{"title":"无症状老年人群腰椎前凸分布指数：根据个体骨盆发病率和Roussouly型，上下腰椎前凸的作用。","authors":"Seung-Jae Hyun, Sanghyun Han, Youngbae B Kim","doi":"10.3340/jkns.2025.0086","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>This study aimed to elucidate the normative upper and lower lumbar lordosis (ULL and LLL) based on individual pelvic and spinal morphology within an asymptomatic elderly population.</p><p><strong>Methods: </strong>Whole spine standing radiographs were obtained from asymptomatic elderly populations who had not undergone previous spinal surgery. The lumbar lordosis (LL), lower LL and upper LL were measured. Pelvic incidence (PI) and the lordosis distribution index for the upper and lower lumbar spine (ULDI and LDI, respectively) were calculated. Pearson correlation and linear regression analyses were performed, and the mean value for each parameter was obtained according to PI subgroup (PI < 40°, 40° ≤ PI < 50°, 50° ≤ PI < 60°, and 60° ≤ PI) and \"theoretical\" Roussouly type.</p><p><strong>Results: </strong>Overall, data from 150 male were retrospectively collected in the study, with an average age of 64.1 ± 6.4 years. The mean height was 167.0 ± 5.5 cm, weight was 67.3 ± 9.8 kg, and body mass index was 24.1 ± 3.1 kg/m2. The average LL was -57.5° ± 9.0°, LLL was -39.7° ± 6.8°, and PI was 48.6° ± 8.6°. PT tended to increase with ULL, PI-LL, PI-ULL, PI-LLL, and ULDI and decrease with LLL and LDI. However, PT was not significantly related to LL. The mean ULDI and LDI were 30.4% ± 11.7% and 69.7% ± 11.7%, respectively. The differences between PI and LL (PI-LL) and between PI and LLL (PI-LLL) were -8.9° ± 8.0° and 9.0° ± 9.3°, respectively. As PI increased from low (<40°) to high (≥60°), ULDI increased significantly from 25.9% to 38.9%, while LDI decreased from 74.1% to 61.1%. Additionally, LDI varied by Roussouly type, ranging from 62.6% to 81.0%. The LDIs of Roussouly types 1 and 4 were significantly higher and lower, respectively, than those of types 2 and 3 (p < 0.001).</p><p><strong>Conclusion: </strong>As PI and Roussouly type increase, the contribution of ULL to overall LL rises, reaching up to 38.9%. Conversely, LLL substantially impacts LL in patients with a low PI and those classified as Roussouly type 1. PT is significantly related to LLL instead of LL according to PI.</p>","PeriodicalId":16283,"journal":{"name":"Journal of Korean Neurosurgical Society","volume":" ","pages":""},"PeriodicalIF":1.4000,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Lordosis Distribution Index in an Asymptomatic Elderly Population : The Role of Lower and Upper Lumbar Lordosis According to Individual Pelvic Incidence and Roussouly Type.\",\"authors\":\"Seung-Jae Hyun, Sanghyun Han, Youngbae B Kim\",\"doi\":\"10.3340/jkns.2025.0086\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objective: </strong>This study aimed to elucidate the normative upper and lower lumbar lordosis (ULL and LLL) based on individual pelvic and spinal morphology within an asymptomatic elderly population.</p><p><strong>Methods: </strong>Whole spine standing radiographs were obtained from asymptomatic elderly populations who had not undergone previous spinal surgery. The lumbar lordosis (LL), lower LL and upper LL were measured. Pelvic incidence (PI) and the lordosis distribution index for the upper and lower lumbar spine (ULDI and LDI, respectively) were calculated. Pearson correlation and linear regression analyses were performed, and the mean value for each parameter was obtained according to PI subgroup (PI < 40°, 40° ≤ PI < 50°, 50° ≤ PI < 60°, and 60° ≤ PI) and \\\"theoretical\\\" Roussouly type.</p><p><strong>Results: </strong>Overall, data from 150 male were retrospectively collected in the study, with an average age of 64.1 ± 6.4 years. The mean height was 167.0 ± 5.5 cm, weight was 67.3 ± 9.8 kg, and body mass index was 24.1 ± 3.1 kg/m2. The average LL was -57.5° ± 9.0°, LLL was -39.7° ± 6.8°, and PI was 48.6° ± 8.6°. PT tended to increase with ULL, PI-LL, PI-ULL, PI-LLL, and ULDI and decrease with LLL and LDI. However, PT was not significantly related to LL. The mean ULDI and LDI were 30.4% ± 11.7% and 69.7% ± 11.7%, respectively. The differences between PI and LL (PI-LL) and between PI and LLL (PI-LLL) were -8.9° ± 8.0° and 9.0° ± 9.3°, respectively. As PI increased from low (<40°) to high (≥60°), ULDI increased significantly from 25.9% to 38.9%, while LDI decreased from 74.1% to 61.1%. Additionally, LDI varied by Roussouly type, ranging from 62.6% to 81.0%. The LDIs of Roussouly types 1 and 4 were significantly higher and lower, respectively, than those of types 2 and 3 (p < 0.001).