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KMID : 0388720170240010024
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Journal of Korean Society of Spine Surgery
2017 Volume.24 No. 1 p.24 ~ p.31
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Natural History of Lumbar Degenerative Kyphosis with Conservative Treatment
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Kim Whoan-Jeang
Chang Shann-Haw
Lee Gyu-Sang
Kim Yong-Ho
Park Kun-Young
Park Kyung-Hoon
Choy Won-Sik
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Abstract
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Study Design: Retrospective study.
Objectives: To evaluate the natural history of conservatively treated lumbar degenerative kyphosis (LDK).
Summary of Literature Review: The correlations between the clinical and radiologic parameters of general adult spinal deformity (ASD) are widely known. However, in LDK, dynamic sagittal imbalance is present during ambulation, meaning that its pathogenesis and natural history are different and not widely recognized compared to those of other forms of ASD, resulting in many controversies regarding treatment. To elucidate the natural history of LDK, we analyzed the clinical and radiologic outcomes of patients, comparing their first and final follow-up visits, and evaluated correlations among clinical and radiologic parameters.
Materials and Methods: From June 2006 to January 2014, 31 patients diagnosed with LDK who underwent conservative treatment were studied. The mean age of the patients was 72.5 years, and the mean follow-up period was 59.2 months. Clinical and radiologic evaluations were conducted on the first and final follow-up visits. Clinical evaluations were done using a visual analog scale and the Oswestry disability index, and radiologic evaluations were performed using spinal and pelvic parameters over a follow-up period of at least 24 months.
Results: Patients who were diagnosed with LDK and underwent conservative treatment showed no significant differences in their clinical outcomes between the first and final follow-up. Some radiologic parameters significantly progressed. There were no significant differences between clinical and radiologic parameters at the initial and final follow-up visits.
Conclusions: During the follow-up period of patients diagnosed with LDK, some radiologic parameters progressed. However, the progress of LDK and the clinical symptoms reported by the patients did not significantly change. Decisions regarding the treatment of LDK should not be made according to radiologic parameters showing the degree of deformity, but by carefully determining the patients' clinical symptoms and disability level.
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KEYWORD
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Lumbar degenerative kyphosis, Natural history, Conservative treatment
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