Diagnosis is based on
- the clinical history of the trauma and mechanism of the injury
- the clinical examination of the patient
- palmar ecchimosis, swelling and pain in the area of detachment
- inability to flex the DIP joint. Make sure that flexion of the DIP joint is
- the x-rays
AP, lateral and oblique x-rays are necessary for diagnosis. Be careful to
avoid overlap of other fingers in the x-rays.
Low-dosage radiographs, as used to visualize soft tissues, can be very useful
to identify small flakes.