Relationship Between Lumbosacral Alignment and Lumbar Motor Control Determined by the Sahrmann Core Stability Test in Adolescents With Lumbar Spondylolysis

Yoshiyuki Imoo; Masaki Tatsumura; Kodai Tobita; Shunji Takei; Manabu Yokota; Takeo Mammoto; Atsushi Hirano

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Relationship Between Lumbosacral Alignment and Lumbar Motor Control Determined by the Sahrmann Core Stability Test in Adolescents With Lumbar Spondylolysis

VernacularTitle:発育期腰椎分離症患者における腰仙椎アライメントとSahrmann Core Stability Test による腰部モーターコントロール機能との関連性
Author: Yoshiyuki IMOO ¹ ; Masaki TATSUMURA ² ; Kodai TOBITA ¹ ; Shunji TAKEI ¹ ; Manabu YOKOTA ¹ ; Takeo MAMMOTO ² ; Atsushi HIRANO ²
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1. Depts. of Rehabilitation, Tsukuba University Hospital Mito Clinical Education and Training Center, Mito Kyodo General Hospital
2. Orthopaedic Surgery and Sports Medicine, Tsukuba University Hospital Mito Clinical Education and Training Center, Mito Kyodo General Hospital
From:Journal of the Japanese Association of Rural Medicine 2024;72(6):528-534
CountryJapan
Language:Japanese
Abstract: Patients with lumbar spondylolysis may have poor lumbo-pelvic function and improving lumbar segmental stability may take time. It is assumed that the stronger the lordosis, the poorer the lumbo-pelvic function; however, to our knowledge, evidence of this relationship is lacking. To clarify the relationship between lumbosacral alignment and lumbo-pelvic function in lumbar spondylolysis, we assessed lumbar lordosis and sacral slope in the standing lateral view on plain X-rays and Sahrmann Core Stability Test (SCST) results in 66 adolescents with lumbar spondylolysis with bone marrow edema. Based on SCST results, the patients were divided into those with level 1 or 2 core stability (low group) and those with level 3 or higher core stability (high group). No significant difference was found in lumbosacral alignment between the two groups. In adult patients with spondylolisthesis, the lumbar lordosis angle and sacral slope increases to maintain the center of gravity, but no such increase in compensation was evident in our patients who were young and without slip. These findings suggest that lumbo-pelvic function does not affect lumbosacral alignment in adolescents with spondylolysis. It should be noted that using the SCST alone to evaluate motor control may not be precise enough to determine the relationship between lumbosacral alignment and lumbo-pelvic function because the SCST may not have high enough sensitivity to assess trunk extensor muscles.