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Effect of Preoperative Diabetes on the Achievement of Forgotten Knee Status in Patients with Total Knee Arthroplasty

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Indian Journal of Orthopaedics Aims and scope Submit manuscript

Abstract

Background

Forgotten knee is the terminology which is used to describe a post-TKA patient who is completely unaware of his knee implant. The aim of the study is to determine whether preoperative diabetes negatively influences the achievement of forgotten knee status.

Methods

This is a retrospective cohort study. 300 patients (240 F:60 M) were studied. Patients were evaluated by an independent observer with FJS-12 score 2 weeks preop and at 6 weeks and 12 months after the operation. The patients with a FJS-12 score of ≥ 55 were considered to have achieved forgotten knee status. Out of 240 females, 96 had diabetes and out of 60 males, 18 had diabetes. Preoperative factors such as preop HBA1c, ROM, degree of deformity, VAS score and other associated co morbidities and postoperative factors such as HBA1c, ROM and hip–knee–ankle alignment were studied. Study was started with null hypothesis. The statistical difference was measured with Binominal proportion test and comparison of means t test.

Results

96 out of 144 non-diabetic females (66.67%) and 51 out of 96 diabetic females (53%) achieved forgotten knee status (statistically significant, p value = 0.0336, Binominal proportion test). 27 out of 42 (65%) non-diabetic males and 12 out 18 diabetic males (66%) achieved forgotten knee status (p value = 0.9411). The FJS-12 score at 1 year for non-diabetic females and diabetic females was 58.6 mean ± 12.6 SD and 53.8 ± 17.6, respectively, which is statistically significant, p value 0.0145. The FJS-12 at 1 year in non-diabetic and diabetic males was 60.1 ± 14.8 and 59.6 ± 17.3, respectively, p value = 0.9097.

Conclusion

Diabetic females have less chance of achieving a forgotten knee status than non-diabetic females. This understanding will help the operating surgeon in the preoperative patient counseling and modify the patient expectations.

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Data Availability

All data generated or analyzed during this study are included in this published article.

Abbreviations

TKA:

Total Knee Arthroplasty

ROM:

Range of motion

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Funding

The research did not receive any specific grant from funding agencies in the public, commercial, or not for profit sectors.

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Authors and Affiliations

  1. Orthopedic Surgeon, Holy Spirit Hospital, Mahakali Caves Road, Andheri east , Mumbai, 400093, Maharashtra, India

    Sanjay Bhalchandra Londhe & Nicholas Antao

  2. Orthopedic Surgeon, Criticare Superspeciality Hospital , Mumbai, India

    Ravi Vinod Shah

  3. Bio Medical Engineer, Meril Lifesciences, Mumbai, India

    Amit Pankaj Doshi

  4. Research Assistant, Criticare Hospital, Mumbai, India

    Kavita Subhedar & Atul Ranade

Authors
  1. Sanjay Bhalchandra Londhe
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  2. Ravi Vinod Shah
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  3. Amit Pankaj Doshi
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  4. Kavita Subhedar
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  5. Atul Ranade
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  6. Nicholas Antao
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Contributions

All named authors meet the International Committee of Medical Journal Editors (ICMJE) criteria for authorship for this article, take responsibility for the integrity of the work as a whole, and have given their approval for this version to be published.

Corresponding author

Correspondence to Sanjay Bhalchandra Londhe.

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Conflict of Interest

The authors declare there are no financial conflicts of interest to disclose.

Ethics Approval

Local ethics committee approval was obtained before the study. In addition, all patients consented to participate.

Informed Consent

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

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We hereby give our consent for publication.

Previous Presentation

This data were presented as an abstract oral presentation at the DKOU 2018 (German Congress of Orthopedics and Traumatology) in September 2018 and at the International Society for Technology in Arthroplasty (ISTA) in October 2018.

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Londhe, S.B., Shah, R.V., Doshi, A.P. et al. Effect of Preoperative Diabetes on the Achievement of Forgotten Knee Status in Patients with Total Knee Arthroplasty. JOIO 55, 1144–1149 (2021). https://doi.org/10.1007/s43465-021-00428-z

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