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Functional and magnetic resonance imaging outcome after polyurethane meniscal scaffold implantation following partial meniscectomy

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Abstract

Purpose

Prevention of the knee osteoarthritis following meniscectomy is implantation of an allotransplant or an artificial meniscus. We present retrospective study of our early results of the treatment using polyurethane meniscal scaffold.

Methods

From 2016 to 2020, we implanted nine polyurethane scaffolds (Actifit) after partial meniscectomy, five males and four females, age 36 (16–47), BMI 26.7 (17.2–35.9) kg/m2. Functional status, activity, pain, and MRI were assessed.

Results

FU 20.8 (6–48.5) months, 35.2 (0–68) months from the meniscectomy to the implantation. The average implant length was 46.1 (35–60) mm, average number of sutures was 7.6 (5–10). Lysholm score before surgery was 61.7 (49–85), after the surgery 86.4 (62–95) with p 0.0045, Tegner activity score before meniscectomy was 5.8 (4–7), after 3.8 (2–5), and after the scaffold implantation 4.6 (3–7) with p 0.0488. Before surgery, VAS score was 3.1 (2–4), and after 7.7 (5–9) with p 0.0042.

Pursuant to the Genovese classification, the last follow-up MRI showed a type 2 meniscal morphology in four cases and a type 3 in five cases. Seven patients had type 1 and two had type 2 signal intensity. On average, the absolute extrusion of a transplanted meniscus was 3.67 mm, and the relative extrusion was 0.58 mm. Extrusion progress was not detected.

Conclusion

Significantly improved knee functionality, increased level of physical activity, and reduced pain. MRI analysis revealed the meniscal transplant morphology and volume loss, as well as its extrusion without progression.

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Authors and Affiliations

  1. AKROMION, Special Hospital for Orthopaedic Surgery, Ljudevita Gaja 2, 49217, Krapinske Toplice, Croatia

    Miroslav Haspl, Denis Trsek, Drazen Lovric & Borna Strahonja

  2. County General Hospital Pozega, Osjecka 107, 34000, Pozega, Croatia

    Damir Matokovic

  3. Faculty of Medicine, University of Osijek, 31000, Osijek, Croatia

    Damir Matokovic

Authors
  1. Miroslav Haspl
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  2. Denis Trsek
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Correspondence to Miroslav Haspl.

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The study was approved by the ethics review committee of hospital (No 01/2020).

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

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Haspl, M., Trsek, D., Lovric, D. et al. Functional and magnetic resonance imaging outcome after polyurethane meniscal scaffold implantation following partial meniscectomy. International Orthopaedics (SICOT) 45, 971–975 (2021). https://doi.org/10.1007/s00264-020-04844-y

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  • DOI: https://doi.org/10.1007/s00264-020-04844-y

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