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Joint awareness after unicompartmental knee arthroplasty and total knee arthroplasty: a systematic review and meta-analysis of cohort studies

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Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

Abstract

Purpose

The purpose of this systematic review and meta-analysis is to evaluate the joint awareness after unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA). It was hypothesized that patients with UKA could better forget about their artificial joint in comparison to TKA.

Methods

A search of major literature databases and bibliographic details revealed 105 studies evaluating forgotten joint score in UKA and TKA. Seven studies found eligible for this review were assessed for risk of bias and quality of evidence using the Newcastle–Ottawa Scale. The forgotten joint score (FJS-12) was assessed at 6 months, 1 year, and 2 years.

Results

The mean FJS-12 at 2 years was 82.35 in the UKA group and 74.05 in the TKA group. Forest plot analysis of five studies (n = 930 patients) revealed a mean difference of 7.65 (95% CI: 3.72, 11.57, p = 0.0001; I2 = 89% with p < 0.0001) in FJS-12 at 2 years. Further sensitivity analysis lowered I2 heterogeneity to 31% after exclusion of the study by Blevin et al. (MD 5.88, 95%CI: 3.10, 8.66, p < 0.0001). A similar trend of differences in FJS-12 between the groups was observed at 6 months (MD 32.49, 95% CI: 17.55, 47.43, p < 0.0001) and at 1 year (MD 25.62, 95% CI: 4.26, 46.98, p = 0.02).

Conclusions

UKA patients can better forget about their artificial joint compared to TKA patients.

Level of evidence

III.

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Authors and Affiliations

  1. Department of Orthopedics, All India Institute of Medical Sciences, Bhubaneswar, 751019, India

    Sujit Kumar Tripathy & Paulson Varghese

  2. Department of Pharmacology, All India Institute of Medical Sciences, Bhubaneswar, India

    Anand Srinivasan

  3. Department of Orthopedics, All India Institute of Medical Sciences, Bathinda, India

    Tarun Goyal

  4. Department of Orthopedics, Boston VA Medical Centre, 150 S Huntington Avenue, Boston, MA, 02130, USA

    Prabhudev Prasad Purudappa

  5. Department of Orthopedics, Max Hospital, Mohali, India

    Ramesh Kumar Sen

  6. University Hospital for Wales, Cardiff, CF 144XW, UK

    Mallikarjun Honnenahalli Chandrappa

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  1. Sujit Kumar Tripathy
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Correspondence to Sujit Kumar Tripathy.

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This systematic review has been registered in PROSPERO (Regd no.: CRD42020198747). Each author certifies that he or she has no commercial associations (e.g., consultancies, stock ownership, equity interest, patent/licensing arrangements, etc.) that might pose a conflict of interest in connection with the submitted article.

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Tripathy, S.K., Varghese, P., Srinivasan, A. et al. Joint awareness after unicompartmental knee arthroplasty and total knee arthroplasty: a systematic review and meta-analysis of cohort studies. Knee Surg Sports Traumatol Arthrosc 29, 3478–3487 (2021). https://doi.org/10.1007/s00167-020-06327-4

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