What is Swan Neck Deformity?
The finger joint is a hinge joint that allows the bending and straightening of the fingers. Each finger is composed of 3 phalange bones joined by 2 interphalangeal joints (IP joints). The joint near the base of the finger is called the proximal IP joint (PIP joint), and the joint near the tip of the finger is called the distal IP joint (DIP joint).
Swan neck deformity is a condition in which the tip of the finger is bent down (DIP flexion) and the middle joint is bent back more than normal (PIP hyperextension). Swan neck deformity can affect any finger.
The affected finger looks like an outstretched neck of a swan. You may experience stiffness, snapping sensation and difficulty bending the affected finger. It may become almost impossible to perform certain activities such as button your shirt or grip an object.
Trauma and as well as certain conditions that damage the joints, ligaments and tendons of the fingers can cause swan neck deformity. These conditions include:
- Rheumatoid arthritis
- Parkinsons disease
- Cerebral palsy
- Psoriatic arthritis
Your doctor will take your medical history and perform a physical exam. Imaging studies will be ordered to observe the tendons, ligaments, and bones more closely.
Generally, the swan neck deformity finger can be treated non-surgically using specially designed splints that immobilize the finger and promote natural healing. In cases of fracture, complete bone healing may take 6-8 weeks, followed by physical therapy for strengthening.
In severe cases that don’t respond to conservative treatment, surgery may be recommended.
Anyone of the following surgeries may be performed:
Soft Tissue Repair
The skin, ligaments, and tendons around the PIP joint of your finger are surgically repaired or reconstructed. This restores the structure around the joint and restrains it from hyperextension. Severe swan neck deformity cannot be corrected by this method.
PIP Joint Arthroplasty
Joint arthroplasty is a surgical procedure in which the worn out or damaged surfaces of the joint are removed and replaced with artificial parts. The soft tissues surrounding the joint are balanced to restore the normal mobility of the joint.
Finger Joint Fusion
Finger joint fusion is a surgical procedure to remove the damaged bony ends of a finger joint followed by the insertion of a prosthesis to fuse the bones back together. Finger joint fusion is performed to relieve arthritis pain in the fingers.
Following surgery, you may wear a splint for a few weeks. Physical therapy and occupational therapy sessions will help reduce pain and inflammation as you heal and restore strength and range of motion.
- Wrist Fracture
- Fractures of the Hand and Fingers
- Wrist Sprain
- Flexor Tendon Injuries
- Distal Radioulnar Joint (DRUJ) Arthritis
- Ulnar Nerve Compression in Guyon's Canal
- Scaphoid Facture
- Industrial Hand Trauma
- Distal Radius Osteotomy to Correct Mal-Union (Crooked Painful Wrist)
- Distal Intersection Syndrome
- Distal Biceps Avulsion
- Adult Forearm Fractures
- Arthritis of the Hand and Wrist
- Arthritis of the Thumb
- Ganglion Cyst
- Boutonniere Deformity
- Carpal Tunnel Syndrome
- De Quervain's Tendinosis
- Dupuytren's Contracture
- Hand Pain
- Hand Infections
- Trapeziometacarpal (TMC) Arthritis
- Wrist Injuries
- Wrist Tumors
- Boxer's Fracture
- Swan Neck Deformity
- Carpal Instability
- Bennett's Fracture
- Kienbock's Disease
- Scapholunate Dissociation
- Triscaphoid Joint Arthritis
- Ulnar Carpal Impaction
- Triangular Fibrocartilage Complex Injury (TFCC)
- Guyon's Canal Syndrome
- Hand Masses
- Distal Radioulnar Joint (DRUJ) Instability
- Work Related Hand Injuries
- Wrist Ligament Tear and Instability
- Metacarpophalangeal Joint Arthritis