Preliminary observation of CoflexTM in the treatment of lumbar and leg pain OBJECTIVE: It is to initially explore the clinical efficacy of CoflexTM in the treatment of lumbar and leg pain through clinical application. DATA AND METHODS: We have treated 30 patients with lumbar spinal stenosis and disc herniation with CoflexTM since December 2007, and 22 cases obtained more than 3 months follow-up. Among them, 12 cases were male and 10 cases were female. Age:. Clinical diagnosis was confirmed by symptoms and signs, combined with radiographs and MRI, including 14 cases of spinal stenosis and 8 cases of disc herniation. The clinical symptoms were low back pain, intermittent claudication, and radiating pain in the lower limbs. The surgical procedures were divided into three types: 18 cases of single-segment Coflex, 2 cases of continuous double-segment Coflex, and 2 cases of single-segment PLIF+Coflex. Coflex models: 8 of 8mm, 14 of 10mm, and 2 of 12mm. Indications for surgery included: (1) single- or double-segment spinal stenosis in the lumbar 3-5 segment; (2) single-segment disc prolapse with clear symptoms of low back pain; (3) adjacent segment degeneration requiring fusion; (4) the presence of lumbar physiological protrusion. Contraindications: (1) loss of lumbar physiological protrusion or retroflexion; (2) definite segmental instability; (3) vertebral slippage of degree II or higher; (4) overly obese individuals. RESULTS: The follow-up time of this group was 3-9 months, with a mean of 5.4 months. Discussion: Coflex is a new technology recently applied in clinical practice, and the clinical indications have yet to be explored; Coflex implantation can play the following roles: (1) reduce posterior extension of lumbar segments and alleviate spinal stenosis; (2) properly support the spinous process gap and effectively reduce the load on the synovial joint; (3) relieve the pressure on the posterior part of the disc; (4) have a certain degree of stabilization of the intervertebral space while preserving the appropriate range of motion (4) to preserve the proper range of motion, the spine has a certain role in stabilizing the intervertebral space. Motion Preservation is a new concept that addresses some of the drawbacks of fusion surgery and is more in line with the physiological state of the human body. However, due to the short period of clinical application and the small number of cases applied, its efficacy needs further clinical observation.