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Related Experiment Videos

Genu recurvatum in total knee replacement.

John B Meding1, E Michael Keating, Merrill A Ritter

  • 1Center for Hip and Knee Surgery, St. Francis Hospital-Mooresville, IN 46158, USA. jmeding@msn.com

Clinical Orthopaedics and Related Research
|December 4, 2003
PubMed
Summary

Genu recurvatum before total knee arthroplasty (TKA) is rare. While it can recur with neuromuscular disease, TKA generally resolves hyperextension deformities without recurrence if instability is avoided.

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Genu recurvatum deformities are uncommon prior to total knee arthroplasty (TKA), affecting less than 1% of patients.
  • The rarity raises concerns about deformity recurrence and post-TKA instability.

Purpose of the Study:

  • To investigate the behavior and recurrence of genu recurvatum deformities following total knee arthroplasty (TKA).
  • To identify factors influencing genu recurvatum recurrence and post-TKA outcomes.

Main Methods:

  • Preoperative evaluation of quadriceps, hamstrings, and gastrocnemius complex.
  • Thorough elucidation of the etiology of hyperextension, particularly neuromuscular disease.
  • Surgical focus on avoiding coronal plane instability during TKA.

Main Results:

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  • Genu recurvatum may be associated with genu valgum, ligamentous laxity, or neuromuscular disease.
  • In the absence of neuromuscular disease, hyperextension deformities typically do not recur after TKA.
  • Postoperative instability in the coronal plane is linked to increased extension.

Conclusions:

  • Preoperative assessment is crucial for understanding genu recurvatum etiology before TKA.
  • TKA is effective in correcting genu recurvatum, especially when neuromuscular disease is absent.
  • Avoiding residual coronal instability during TKA is vital for preventing postoperative hyperextension.