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Comparison of the recurrence risk of parameniscal cysts between patients treated with arthroscopic excision and arthroscopic decompression techniques

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

Abstract

Purpose

To compare the recurrence risk of parameniscal cysts between arthroscopic meniscectomy with open cystectomy (arthroscopic excision) and entirely arthroscopic techniques with intra-articular cyst decompression (arthroscopic decompression).

Methods

A retrospective longitudinal study was conducted at a medical centre in Taiwan between 2002 and 2012. Patients with symptomatic parameniscal cysts undergoing either arthroscopic excision or arthroscopic decompression were included. Parameniscal cyst recurrence was evaluated every 3 months after surgery. The recurrence risk associated with treatment group, cyst volume, and meniscal tear circumference was investigated.

Results

This study included 241 young to middle-aged men and women. Of these, 112 underwent arthroscopic excision and 129 underwent arthroscopic decompression. During an average 26-month follow-up period, the arthroscopic decompression group had a sixfold higher recurrence risk [prevalence: 4 and 21 %, respectively; hazard ratio, HR 6.0 (95 % confidence interval, CI 2.3–15.6); p < 0.001] than the arthroscopic excision group. Furthermore, meniscal tears >12 mm in circumference and a cyst volume >2.4 cm3 conferred a fivefold higher recurrence risk than both lesions of smaller dimensions, both in the overall population and in the arthroscopic decompression group [HRs 5.3 (95 % CI 2.3–12.2) and 5.35 (95 % CI 2.2–13.3), respectively; p values <0.001 for both].

Conclusions

The suggestion of our study is that the recurrence of parameniscal cysts may be strongly related to large cystic lesions and large meniscal tears. Arthroscopic excision is preferable for treating parameniscal cysts, which are large cystic lesions with large meniscal tears, to reduce the recurrence risk.

Level of evidence

III.

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Authors and Affiliations

  1. Department of Orthopaedic Surgery, Tri-service General Hospital, National Defense Medical Center, No. 325, Sec. 2, Cheng-Kung Rd., Neihu District, Taipei, 114, Taiwan

    Jung-Jui Chang, Chia-Chun Wu, Hsain-Chung Shen & Ru-Yu Pan

  2. Department of Surgery, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung, Taiwan

    Jung-Jui Chang

  3. Department of Public Health, Tzu-Chi University, Hualien, Taiwan

    Yi-Hwei Li

  4. Department of Medicine, Hualien Armed Forces General Hospital, Hualien, Taiwan

    Gen-Min Lin

  5. Division of Cardiology, Department of Internal Medicine, Tri-service General Hospital, National Defense Medical Center, Taipei, Taiwan

    Gen-Min Lin

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  1. Jung-Jui Chang
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  2. Yi-Hwei Li
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  3. Gen-Min Lin
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Correspondence to Ru-Yu Pan.

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Chang, JJ., Li, YH., Lin, GM. et al. Comparison of the recurrence risk of parameniscal cysts between patients treated with arthroscopic excision and arthroscopic decompression techniques. Knee Surg Sports Traumatol Arthrosc 24, 1547–1554 (2016). https://doi.org/10.1007/s00167-016-3998-0

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  • DOI: https://doi.org/10.1007/s00167-016-3998-0

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