Register for the Forum

  • After registration you will receive an email to verify your email address. Once confirmed, your account will need activation by an administrator. Once activated you will receive an email to confirm.

Forum Rules

In addition to the terms of use (below) the following rules apply

  • Discussion and post of any product off-label usage is prohibited.
  • Prior to uploading any medical images or other patient personal data, the users must ensure they have obtained the necessary permissions or consent to share these images in the Forum without restrictions and any personal data identifying features have been removed or blurred.
  • Misleading or factually untrue statements or posts about products or discussed cases are prohibited.
  • Any obscene, vulgar, discriminating or abusive language in your post or comments is prohibited.
  • When discussing cases, to avoid misunderstandings, refrain from using misleading, ironic or humorous comments.

Best practice

  • To make case discussions meaningful to other Members, please provide relevant background information on patients or cases using anonymized patient data.
  • Please check whether a topic / question is already being discussed before starting a new thread.
  • Allow email notifications to receive updates on discussions you are participating in.

Click here for the terms of use

The Knee Care Press

Weekly

The effect of femoral posterior condyle offset on knee joint function


While often successful in reducing pain, improving knee function and therefore quality of life, TKR does not necessarily restore full range of motion of the pre-operative joint.


A recent meta-analysis study sought to compare the effect of Posterior Condylar Offset (PCO) changes on knee joint function following TKR. Its findings suggest that PCO can have a major effect on the patient’s knee movement post operation.

The study showed some patients have more flexibility than others following their knee replacements. What became clear is that there were better recoveries and joint movement in patients with a posterior condyle offset of between 0 mm and 2 mm. A failure to reproduce this normal pattern means that it is possible for the rear of the tibial insert to impinge into the rear of the femur when the knee is in maximum flexion, such as when squatting, for example. Smaller components can help in reducing the possibility of increasing the PCO and also mean that less prosthetic material becomes necessary to fill the flexion space.

In conclusion, the authors noted “the close relationship between knee joint function and postoperative PCO changes in TKR patients”. This goes some way to suggest that PCO should be a consideration for surgeons in selecting the design and size of the femoral component.

Zhang et al. Journal of Orthopaedic Surgery and Research 2021 Feb 10;16(1):126. doi: 10.1186/s13018-021-02233-8. Read more here: https://pubmed.ncbi.nlm.nih.gov/33568164/

Email a Colleague

  • An email will be sent to your colleague with a link to the forum.