Abstract：
BACKGROUND: The incidence rate of degenerative spinal deformity (DSD) has gradually increased in the elderly. Currently, the relationship between the functional status of trunk muscle and the spinal-pelvic parameters of DSD patients remains unclear.
OBJECTIVE: This paper aims to explore the relationship between the two factors and provide new clues for exploring the mechanism of the occurrence and development of DSD.
METHODS: A total of 41 DSD patients treated in our hospital (DSD group) and 35 healthy volunteers (control group) were selected. Muscle strength was evaluated using an IsoMed-2000 isokinetic dynamometer, and the trunk flexor and extensor peak torque (PT) of subjects was measured at a low, medium, and high angular velocity of 30∘/s, 60∘/s, and 120∘/s, respectively. Hand grip strength (HGS) was assessed using an electronic grip dynamometer and Surgimap software was used to measure the spinal-pelvic parameters, including the sagittal vertical axis (SVA), thoracic kyphosis (TK), lumbar lordosis (LL), sacral slope (SS), pelvic tilt (PT), pelvic incidence rate (PI), and PI-LL, and the relationship between trunk muscle function and various parameters was analyzed.
RESULTS: Under the three angular velocities, the flexor and extensor PT values in the DSD group were lower than those in the control group, and only the extensor PT showed a statistically significant difference (P< 0.05). There was no significant difference in HGS between the two groups (P> 0.05). In the DSD group, the extensor PT at 30∘/s was significantly negatively correlated with SVA (P< 0.05). At 60∘/s and 120∘/s, the extensor PT was significantly negatively correlated with SVA and PT (P< 0.05).
CONCLUSIONS: Trunk extensor strength is significantly lower in DSD patients than in normal controls. The decline in trunk extensor strength in DSD patients is a type of local muscle dysfunction more closely related to the deformity, which is likely involved in the compensatory mechanism of DSD and may reflect the overall imbalance of the trunk.
OBJECTIVE: This paper aims to explore the relationship between the two factors and provide new clues for exploring the mechanism of the occurrence and development of DSD.
METHODS: A total of 41 DSD patients treated in our hospital (DSD group) and 35 healthy volunteers (control group) were selected. Muscle strength was evaluated using an IsoMed-2000 isokinetic dynamometer, and the trunk flexor and extensor peak torque (PT) of subjects was measured at a low, medium, and high angular velocity of 30∘/s, 60∘/s, and 120∘/s, respectively. Hand grip strength (HGS) was assessed using an electronic grip dynamometer and Surgimap software was used to measure the spinal-pelvic parameters, including the sagittal vertical axis (SVA), thoracic kyphosis (TK), lumbar lordosis (LL), sacral slope (SS), pelvic tilt (PT), pelvic incidence rate (PI), and PI-LL, and the relationship between trunk muscle function and various parameters was analyzed.
RESULTS: Under the three angular velocities, the flexor and extensor PT values in the DSD group were lower than those in the control group, and only the extensor PT showed a statistically significant difference (P< 0.05). There was no significant difference in HGS between the two groups (P> 0.05). In the DSD group, the extensor PT at 30∘/s was significantly negatively correlated with SVA (P< 0.05). At 60∘/s and 120∘/s, the extensor PT was significantly negatively correlated with SVA and PT (P< 0.05).
CONCLUSIONS: Trunk extensor strength is significantly lower in DSD patients than in normal controls. The decline in trunk extensor strength in DSD patients is a type of local muscle dysfunction more closely related to the deformity, which is likely involved in the compensatory mechanism of DSD and may reflect the overall imbalance of the trunk.
摘要：
背景：老年人退行性脊柱畸形（DSD）的发生率逐渐增加。目前,DSD患者的干肌功能状态与脊柱-骨盆参数之间的关系尚不清楚。
目的：探讨两者的关系，为探讨DSD发生发展的机制提供新的线索。
方法：选择我院收治的DSD患者41例(DSD组)和健康志愿者35例(对照组)。使用IsoMed-2000等速测力计评估肌肉力量，并且测量受试者的躯干屈肌和伸肌峰值扭矩（PT），中等,和高的角速度为30°/s，60○/s,和120〇/s，分别。使用电子握力计评估手握力（HGS），并使用Surgimap软件测量脊柱骨盆参数。包括矢状垂直轴(SVA)，胸椎后凸(TK),腰椎前凸(LL),骶骨斜坡(SS),骨盆倾斜(PT),盆腔发病率（PI），和PI-LL，分析躯干肌功能与各参数的关系。
结果：在三个角速度下，DSD组屈伸肌PT值均低于对照组,仅伸肌PT差异有统计学意义(P<0.05)。两组HGS比较差异无统计学意义(P>0.05)。在DSD组中，30〇/s时的伸肌PT与SVA呈显著负相关(P<0.05)。在60°/s和120°/s时，伸肌PT与SVA、PT呈显著负相关(P<0.05)。
结论：DSD患者的躯干伸肌强度明显低于正常对照组。DSD患者躯干伸肌肌力下降是与畸形更密切相关的一种局部肌肉功能障碍,这可能与DSD的补偿机制有关，并可能反映出主干的整体失衡。
目的：探讨两者的关系，为探讨DSD发生发展的机制提供新的线索。
方法：选择我院收治的DSD患者41例(DSD组)和健康志愿者35例(对照组)。使用IsoMed-2000等速测力计评估肌肉力量，并且测量受试者的躯干屈肌和伸肌峰值扭矩（PT），中等,和高的角速度为30°/s，60○/s,和120〇/s，分别。使用电子握力计评估手握力（HGS），并使用Surgimap软件测量脊柱骨盆参数。包括矢状垂直轴(SVA)，胸椎后凸(TK),腰椎前凸(LL),骶骨斜坡(SS),骨盆倾斜(PT),盆腔发病率（PI），和PI-LL，分析躯干肌功能与各参数的关系。
结果：在三个角速度下，DSD组屈伸肌PT值均低于对照组,仅伸肌PT差异有统计学意义(P<0.05)。两组HGS比较差异无统计学意义(P>0.05)。在DSD组中，30〇/s时的伸肌PT与SVA呈显著负相关(P<0.05)。在60°/s和120°/s时，伸肌PT与SVA、PT呈显著负相关(P<0.05)。
结论：DSD患者的躯干伸肌强度明显低于正常对照组。DSD患者躯干伸肌肌力下降是与畸形更密切相关的一种局部肌肉功能障碍,这可能与DSD的补偿机制有关，并可能反映出主干的整体失衡。
