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Talar dome access for osteochondral lesions.

Dawson Muir1, Charles L Saltzman, Yuki Tochigi

  • 1Tauranga, New Zealand.

The American Journal of Sports Medicine
|April 26, 2006
PubMed
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Osteochondral grafting for talar dome lesions can often be performed without osteotomy, accessing most of the talar dome perpendicularly. However, some central areas remain inaccessible, guiding surgical approach selection.

Area of Science:

  • Orthopedic surgery
  • Foot and ankle anatomy
  • Surgical techniques

Background:

  • Osteochondral grafting is a common treatment for talar dome lesions.
  • Current surgical approaches lack clear guidelines for optimal talar dome access.

Purpose of the Study:

  • To determine the feasibility of perpendicular access to the talar dome for resurfacing procedures.
  • To evaluate the efficacy of various surgical approaches, including osteotomies, in achieving optimal access.
  • To provide clinical guidelines for selecting surgical approaches in talar dome lesion treatment.

Main Methods:

  • Descriptive laboratory study involving dissection of nine human cadaveric ankles.
  • Evaluation of seven surgical approaches: four arthrotomies (anteromedial, anterolateral, posteromedial, posterolateral) and three osteotomies (anterolateral, distal fibula, medial malleolar).

Related Experiment Videos

  • Quantification of the accessible area for perpendicular access to the talar dome for each approach.

    • Main Results:

    • An average of 17% of the medial and 20% of the lateral talar dome were not accessible without osteotomy.
    • An anterolateral osteotomy increased sagittal plane exposure by 22% on the lateral aspect.
    • Malleolar osteotomies provided full medial and lateral access, but 15% of the central talar dome remained inaccessible perpendicularly.

    Conclusions:

    • Most of the talar dome is accessible for perpendicular resurfacing without malleolar osteotomy.
    • Osteotomies significantly enhance access, particularly for extensive talar dome lesions.
    • A central portion of the talar dome remains inaccessible to perpendicular resurfacing with standard surgical techniques.