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Fig. 4 | BMC Musculoskeletal Disorders

Fig. 4

From: Application of a new body surface-assisting puncture device in percutaneous transforaminal endoscopic lumbar discectomy

Fig. 4

Application of the body surface-assisting puncture device during surgery. A, The iron positioning grid was used to locate the puncture point. C To measure the vertical distance between the midpoint of the posterior upper margin of the lower vertebral body to skin on the CT cross-section. Adjust the height of the body surface-assisting puncture device according to the measured distance to determine the puncture path, then the anesthesia was infiltrated layer by layer. Use the needle to puncture to the target point through the body surface-assisting puncture device

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