Avulsion of radial collateral ligament of thumb

Case contributed by Dr Maulik S Patel

Presentation

Left thumb injury about 2 -3 weeks back. Complaining of pain and swelling on the radial aspect of the thumb metacarpophalangeal joint.

Patient Data

Age: 25 yrs
Gender: Female

Symptomatic thumb - Radial collateral ligament

  • There is avulsion at the proximal attachment site.
  • There is a tiny bone flake at the avulsed end of the ligament.
  • Dynamic stress scan showed a movement of avulsed bone flake favoring detachment of the ligament.
  • The ligament is deep to the overlying abductor aponeurosis.

Symptomatic thumb - Ulnar collateral ligament

  • Intact and normal echopattern.

Asymptomatic thumb - Radial collateral ligament

  • Intact and normal echopattern.

Case Discussion

Ultrasound findings favor avulsion of proximal attachment of radial collateral ligament of thumb at metacarpophalangeal joint. The ligament is deep to abductor aponeurosis meaning there is no 'Stener-like' radial collateral ligament lesion. Radial collateral ligament injury is less common than ulnar collateral ligament of thumb.  

PlayAdd to Share

Case information

rID: 57234
Published: 14th Dec 2017
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.