</p><p><strong>Conclusion: </strong>As PI and Roussouly type increase, the contribution of ULL to overall LL rises, reaching up to 38.9%. Conversely, LLL substantially impacts LL in patients with a low PI and those classified as Roussouly type 1. PT is significantly related to LLL instead of LL according to PI.</p>\",\"PeriodicalId\":16283,\"journal\":{\"name\":\"Journal of Korean Neurosurgical Society\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2025-06-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Korean Neurosurgical Society\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.3340/jkns.2025.0086\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CLINICAL NEUROLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Korean Neurosurgical Society","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.3340/jkns.2025.0086","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CLINICAL NEUROLOGY","Score":null,"Total":0}
Lordosis Distribution Index in an Asymptomatic Elderly Population : The Role of Lower and Upper Lumbar Lordosis According to Individual Pelvic Incidence and Roussouly Type.
Objective: This study aimed to elucidate the normative upper and lower lumbar lordosis (ULL and LLL) based on individual pelvic and spinal morphology within an asymptomatic elderly population.
Methods: Whole spine standing radiographs were obtained from asymptomatic elderly populations who had not undergone previous spinal surgery. The lumbar lordosis (LL), lower LL and upper LL were measured. Pelvic incidence (PI) and the lordosis distribution index for the upper and lower lumbar spine (ULDI and LDI, respectively) were calculated. Pearson correlation and linear regression analyses were performed, and the mean value for each parameter was obtained according to PI subgroup (PI < 40°, 40° ≤ PI < 50°, 50° ≤ PI < 60°, and 60° ≤ PI) and "theoretical" Roussouly type.
Results: Overall, data from 150 male were retrospectively collected in the study, with an average age of 64.1 ± 6.4 years. The mean height was 167.0 ± 5.5 cm, weight was 67.3 ± 9.8 kg, and body mass index was 24.1 ± 3.1 kg/m2. The average LL was -57.5° ± 9.0°, LLL was -39.7° ± 6.8°, and PI was 48.6° ± 8.6°. PT tended to increase with ULL, PI-LL, PI-ULL, PI-LLL, and ULDI and decrease with LLL and LDI. However, PT was not significantly related to LL. The mean ULDI and LDI were 30.4% ± 11.7% and 69.7% ± 11.7%, respectively. The differences between PI and LL (PI-LL) and between PI and LLL (PI-LLL) were -8.9° ± 8.0° and 9.0° ± 9.3°, respectively. As PI increased from low (<40°) to high (≥60°), ULDI increased significantly from 25.9% to 38.9%, while LDI decreased from 74.1% to 61.1%. Additionally, LDI varied by Roussouly type, ranging from 62.6% to 81.0%. The LDIs of Roussouly types 1 and 4 were significantly higher and lower, respectively, than those of types 2 and 3 (p < 0.001).
Conclusion: As PI and Roussouly type increase, the contribution of ULL to overall LL rises, reaching up to 38.9%. Conversely, LLL substantially impacts LL in patients with a low PI and those classified as Roussouly type 1. PT is significantly related to LLL instead of LL according to PI.
期刊介绍：
The Journal of Korean Neurosurgical Society (J Korean Neurosurg Soc) is the official journal of the Korean Neurosurgical Society, and published bimonthly (1st day of January, March, May, July, September, and November). It launched in October 31, 1972 with Volume 1 and Number 1. J Korean Neurosurg Soc aims to allow neurosurgeons from around the world to enrich their knowledge of patient management, education, and clinical or experimental research, and hence their professionalism. This journal publishes Laboratory Investigations, Clinical Articles, Review Articles, Case Reports, Technical Notes, and Letters to the Editor. Our field of interest involves clinical neurosurgery (cerebrovascular disease, neuro-oncology, skull base neurosurgery, spine, pediatric neurosurgery, functional neurosurgery, epilepsy, neuro-trauma, and peripheral nerve disease) and laboratory work in neuroscience.
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