Orthopedic fixation with imagery analysis

Abstract

Methods of orthopedic fixation and imagery analysis are provided. Images of first and second bone segments attached to a fixation apparatus are captured. Fixator elements identified in the images can be used to obtain imaging scene parameters. Bone elements identified in the images can be used with the imaging scene parameters to reconstruct a three dimensional representation of positions and / or orientations of the first and second bone segments with respect to the fixation apparatus.

Description

[0001] Cross References to Related Applications [0002] This patent application claims priority from UK patent application serial number GB1008281.6 filed 19 May 2010, the entire content of which application is hereby incorporated by reference. Background technique [0003] Techniques for treating fractures and / or bone deformities may include the use of external fixators (eg, fixation frames) that are surgically mounted to bone segments on opposite sides of the fracture site. Paired radiographic images of the fixator and bone segment at the fracture site are taken. In general, radiographic images must be orthogonal or perpendicular relative to each other and aligned with the patient's anatomical axis. Data from the images is then manipulated using orthogonal projection techniques to construct a three-dimensional representation of the fixture and bone segments that can be used in developing a treatment plan, and which may include, for example, Bone segments realigned. [00...

AI Technical Summary

Problems solved by technology

[0004] However, the ability to obtain orthoradiographic images of the fracture site can be limited by factors beyond the surgeon's control, such as the maneuverability of the imaging device, the anatomical location of the fracture or deformity, and / or the ability to locate the severed limb for use. Patient Pain During Orthogonal Imaging

Limiting factors such as these introduce inaccuracies into the imaging process

These inaccuracies may have undesired consequences, such as improper alignment of bone segments during the healing process, compromised joints between bone segments, requiring additional rounds of radiographic imaging to facilitate alignment correction, or may even require additional surgical procedures

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