Spinal needle force monitoring during lumbar puncture using fiber Bragg grating force device.

A technique for real-time dynamic monitoring of force experienced by a spinal needle during lumbar puncture using a fiber Bragg grating (FBG) sensor is presented. The proposed FBG force device (FBGFD) evaluates the compressive force on the spinal needle during lumbar puncture, particularly avoiding the bending effect on the needle. The working principle of the FBGFD is based on transduction of force experienced by the spinal needle into strain variations monitored by the FBG sensor.

Surgical technique and outcome of uncemented THR using HA coated stems in fused and deformed hips due to ankylosing spondylitis.

Background: Uncemented Total Hip Replacement (THR) is at present an accepted treatment in patients with severe deformity of the hip caused by advanced ankylosing spondylitis.

Materials And Methods: We studied 20 patients, 2 female and 18 male, who had 29 THRs, all through a posterior approach. The patient's age at index surgery ranged from 20 to 47 years (mean 35.

Outcomes of Ilizarov ring fixation in recalcitrant infected tibial non-unions - a prospective study.

Background: Infected non-union of long bones is a problem in the developing countries. Persistent infection, deformity, shortening, bone loss, joint stiffness and disability complicate the non-union. Secondary procedures are often required for correction of bone defects and deformity.