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ORIGINAL ARTICLE
Year : 2021  |  Volume : 16  |  Issue : 4  |  Page : 738-744

Functional outcome of surgically treated patients of ossified posterior longitudinal ligament of cervical and dorsal spine in Indian population – A single center retrospective analysis of 40 patients


1 Department of Orthopaedics, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra, India
2 Assistant Professor, Rajawadi Hospital, Mumbai, Maharashtra, India
3 Assistant Professor, KEM Hospital, Mumbai, Maharashtra, India

Correspondence Address:
Dr. Manojkumar Basavareddy Gaddikeri
Department of Orthopaedics, Seth GS Medical College and KEM Hospital, Mumbai, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ajns.AJNS_477_20

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Aims: The aim of the study was to retrospectively evaluate the neurological outcome in operated patients of ossified posterior longitudinal ligament (OPLL) of cervical and/or dorsal spine using modified Japanese orthopedic association (mJOA) score and find out the factors affecting the outcome. Settings and Design: The study design was a retrospective study. Materials and Methods: Forty operated patients of cervical and/or dorsal spine OPLL were included in the study. Neurological examination was conducted and analyzed using mJOA score pre- and postoperatively at 1, 6, and 12 months. Improvement in the mJOA score based on age, sex, type of OPLL, duration of symptoms, type of surgical procedure, and radiological parameters were calculated, analyzed, and compared with previous records of the patient. Results: Significant improvement in mJOA scores with mean preoperative being 12.27 ± 1.95 with 1-year postoperative 13.85 ± 2.02 (P < 0.0001) noted. There is a significant difference in mean mJOA scores in posterior approach with instrumentation (P < 0.0001) as compared with laminoplasty group (P < 0.005). Patients with occupancy ratio <60% had better results (P < 0.0001) as compared to those with occupancy ratio of >60% (P = 0.003). Patients with duration of symptoms >1 year had poorer results compared to those of <1 year duration. Mean ossification kyphosis angle was 19.4° ± 5.73°. Conclusion: OPLL is a progressive disease which causes severe neurological deficit if left untreated. OPLL in a young patient with short duration of symptoms, low occupancy ratio, and low ossification kyphosis had better chances of neurological recovery. Type of OPLL and sex of patient do not affect the recovery. OPLL managed early and surgically has better results irrespective of anterior or posterior approach with significant improvement in mJOA score. Decompression with fusion has better results than decompression alone.


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