ISAKOS: 2019 Congress in Cancun, Mexico
ISAKOS

2019 ISAKOS Biennial Congress ePoster #1054

 

Clinical Outcomes After Arthroscopic Posterolateral Joint Capsule Stabilization for Isolated Posterolateral Rotational Instability of the Knee

Shinichiro Takada, MD, Kitakyushu, Fukuoka JAPAN
Takayuki Nabeshima, MD, Kitakyushu, Fukuoka JAPAN
Hirotaka Nakashima, MD, Kitakyusyu, Fukuoka JAPAN
Akihisa Hatakeyama, MD, Kitakyushu, Fukuoka JAPAN
Akinori Sakai, Kitakyushu, Fukuoka JAPAN
Soshi Uchida, MD, PhD, Kitakyushu, Fukuoka JAPAN

Wakamatsu Hospital for the University of Occupational and Environmental Health Japan, Kitakyushu, Fukuoka, JAPAN

FDA Status Not Applicable

Summary

Arthroscopic stabilization of posterolateral joint capsule can provide favorable clinical outcome and return to play sports for patients with isolated posterolateral rotational instability.

Abstract

Background

Isolated posterolateral corner (PLC) injury is an uncommon injury that could be a source of unexplained knee pain and dysfunction. Recently, we demonstrated an entirely arthroscopic approach to stabilize the PLC, by stabilizing the posterior lateral joint capsule with lateral meniscus attached to the rim of the lateral tibial plateau.

Purpose

To evaluate clinical outcomes after arthroscopic stabilization of the posterior lateral joint capsule with the lateral meniscus for isolated Posterolateral Rotational Instability (PLRI) of the knee.

Method

Eleven patients undergoing arthroscopic stabilization of the posterior lateral joint capsule with the lateral meniscus for isolated PLRI were enrolled in this study. PLRI was defined as comprehensive physical examinations, including the dial test, the reverse pivot shift test, the external rotational instability test and high . Magnetic resonance imaging showed no significant abnormal signals of the fibular collateral ligament (FCL), popliteofibular ligament (PFL), and popliteus tendon. All patients underwent arthroscopic stabilization of the posterolateral joint capsule with lateral meniscus attached to the rim of the lateral tibial plateau. Clinical outcomes were evaluated using International Knee Documentation Committee (IKDC) subjective score and Knee Injury Osteoarthritis Outcome Score (KOOS). Outcomes were compared between pre-operative and final follow-up. The mean follow-up period was 24 months (range 10 ~ 33 months).

Result: Clinical outcomes were significantly improved compared to the baseline: IKDC subjective score (43.2 v 83.9, P = .003) and KOOS (63.1 v 89.6, P = .005) significantly improved at final follow-up compared to the baseline. Nine of 11 patients (82%) were able to return to play sport.

Conclusion

Arthroscopic stabilization of posterolateral joint capsule can provide favorable clinical outcome and return to play sports for patients with isolated posterolateral rotational instability.