International Orthopaedics

, Volume 42, Issue 8, pp 1897–1903 | Cite as

Effect of arthroscopic resection for discoid lateral meniscus on the axial alignment of the lower limb

  • Puyan Zhang
  • Qichun ZhaoEmail author
  • Xifu Shang
  • Yingming Wang
Original Paper



This study was designed to investigate the changes in the lower limb axial alignment and knee joint function after arthroscopic resection of discoid lateral menisci.


Pre-operative and post-operative full-length weight-bearing radiographs of the lower limb were obtained from 60 patients with discoid lateral menisci from August 2015 to August 2016. Twenty-four patients were treated with meniscectomy and 36 cases were treated with meniscoplasty. The axial alignment of the lower limb was measured, and changes in the lower limb axial alignment before and after surgery were analyzed. The effects of differing degrees of meniscal resection on the lower limb axial alignment were compared and analyzed. Knee joint function on the affected side was scored using the Lysholm knee scoring, Tegner activity, and International Knee Documentation Committee (IKDC) subjective scales before surgery and one, six and 12 months after surgery.


There were apparent changes in the lower limb axial alignment after surgery (p < 0.01). The changes were more conspicuous after a total meniscectomy than a meniscoplasty but were insignificant (p > 0.05). Intragroup comparisons of the Lysholm knee, IKDC, and Tegner scores before and after surgery revealed significant differences (p < 001). However, the differences were not significant between the two surgical approaches (p > 0.05).


For those with considerable genu varum or genu valgum after surgery, individualized therapy should be developed to correct the lower limb axial alignment and to prevent articular cartilage degeneration. Arthroscopic resection of a discoid lateral meniscus greatly improves knee joint function.


Discoid meniscus Axial alignment of the lower limb Biomechanics Arthroscopy 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This study was obtained from the hospital Ethics Committee. Authors had to obtain patient consent before enrolling participants in this study.

Informed consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© SICOT aisbl 2018

Authors and Affiliations

  • Puyan Zhang
    • 1
  • Qichun Zhao
    • 1
    Email author
  • Xifu Shang
    • 1
  • Yingming Wang
    • 1
  1. 1.Orthopedic Department, Anhui Provincial HospitalAnhui Medical UniversityHefeiChina

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