Lateral unicompartmental knee arthroplasty is a safe procedure for post-traumatic osteoarthritis after lateral tibial plateau fracture: a case-control study at 10-year follow-up.

Abstract

PURPOSE:

Very few studies focus on lateral unicompartmental arthroplasty (LUKA) in the setting of post-traumatic osteoarthritis (PTOA). The hypothesis of our study is that LUKA is an effective procedure for isolated lateral PTOA with similar outcomes to non-traumatic LUKA.

METHODS:

Between 1990 and 2016, eighteen LUKA performed for isolated lateral tibiofemoral osteoarthritis secondary to tibial plateau fracture were retrospectively reviewed (post-traumatic group) and matched with a control group of thirty-six LUKA performed for non-traumatic OA. Clinical (International Knee Score), radiological outcomes and revision rate were compared between the two groups with a minimum follow-up of three years.

RESULTS:

With a mean follow-up of 10.1 years, postoperative IKS scores were similar between the two groups (IKS Knee: 89.1 (control) versus 85 (p = 0.03) and IKS Function: 85.9 (control) versus 77.9 (n.s.). Clinical improvement was greater for the post-traumatic group. No difference was observed with regard to revision rate (3/18 (16.7%) cases in the post-traumatic group and 7/36 (19.4%) in the control group, n.s.) or polyethylene wear per year between the two groups. The revision free-survival rate was 64.8% for the post-traumatic group and 58.8% for the control group at 22-year follow-up (n.s.).

CONCLUSION:

LUKA is an effective procedure at long-term for patients suffering from isolated lateral PTOA with similar clinical and radiographic results compared to LUKA performed for non-traumatic OA and without increased risk of revision or prosthetic wear.

LEVEL OF EVIDENCE:

IV.

• Authors: Axel Schmidt, Thomas Barnavon, Timothy Lording, Elliot Sappey-Marinier, Cécile Batailler, Elvire Servien, Sébastien Lustig
• Journal: Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA (Knee Surg Sports Traumatol Arthrosc) Vol. 29 Issue 11 Pg. 3654-3663 (Nov 2021) ISSN: 1433-7347 [Electronic] Germany
• PMID: 33165637 (Publication Type: Journal Article)
• Copyright: © 2020. European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA).

Chemical References

• Polyethylene

Topics

• Arthroplasty, Replacement, Knee
• Case-Control Studies
• Follow-Up Studies
• Humans
• Knee Joint (surgery)
• Knee Prosthesis
• Osteoarthritis, Knee (surgery)
• Polyethylene
• Retrospective Studies
• Treatment Outcome