ConditionInjuries & poisoning
Volar Plate Injury
A volar plate injury is a sprain or tear of the thick ligament on the palm side of a finger joint, usually the middle (PIP) joint, which stops the finger bending backward. It happens when a finger is forced backward, often by a ball, and is a common cause of a "jammed finger." A small bone fragment may be pulled off. Most heal well with brief splinting and early movement, but stiffness is common if it is neglected.
Also called: Volar plate sprain, palmar plate injury, PIP joint hyperextension injury, jammed finger
At a glance
- What it is
- Injury to the ligament on the palm side of a finger joint, usually the middle joint.
- Cause
- Finger bent backward (hyperextended), often by a ball or fall.
- Symptoms
- Swelling, bruising and tenderness on the palm side of the joint, pain straightening or bending.
- Diagnosis
- Exam and X-ray to check for a small avulsion fracture or dislocation.
- Treatment
- Short splinting or buddy taping, then early movement. Recovery 4 to 8 weeks, swelling for months.
When to get help
See a doctor within a day or two
- A finger that looks crooked, rotated or dislocated, or a joint that will not straighten or bend
- Severe swelling, numbness, or a pale or cold fingertip
- An open wound over the joint
- Inability to straighten the fingertip or middle joint actively (possible tendon injury)
Book a routine appointment
- A jammed finger that is still swollen and painful after a few days, for an X-ray
- Stiffness or inability to fully straighten or bend the finger weeks after an injury
- The finger starting to curve into a swan-neck or bent position
Usually safe to manage at home
- A minor jam with mild swelling and full movement, improving within a few days with ice and buddy taping
Anatomy
Each finger has three joints. The volar plate is a thick, fibrous ligament on the palm side of each joint. It prevents the joint from bending backward (hyperextension). At the middle joint (proximal interphalangeal, or PIP joint), the volar plate attaches to the base of the middle finger bone. A forceful backward bend can stretch or tear it, or pull off a small piece of bone (a volar plate avulsion fracture).
Causes
- a ball striking the fingertip (basketball, volleyball, baseball, football)
- falls onto an outstretched hand
- catching a finger in clothing or equipment
- finger dislocations, which often involve the volar plate
Symptoms
- pain at the middle joint, especially on the palm side
- swelling around the joint, which may last for weeks to months
- bruising on the palm side
- pain when straightening or bending the finger
- reduced movement
- tenderness when pressing on the palm side of the joint
Types of volar plate injury
| Type | Description | Treatment |
|---|---|---|
| Sprain | Stretched or partially torn ligament | Buddy taping, early motion |
| Avulsion fracture, stable | Small bone fragment pulled off, joint aligned | Short splint or buddy taping, early motion |
| Unstable or with dislocation | Joint does not stay aligned, or large fragment | Extension-block splint, sometimes surgery |
Diagnosis
- examination: swelling, tenderness, alignment, stability testing, and checking that tendons work (you can actively straighten and bend each joint)
- X-rays: front and true side views to look for an avulsion fracture (a type of finger fracture), joint alignment, and the size of any fragment
It is important to distinguish a volar plate injury from tendon injuries such as mallet finger and central slip injuries, which need different splinting.
Treatment
Initial care
- ice wrapped in a cloth for 15 minutes several times a day for the first few days
- raise the hand to reduce swelling
- pain relief: ibuprofen or acetaminophen (paracetamol), following the label dose
- remove rings straight away before swelling increases
Splinting and movement
- stable injuries: buddy taping to the neighboring finger for 2 to 4 weeks, allowing gentle movement early to prevent stiffness
- avulsion fractures or unstable injuries: an extension-block splint that stops the finger straightening fully while allowing bending, adjusted gradually over 3 to 6 weeks
- long periods of complete immobilization are avoided because the PIP joint stiffens easily
Hand therapy
A hand therapist guides exercises to restore bending and straightening, reduce swelling with compression wraps, and splint at night if needed.
Surgery
Rarely needed. It is considered for:
- unstable joints or dislocations that cannot be kept aligned
- large fracture fragments involving the joint surface
- chronic instability or swan-neck deformity
Recovery
- pain and function improve over 4 to 8 weeks
- swelling of the joint can persist for 3 to 6 months or longer
- full return to sport is often possible within weeks with buddy taping
- some permanent thickening of the joint is common but usually not a problem
Complications
- stiffness, the most common problem, especially a flexion contracture (finger cannot fully straighten)
- chronic swelling
- swan-neck deformity if the volar plate heals loose, causing the middle joint to bend backward
- pseudo-boutonnière deformity from scarring, which resembles a true boutonnière deformity
- arthritis after significant joint fractures
Frequently asked questions
What is a volar plate injury?
It is a sprain or tear of the ligament on the palm side of a finger joint, usually the middle joint, caused by the finger being bent backward. It may pull off a small piece of bone. It is a common cause of a jammed finger.
How long does a volar plate injury take to heal?
Most volar plate injuries heal in 4 to 8 weeks with buddy taping or splinting and exercises. Swelling and some stiffness can last 3 to 6 months or longer, but usually do not limit function.
Should I buddy tape a jammed finger?
For mild, stable jams, buddy taping to a neighboring finger supports the joint while allowing movement. If the finger looks crooked, is very swollen, or you cannot move it properly, get an X-ray first.
Do I need an X-ray for a jammed finger?
An X-ray is recommended if swelling and pain persist beyond a few days, the finger looks deformed, or movement is limited. It checks for an avulsion fracture or dislocation that may need a specific splint.
Why is my finger joint still swollen months after a jam?
The middle finger joint often stays swollen for months after a volar plate injury as the ligament and joint lining heal. Gentle exercise, compression wraps and time help. See a hand specialist if stiffness persists.
Sources
This guide was written from current patient and clinical guidance, including:
- American Society for Surgery of the Hand: Finger sprains and jammed fingers
- American Academy of Orthopaedic Surgeons (OrthoInfo): Finger fractures and dislocations
- British Society for Surgery of the Hand: Volar plate injury patient information
- American Academy of Family Physicians: Common finger injuries
- MedlinePlus (US National Library of Medicine): Finger injuries