Introduction:

Reproduction of the articular line is one of the most important indexes to determine the satisfactory results of prosthetic knee surgery but there are few studies focused on the review of these cases in a medium term and less, in the development of chronic pain.

Material and methods:

Retrospective, longitudinal and observational study; which includes patients with a total primary knee arthroplasty in a period of 2017 to 2019 and whom will have a follow-up of a post-surgical year.

Results:

Of the 32 cases after one year of evaluation only 14 (44%) cases reported the presence of chronic pain. The analysis of the association between pain and the presence of displacement or restoration in the joint line showed to be significant (p = 0.0001), with Fisher’s exact test.

Conclusions:

Although the articular line is an important factor in determining the flexion, extension and range of movement, we conclude that the no restoration of the articular line is related to the development of the anterior post-surgical pain in a long term.