The cervical disc dimensions of Thai population

Abstract

The incidence of complications with cervical disc arthroplasty was 6.2% per treat level. The perioperative kyphosis, heterotopic ossification and migration may be occurred due to undersized prosthesis. Measurement of dimensions cervical disc of Thai population aim to be a pilot study to know the estimation dimensions cervical disc that refers to size of disc prosthesis device. Objectives of this research are measure dimensions cervical disc in Thai patients from MRI cervical spine and to prepare data for preoperative planning and cervical disc prosthesis design. otal mean maximum disc height in Thai population are C3-4 6.44 mm, C4-5 5.90 mm, C5-6 5.79 mm, C6-7 6.28 mm and C7-T1 6.21 mm The maximum and minimum distances from all samples are 6.63 mm and 5.47 mm respectively. Total mean sagittal diameter in Thai population are C3i 14.77 mm, C4s 14.77 mm, C4i 15.23 mm, C5s 15.13 mm, C5i 15.74 mm, C6s 15.62 mm, C6i 15.72 mm, C7s 15.69 mm, C7i 15.79 mm and T1s 16.00 mm. The maximum and minimum distances from all samples are 16.47 mm and 13.33 mm respectively. Total mean transverse diameter in Thai population are C3i 21.77 mm, C4s 22.15 mm, C4i 22.15 mm, C5s 22.95 mm, C5i 23.44 mm, C6s 24.23 mm, C6i 25.36 mm, C7s 26.28 mm, C7i 26.92 mm and T1s 26.95 mm. The maximum and minimum distances from all samples are 27.73 mm and 20.80 mm respectively. The differences on maximum disc height, sagittal diameter, and transverse diameter between males and females were significant. isc dimensions measurement can refer to range of size to manufacturer for the device to cover the use in Thai patients. The data fulfill the goal describe for cervical disc dimension for Thai population. The results of the project could provide design and data for the manufacturer and next step experiment for cervical disc prosthesis suitable for Thai population.