Volar Plate Injury on X-ray: Imaging Findings
The volar plate is a strong ligament-like structure on the palm side of the PIP joint. It helps prevent the joint from bending backward. A jammed finger can stretch, tear, or avulse the volar plate from the base of the middle phalanx. X-rays look for a small fragment and joint alignment, while MRI or ultrasound can show the soft-tissue injury when symptoms are out of proportion to radiographs.
Common Symptoms
- PIP joint pain after the finger bends backward during a jam injury
- Swelling and tenderness on the palm side of the middle finger joint
- Difficulty fully bending or straightening the finger after injury
- Feeling that the joint is unstable or hyperextends too easily
What We Look For on Imaging
- Volar avulsion fragment at the base of the middle phalanx
- PIP joint subluxation, hyperextension pattern, or incongruent alignment
- Bone bruise or marrow edema around the injured joint on MRI
- Volar plate thickening, discontinuity, or retraction on MRI or ultrasound
- Associated collateral ligament injury or central slip injury
Frequently Asked Questions
Is a volar plate injury the same as a jammed finger?
A jammed finger is a broad description of the mechanism and symptoms. A volar plate injury is one specific diagnosis that can occur after hyperextension. The same injury can also involve a fracture, dislocation, collateral ligament tear, or tendon injury, which is why imaging and an exam are often paired.
What makes a volar plate injury unstable?
Large joint-surface fragments, persistent subluxation, and inability to maintain a reduced PIP joint raise concern for instability. Imaging helps estimate fragment size and alignment, while a hand clinician checks motion and stability before deciding between splinting, therapy, and surgical referral.
Sources
- Tyser AR, Tsai MA, Parks BG, Means KR Jr. Stability of acute dorsal fracture dislocations of the proximal interphalangeal joint: a biomechanical study. J Hand Surg Am. 2014;39(1):13-18.
- Leclère FM, Mathys L, Juon B, Vögelin E. The role of dynamic ultrasound in the immediate conservative treatment of volar plate injuries of the PIP joint: a series of 78 patients. Plast Surg (Oakv). 2017;25(3):151-156.
- Caggiano NM, Harper CM, Rozental TD. Management of proximal interphalangeal joint fracture dislocations. Hand Clin. 2018;34(2):149-165.
- Hanson ZC, Thompson RG, Andrews JR, Lourie GM. Boutonniere versus pseudoboutonniere deformities: pathoanatomy, diagnosis, and treatment. J Hand Surg Am. 2023;48(5):489-497.
Related Articles
Learn how X-rays and MRI help separate a jammed finger from a fracture, dislocation, volar plate injury, or tendon injury.
A plain-language guide to your hand or finger X-ray: how bones and joints should line up, and what fractures, avulsion fragments and arthritis look like.
Understand your imaging before your next appointment
MRI, X-ray or CT from a CD, folder or ZIP. A PDF report or photos of the films work too.
Free to open and preview, no account needed. An optional AI report from $10 explains your images in plain language, with questions for your doctor.
Your raw files stay on this device. Only rendered images and minimal context are sent when you request an AI report.
Medical Disclaimer: This page is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment. AI-generated analysis may contain errors. Always consult a qualified healthcare professional for medical decisions. Full Disclaimer