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The percutaneous pie-crusting medial release during arthroscopic procedures of the medial meniscus does neither affect valgus laxity nor clinical outcome

  • Knee
  • Published:
Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

Abstract

Purpose

To analyze the effect of percutaneous pie-crusting medial release on valgus laxity before and after surgery and on clinical outcomes.

Methods

Eight-hundred fourteen consecutive patients who underwent an arthroscopic procedure for the medial compartment of the knee were evaluated retrospectively. Sex, age, type of operation (meniscectomy, meniscal repair, and posterior root repair), type of accompanying surgery (none, cartilage procedure, ligament procedure and osteotomy) were documented. Sixty-four patients who underwent percutaneous pie-crusting medial release (release group) and 64 who did not undergo medial release (non-release group) were matched using the propensity score method. Each patient was evaluated for the following variables: degree of valgus laxity on stress radiographs, Lysholm knee score, visual analog scale score, and International Knee Documentation Committee knee score and grade.

Results

At the 24-month follow-up, no significant increase in side-to-side differences in the valgus gap was observed in comparison to the preoperative value in the release group [preoperative, − 0.1 ± 1.3 mm; follow-up, − 0.1 ± 1.4 mm; (n.s.)]. The follow-up Lysholm score, visual analog scale score and International Knee Documentation Committee knee score and grade were similar between the two groups.

Conclusions

Percutaneous pie-crusting medial release is an additional procedure that can be performed during arthroscopic surgery for patients with a narrow medial joint space of the knee. Percutaneous pie-crusting medial release reduces iatrogenic injury to the cartilage and does not produce any residual valgus laxity of the knee.

Level of evidence

IV.

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Authors and Affiliations

  1. Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea

    Sang-Woo Jeon, Min Jung, Yong-Min Chun, Woo Seok Jung, Chong Hyuk Choi & Sung-Hwan Kim

  2. Department of Arthroscopy, Joint Research Institute, Yonsei University Health System, Seoul, Republic of Korea

    Sang-Woo Jeon, Min Jung, Yong-Min Chun, Chong Hyuk Choi & Sung-Hwan Kim

  3. Department of Orthopaedic Surgery, Gwangmyeong Sungae Hospital, Gyeonggi-do, Republic of Korea

    Su-Keon Lee

  4. Department of Orthopedic Surgery, Yonsesarang Hospital, Seoul, Republic of Korea

    Sung-Jae Kim

  5. Department of Orthopedic Surgery, Gangnam Severance Hospital, 211 Eonju-ro, Gangnam-gu, Seoul, 06237, Republic of Korea

    Sung-Hwan Kim

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  1. Sang-Woo Jeon
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Correspondence to Sung-Hwan Kim.

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The authors received no financial support for the Research, authorship, and/or publication of this article.

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The study was approved by the Ethical committee of the institution.

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Patients were informed, and they consented to conduct the study.

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Jeon, SW., Jung, M., Chun, YM. et al. The percutaneous pie-crusting medial release during arthroscopic procedures of the medial meniscus does neither affect valgus laxity nor clinical outcome. Knee Surg Sports Traumatol Arthrosc 26, 2912–2919 (2018). https://doi.org/10.1007/s00167-017-4827-9

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