Abstract:
STUDY DESIGN:This is a retrospective study. OBJECTIVES:(1) To analyze the incidence of second surgery after initial laminoplasty for ossification of the posterior longitudinal ligament (OPLL) due to disease progression, (2) to examine factors associated with poor surgical outcome. SUMMARY OF BACKGROUND DATA:Neurological deterioration after laminoplasty is frequently encountered due to OPLL progression. PATIENTS AND METHODS:Of 201 OPLL patients treated by laminoplasty at a single-institution, the 153 monitored for >3 years postsurgery were included in this analysis. Neurological findings were graded by the Japanese Orthopaedic Association (JOA) score. We retrospectively examined the incidence of second surgery due to OPLL progression. We also evaluated the clinical characteristics and the surgical outcomes after second operation to identify potential risk factors for poor outcome. RESULTS:Eight patients required a second surgery due to OPLL progression. Neurological recovery was achieved in 5 of these patients, whereas 3 exhibited continued dysfunction. Patients with poor recovery showed kyphotic changes of spinal alignment and high-intensity regions in the spinal cord on T2-weighted magnetic resonance images (T2-MRI). CONCLUSIONS:Only a small fraction of OPLL patients required a second surgery due to OPLL progression. Recovery was poor in those with clear high-intensity T2-MRI signals in the spinal cord.
journal_name
Clin Spine Surgjournal_title
Clinical spine surgeryauthors
Kawaguchi Y,Nakano M,Yasuda T,Seki S,Suzuki K,Yahara Y,Makino H,Kobayashi K,Kanamori M,Kimura Tdoi
10.1097/BSD.0000000000000747subject
Has Abstractpub_date
2019-04-01 00:00:00pages
E133-E139issue
3eissn
2380-0186issn
2380-0194journal_volume
32pub_type
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