The lumbarcurve in the lower back, which helps us maintain our balance as we stand and walk, also leaves us vulnerable to lower back pain and strain.
腰部脊椎帮助我们在站立和行走的时候保持平衡，当同时也使得我们的背部更易疼痛。
2
Meanwhile, the decrease of back muscles strength and unbalance of body muscles strength in degenerative spondylolisthesis patients induced abnormal lumbarcurve to break down lumbar stability.
同时，退行性腰椎滑脱患者腰背肌肌力下降，躯干肌肌力失衡导致腰椎曲度变化，进一步影响腰椎稳定性。
3
The three force system of the spine and fixed to play the role of traction, so that the spine flexible and flexibility, so that people can do the normal cervical curve, thoracic curve, lumbarcurve.