A Three-Dimensional Morphological Assessment for Evaluating Pre- and Postsurgery in Cervical Laminoplasty

Area of Science:

• Spinal Surgery
• Medical Imaging Analysis
• Biomechanical Engineering

Background:

• Evaluating surgical treatment efficacy, particularly for cervical laminoplasty, relies heavily on pre- and post-operative imaging.
• Accurate quantification of morphological changes is crucial for assessing surgical success and implant accuracy.

Purpose of the Study:

• To develop and validate an automatic quantification evaluation method for assessing cervical laminoplasty outcomes.
• To provide an objective basis for evaluating the efficacy of cervical laminoplasty using three-dimensional morphological analysis.

Main Methods:

• A superimposition method was used to precisely compare pre- and post-surgery imaging in patients undergoing cervical laminoplasty.
• Canal volume increase and canal expansion rate were calculated to quantify the degree of spinal canal expansion.

Main Results:

• Analysis of 31 patients (112 vertebral segments) revealed a significant increase in cervical canal area post-surgery (122.63 ± 30.34 mm² to 196.50 ± 37.10 mm²).
• The average cervical canal expansion rate was 64.42%, with C5 segments showing the maximum expansion (71.01%).
• Significant improvements in patient symptoms were observed post-operatively.

Conclusions:

• The developed automatic quantification method provides a reliable and objective means to assess morphological changes after cervical laminoplasty.
• This method minimizes variations due to human factors or equipment, offering a robust tool for evaluating surgical outcomes.