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Related Experiment Videos

Bone morphing: 3D morphological data for total knee arthroplasty.

E Stindel1, J L Briard, P Merloz

  • 1Centre Hospitalier et Universitaire de Brest, Hôpital de la Cavale Blanche and Laboratoire de Traitement de l'Information Médicale, INSERM, ERM 0102 Brest, Grenoble, France. eric.stindel@chu-brest.fr

Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery
|October 4, 2002
PubMed
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This study introduces Bone Morphing, a new surgical method for total knee arthroplasty (TKA) that uses morphologic and geometric data without preoperative imaging. It improves accuracy by focusing on soft-tissue balance for better knee kinematics and anatomy.

Area of Science:

  • Orthopedic surgery
  • Biomedical engineering
  • Surgical navigation

Background:

  • Total knee arthroplasty (TKA) clinical outcomes depend on surgical accuracy.
  • Accurate TKA requires precise prosthesis alignment and soft-tissue balance.
  • Morphologic and geometric data are crucial for improving TKA results.

Purpose of the Study:

  • To present a novel method for performing TKA using morphologic and geometric data without preoperative imaging.
  • To integrate soft-tissue balancing into intraoperative planning for optimized kinematics and anatomy.
  • To offer an alternative to CT-based methods for TKA.

Main Methods:

  • A global method utilizing an optical 3D localizer for point digitization.
  • Morphologic data acquired through registration of sparse point data with a 3D statistical deformable model.

Related Experiment Videos

  • Mechanical axis construction using hip center kinematics and ankle center landmark digitization, with knee center determined by soft-tissue balance.

    • Main Results:

    • The Bone Morphing system has been used in a randomized clinical trial with 35 patients over 6 months.
    • Postoperative frontal alignment in the first 11 navigated patients was within 180 +/- 3 degrees.
    • Functional evaluation of soft-tissue balancing via fluoroscopy is ongoing over a 2-year study.

    Conclusions:

    • Bone Morphing is an accurate, fast, and user-friendly technique for obtaining essential morphologic and geometric data.
    • The method innovatively incorporates soft-tissue balancing into intraoperative planning.
    • Bone Morphing presents a viable alternative to CT-based TKA procedures.