Abstract: BACKGROUND: The prognosis of patients undergoing percutaneous transforaminal endoscopic discectomy is poor, which is related to the lack of functional physical exercise. Conventional rehabilitation methods have limited efficacy, mainly because the rehabilitation methods are relatively single and lack specificity. Therefore, it is necessary to improve the overall functional physical exercise method. 
OBJECTIVE: To explore the effect of overall functional physical exercise on lumbar biomechanics in patients with lumbar disc herniation who underwent percutaneous transforaminal endoscopic discectomy.  
METHODS: 120 patients who met the percutaneous intervertebral foramen discectomy indication and underwent percutaneous intervertebral foramen discectomy operation in Henan Provincial People’s Hospital from April 2021 to September 2022 were selected as study subjects. They were randomly divided into traditional rehabilitation group and overall functional physical exercise group. Patients in the two groups received 8 weeks of traditional rehabilitation and overall functional physical exercise respectively. Before the exercise intervention and after 8 weeks of intervention, the IsoMed2000 isokinetic muscle strength testing system was used to conduct isokinetic muscle strength testing. The Oswestry Disability Index was used to evaluate lumbar spine function. The visual analog scale was used to evaluate the pain level. The anxiety self-rating scale and depression self-report scale were used to assess symptoms of anxiety and depression. After 8 weeks of exercise intervention, the modified Macnab efficacy evaluation standard was used to evaluate the efficacy. 
RESULTS AND CONCLUSION: (1) Compared with the traditional rehabilitation group, the peak torque and average power of flexion and extensor in the whole functional physical exercise group increased, the peak torque ratio of flexion and extension decreased, Oswestry disability index score, visual analog scale score, self-rating anxiety scale score and self-rating depression scale score decreased, and the excellent and good rate increased 8 weeks after treatment (P < 0.001). (2) It is concluded that compared with the traditional rehabilitation program, overall functional physical exercise after percutaneous intervertebral foramen discectomy in patients with lumbar disc herniation can effectively enhance lumbar biomechanics and function, relieve pain, reduce postoperative bad mood, and improve prognosis , which has high clinical value. 

Key words: lumbar disc herniation, percutaneous endoscopic discectomy, overall functional physical exercise, traditional rehabilitation, lumbar biomechanics