312 - Clinical Result and Motor Function Assessment of Artificial Cervical D...

#312 Clinical Result and Motor Function Assessment of Artificial Cervical Disc Replacement with Prodisc-C

Cervical Therapies and Outcomes

Poster Presented by: Q. Zhou

Author(s):

Q. Zhou (1)

(1) Institute of Orthopaedics of Chinese PLA, Southwest Hospital, Third Military Medical University, Chongqing, China

Abstract

Objective: To evaluate the clinical efficacy and effects on the motor function of the replaced level and adjacent segment after artificial cervical disc replacement (ACDR) with Prodisc-C.

Methods: There were 20 patients who received the ACDR with Prodisc-C between April 2009 and February 2011. There were 9 patients with myelopathy, 8 with radiculopathy , and the left 3 with both symptoms. There were 17 participators received single level replacement, while the other 3 got two level replaced. All the patients made computerized tomography(CT) and magnetic resonance imaging(MRI) preoperatively to get an accurate diagnosis, and the VAS scores for neck and arm pain, the Japanese Orthopedic Association (JOA) scores for neck and the cervical spine radiographs have been taken preoperatively and at the scheduled follow-up visits postoperatively.

Results: All 20 participators but one were kept follow up 6 to 18 months. The manifestations including pain of the neck, the numbness of the limbers and the weakness of muscle complained by the patients before the surgery were alleviated dramatically. The VAS and JOA scores were significantly improved after the surgery (P< 0.01). There was significant increase of the range of motion(ROM) of the replacement segment pre- and postoperatively at 1, 3, 6 months (P< 0.01), and so did the results at 12 and 18 month (P< 0.05). There is no statistic difference (P>0.05) before and after ACDR procedure with regard to the height of the intervertebral space and the ROM of the upper and lower adjacent segment. No implant migration, cinch and ectopic ossification were found either.

Conclusion: ACDR with Prodisc-C showed satisfied clinical success during the shot-tern follow-up visit. There were great improvements on the ROM of the replaced level. The intervertebral space height and the ROM of adjacent segment were fairly normal. While the long-tern benefits still need to be followed up.