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Related Experiment Videos

High tibial osteotomy using a dynamic axial external fixator.

A E Weale1, A S Lee, A G MacEachern

  • 1Nuffield Orthopaedic Centre, Headington, Oxford, United Kingdom.

Clinical Orthopaedics and Related Research
|January 12, 2001
PubMed
Summary
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Opening wedge high tibial osteotomy (HTO) with external fixation is a safer alternative to conventional HTO for knee osteoarthritis. This technique offers comparable or better outcomes and simplifies subsequent knee replacement if needed.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Unicompartmental knee osteoarthritis often necessitates surgical intervention.
  • Conventional high tibial osteotomy (HTO) is effective but carries risks.
  • Opening wedge HTO with external fixation presents a potentially safer alternative.

Purpose of the Study:

  • To evaluate the safety and efficacy of opening wedge HTO using hemicallotasis compared to conventional techniques.
  • To assess complication rates, survivorship, and patient-reported outcomes.

Main Methods:

  • Seventy-six opening wedge HTOs were performed on 65 patients with primary knee osteoarthritis.
  • Patients were followed for a mean of 6 years.
  • Outcomes included complication rates, survivorship, knee scores, and conversion to total knee replacement.

Related Experiment Videos

Main Results:

  • A single serious complication (chronic osteomyelitis) occurred; no neurologic or vascular issues were reported.
  • Survivorship at 5 and 10 years was 89% and 63%, respectively.
  • Mean knee score was 26.6 (out of 48), comparable or better than other methods; conversion to TKR was straightforward.

Conclusions:

  • Opening wedge HTO with hemicallotasis and external fixation appears to be a safer surgical option for knee osteoarthritis.
  • The technique demonstrates favorable outcomes and survivorship, comparable to or exceeding conventional methods.
  • This approach facilitates subsequent total knee replacement when necessary.