Boutonniere deformity?
If the boutonniere deformity remains untreated for more than 3 weeks, it becomes much more difficult to treat. An Oval-8 Finger Splint which is basically a three point splint It holds PIP in a straight line and allows DIP to move freely. It is easily removable and washable.
What happens to the lateral bands of a boutonniere?
As a result of this, the central slip is compromised and unable to achieve full extension, therefore leading to a subtle extensor lag. With the PIP joint in slight flexion, the lateral bands are subluxated volar and become fixed volar to the axis of rotation.
Can a Boutonniere deformity be secondary to Ra?
A Boutonniere Deformity (BD) may develop secondary to trauma to the extensor mechanism over zone III or zone IV (including a direct laceration to the extensor mechanism), secondary to rheumatoid arthritis (RA), and in the setting of burns. Reports of congenital Boutonniere deformities are also documented.