Quantitative Measurement of Rotation in Phalangeal Fracture Malunion Using Computed Tomography Imaging-"Linkage...

Area of Science:

• Orthopedic Surgery
• Biomechanical Engineering
• Medical Imaging

Background:

• Malunion of thumb and finger fractures leads to significant cosmetic and functional deficits.
• Rotational deformities in multiple planes (coronal, sagittal, transverse) complicate surgical correction.
• Accurate quantification of transverse plane deformities is challenging with conventional imaging.

Purpose of the Study:

• To introduce a novel technique, linkage simulation, for precise quantitative measurement of rotational deformities in phalangeal fractures.
• To enable accurate surgical planning for corrective osteotomies.
• To predict postoperative outcomes through simulation.

Main Methods:

• Development of a linkage simulation technique for quantitative measurement of rotational deformities.
• Simulation of finger extension and flexion based on predicted joint rotational axes.
• Software-based simulation of surgical reduction and prediction of postoperative results.

Main Results:

• The linkage simulation technique allows for quantitative assessment of rotational deformities.
• Simulations enable determination of appropriate corrective osteotomy planes.
• Preoperative surgical simulation aids in predicting and achieving desired postoperative results.

Conclusions:

• Linkage simulation is a valuable tool for precise surgical planning in phalangeal fracture malunions.
• This technique addresses the challenge of quantifying transverse plane rotational deformities.
• It facilitates improved functional and cosmetic outcomes through accurate surgical correction.