Radiological and clinical outcome of the operated and adjacent segments following cervical arthroplasty after a average 24 months follow-up

The purpose of this retrospective study was to determine theradiological outcome at the index and adjacent levels and clinical outcome of cervical total disc arthroplasty (TDA) using Prodisc-C after a average 24 months follow-up at a single centerMETHODS: 86 levels of 59 (28 F, 31M)cases with average 2 years f/up were included in this study. Younger patients with radicular pain, with no facet joint arthrosis and with preserved disc height >50% were selected for TDA. Radiological parameters including disc level height at the operated and adjacent levels, global cervical lordosis, segmental lordosis, range of motion, subsidence, facet arthrosis, adjacent segment degeneration (ASD) and heterotopic ossification were analysed. All surgeries were done by a single surgeon. All patients had prophylactic meloxicam for 3 weeks after surgery.RESULTS: Av. age was 39,5 ( 27-56 ) and av. f/up was 108 (12 w-6 y ) weeks. Operated levels were C3-4 (%4,6), C4-5 (%16,3), C5-6 (%48,8), C6-7 (%26,8), C7-T1 (%3,5). All patients had clinical improvement. NDI was improved from 46 to 9. There was a significant improvement in segmental kyphosis, global lordosis and disc height at the operated level with no significant change at the final f/up(table 1). There was no radiographic facet joint arthrosis at the index and adjacent levels 4 (%6,7) patients had radiographic signs of ASD at the cranial adjacent level while 5 (%8,4) patients had ASD at the caudal adjacent level. Heterotopic ossification (HO) was observed in 4 patients (%6,7) with a complete fusion in one patient.CONCLUSIONS: This study demonstrates a satisfactory radiographic and clinical outcome after prodisc-C TDA with a average 24-month follow-up.