To evaluate the efficacy of 3 different types of cervical disc prosthesis (Prodisc-C, Mobi-C and Prestige-LP) in the treatment of cervical spondylosis.
A cohort, retrospective analysis will be performed of 150 patients who were in implementation of artificial disc replacement in our department from 2008 to 2012 and accepted a regular postoperatively follow-up up to 5 years, the sample will be divided into 3 groups according to prosthesis and 50 people in each group. The outcome will be measured among 3 groups respectively on the operation (such as operation time, intraoperative bleeding.), postoperative complications (such as prosthesis sinking, displacement and prolapse, adjacent segments degeneration and heterotopic ossification), photographic indicators and functional efficacy analysis and then a comparison for self-contrast pre- and post-operatively.
Study Type
OBSERVATIONAL
Enrollment
150
total artificial disc replacement
JOA score
The whole name is Japanese Orthopaedic Association Scores for Assessment of Cervical spondylosis, the range of JOA is 0-17 and the full score is 17 to represent a normal function.
Time frame: 5 years
prosthesis sinking
prosthesis sinking is defined by a sink of 2mm about the artificial disk postoperatively.
Time frame: 5 years
range of motion (ROM)
range of motion
Time frame: 5 years
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