Knee joint distraction with spinal stimulation may improve outcomes in advanced knee osteoarthritis

February 04, 2022

1 minute read


Disclosures: The authors report no relevant financial information.


We have not been able to process your request. Please try again later. If you continue to have this problem, please contact [email protected]

Published results showed that knee joint distraction combined with spinal stimulation techniques significantly improved clinical and radiographic outcomes in patients with advanced knee osteoarthritis.

Researchers assessed clinical scores, including Japan Orthopedic Association (JOA) score, KOOS subscales, range of motion, joint space width, and semi-quantitative MRI , in 16 patients with advanced knee osteoarthritis who underwent knee joint distraction combined with spinal stimulation techniques and who had more than 2 years of follow-up. The researchers also analyzed all factors affecting clinical outcomes.

The results showed significant postoperative improvements in the JOA score and individual KOOS subscale scores. Upon removal of the device, researchers noted deterioration in joint flexion, which returned to preoperative levels at final follow-up. The researchers found no change in knee extension throughout the follow-up period. Joint line width had a statistically significant improvement from about 2.4 mm to 3.3 mm at last follow-up, according to the results. The results also showed a significant improvement in the postoperative semi-quantitative MRI score. The researchers reported several complications during the follow-up period and noted an association between patients with high BMI and poor clinical outcomes.

“The most important finding of this study was the significant improvement in mid-term clinical outcomes, as evidenced by improved clinical scores and enlargement of joint widths, after [knee joint distraction] combined with microfracture in patients with advanced knee osteoarthritis,” the authors wrote. “There were significant negative correlations between BMI and several clinical scores. However, there was no correlation between clinical scores and increased joint space, age at surgery and [femorotibial angle]. Therefore, we must be careful in applying [knee joint distraction] combined with spinal stimulation techniques for obese patients.

Comments are closed.