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Background <p>The purpose of this study was to investigate the effect of meniscectomy and meniscoplasty on the lower limb axial alignment in patients with discoid meniscus (DM).</p> Method <p>A literature search was conducted in both Chinese and English databases (Chinese search bases: China National Knowledge Infrastructure, Wanfang, and China Science and Technology Journal Database; English search bases: PubMed, Embase, Cochrane Library, Web of Science). In the bilateral experiments, the weighted mean difference (WMD) with a 95% Confidence Interval (CI) was used as the pooled effect size, while the Effect Size (ES) with 95%CI was used for continuous variables in single-group experiments.</p> Results <p>Totally, 11 papers were included. There was no statistically significant difference in the post-arthroscopic surgery outcomes when comparing DM and non-DM in terms of mechanical axis deviation (MAD), mechanical lateral distal femoral angle (mLDFA), tibiofemoral angle (TFA), lateral knee space, and Lysholm score (all <i>P</i> &gt; 0.05). The mechanical proximal tibia angle (mPTA) improvement after DM surgery was lower than that after non-DM surgery (<i>P</i> &lt; 0.05). No significant differences were found in MAD, mLDFA, TFA, or lateral knee space after various arthroscopic DM surgeries (all <i>P</i> &gt; 0.05).</p> Conclusion <p>Postoperative lower limb axial alignment and knee function did not significantly differ between DM and non-DM patients, nor did they vary substantially with different surgical approaches for DM. This study suggests that further and more in-depth research is needed to assess the changes in lower limb axial alignment following surgery in patients with DM.</p>

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Effects of arthroscopic meniscectomy or meniscoplasty of discoid meniscus on lower limb axial alignment: a systematic review and meta-analysis

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年2月21日

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  • Chenghong Wen,
  • Qiang Hua,
  • Wenduo Qian,
  • Jide Su,
  • Mingming Lei

摘要

Background

The purpose of this study was to investigate the effect of meniscectomy and meniscoplasty on the lower limb axial alignment in patients with discoid meniscus (DM).

Method

A literature search was conducted in both Chinese and English databases (Chinese search bases: China National Knowledge Infrastructure, Wanfang, and China Science and Technology Journal Database; English search bases: PubMed, Embase, Cochrane Library, Web of Science). In the bilateral experiments, the weighted mean difference (WMD) with a 95% Confidence Interval (CI) was used as the pooled effect size, while the Effect Size (ES) with 95%CI was used for continuous variables in single-group experiments.

Results

Totally, 11 papers were included. There was no statistically significant difference in the post-arthroscopic surgery outcomes when comparing DM and non-DM in terms of mechanical axis deviation (MAD), mechanical lateral distal femoral angle (mLDFA), tibiofemoral angle (TFA), lateral knee space, and Lysholm score (all P > 0.05). The mechanical proximal tibia angle (mPTA) improvement after DM surgery was lower than that after non-DM surgery (P < 0.05). No significant differences were found in MAD, mLDFA, TFA, or lateral knee space after various arthroscopic DM surgeries (all P > 0.05).

Conclusion

Postoperative lower limb axial alignment and knee function did not significantly differ between DM and non-DM patients, nor did they vary substantially with different surgical approaches for DM. This study suggests that further and more in-depth research is needed to assess the changes in lower limb axial alignment following surgery in patients with DM.