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Related Concept Videos

Fractures: Bone Repair01:27

Fractures: Bone Repair

Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the procedure...
Bones of the Lower Limb: Tibia and Fibula01:10

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The tibia is the main weight-bearing bone of the lower leg. It is larger than the fibula with which it is paired. The tibia is also the second longest bone in the body and is located right below the skin. The proximal end of the tibia forms the medial and the lateral condyle, which articulates with the condyles of the femur to form the knee joint. Between the articulating surfaces is the irregular elevated area known as the intercondylar eminence that serves as the inferior attachment point for...

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Correction of proximal tibia varus with external fixation.

Kashif Ashfaq1, Austin T Fragomen, Joseph T Nguyen

  • 1Limb Lengthening and Complex Reconstruction Service (LLCRS), Hospital for Special Surgery, New York, NY, USA.

The Journal of Knee Surgery
|November 15, 2012
PubMed
Summary

This study shows that using monolateral frames for simple proximal tibia varus deformities and Taylor spatial frames for complex cases is a safe and effective protocol. Both methods successfully corrected the varus alignment with minimal impact on joint motion.

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Area of Science:

  • Orthopedic Surgery
  • Biomechanical Engineering

Background:

  • Proximal tibia varus deformity can lead to significant biomechanical issues.
  • Correction of this deformity is crucial for long-term joint health.

Purpose of the Study:

  • To evaluate the success of a treatment protocol for proximal tibia varus using monolateral and Taylor spatial frames.
  • To compare the outcomes of different frame types based on deformity severity.

Main Methods:

  • Ninety-one limbs with proximal tibia varus underwent percutaneous proximal tibial osteotomy and external fixation.
  • Monolateral frames were used for varus < 10 degrees (36 limbs), and spatial frames for deformities > 10 degrees or multiplanar (55 limbs).
  • Patients were divided into neutral or overcorrected subgroups to assess alignment changes.

Main Results:

  • Monolateral frame group: correction time 15 days, time in frame 101 days. Postoperative mechanical axis deviation (MAD) improved significantly.
  • Spatial frame group: correction time 34 days, time in frame 130 days. Postoperative MAD also showed significant improvement.
  • Both groups demonstrated improved medial proximal tibial angle (MPTA) with no significant change in ankle or knee range of motion. One refracture occurred in each group.

Conclusions:

  • The established protocol for treating proximal tibia varus deformities is both safe and effective.
  • Monolateral frames are recommended for simple varus deformities.
  • Spatial frames are reserved for correcting larger or more complex multiplanar deformities.