The Assessment of Paravertebral Ossification Progression After Cervical Disc Arthroplasty Based on CT Images: A Long‐term Follow‐up

• DOI: 10.1111/os.12743
• Publication Date: 2020-10-12T18:22:39Z
• Authors: Cheng Zeng; Wei Tian; Bo Liu; Mingxing Fan
• Keywords: Adult; Male; Total Disc Replacement; Ossification, Heterotopic; Middle Aged; 3. Good health; Disability Evaluation; 03 medical and health sciences; 0302 clinical medicine; Clinical Articles; Cervical Vertebrae; Humans; Female; Range of Motion, Articular; Tomography, X-Ray Computed; Follow-Up Studies; Retrospective Studies

Objective This study focused on the assessment of paravertebral ossification (PO) after cervical disc arthroplasty (CDA) using computed tomography (CT) images. Methods In this retrospective study, 52 patients (from 2004 to 2010) who received CDA at a single center were included (32 males). Preoperative and follow‐up X‐ray CT images all underwent single‐level collected. PO from C2/3 C7/T1 in each patient was graded based grading system. Each segment divided into operative level, adjacent or non‐adjacent level. The McAfee' classification system used grade plain film. range motion (ROM) scores neurological symptoms (Japanese Orthopaedic Association [JOA] score Neck Disability Index [NDI]) both preoperative final time acquired. Progression group compared chi‐square test. ROM between groups independent t ‐test. JOA NDI Mann–Whitney U Results average 81.2 months. comparison with status, progression development left right areas (the Luschka joints areas) level significantly more severe (area L,χ 2 value = 36.612, P < 0.001; area R, χ 39.172, 0.001) than groups. contrast, although prevalence higher that same segments, there no significant difference ( > 0.05) development. high‐grade (grades III IV) incidence rate (3.85%) lower L (42.31%) R (38.46%), but close A (5.77%) (1.92%). not different low‐grade (9.47° ± 4.12° vs. 9.76° 3.69°, 0.794). However, PO, (5.77° 3.32° 9.28° 4.15°, 0.001). There for (JOA, 16.2 1.1 16.8 0.9, 0.489; NDI, 8.9 6.1 8.0 7.3, 0.317). Conclusion High‐grade observed CDA, which difficult observe formation segments significant.