Symbol: Body surface localization using laser auxiliary X-ray in orthopaedic implant internal fixation

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Abstract

BACKGROUND:

C-arm X-ray machine is often used in orthopedic surgery to perform the body surface localization. But the repeatedly perspective during the fixation surgery will increase the damage to the human body and prolong operation time.

OBJECTIVE:

To explore a kind of simple practical technology of body surface localization by laser auxiliary X-ray used in the orthopedic surgery.

METHODS:

The radar-shaped red laser was projected in the body surface by self-made simple device to assistant the C-arm machine to perform body surface localization. Sprague Dawley rats and New Zealand white rabbits were used to design animal experiment, three kinds of orthopedic surgeries were simulated. Traditional C- arm machine and the technology of body surface localization by laser auxiliary X-ray was used separately to get position of foreign body in soft tissue, place the distal cross-bolting of fracture intramedullary nail, and place the pedicle screw in spinal surgery. There were 30 cases in every test. The influence of two methods to the operation was analyzed, and the influence of depth and living body to the technology of body surface localization by laser auxiliary X-ray was analyzed.

RESULTS AND CONCLUSION:

Compared with the traditional C-arm machine, the technology of body surface localization by laser auxiliary X-ray could obtain the body surface localization more faster (P < 0.05). But the depth and living body may influence the accuracy of technology of body surface localization by laser auxiliary X-ray (P < 0.05). It suggested that the technology of body surface localization by laser auxiliary X-ray has the advantages of convenient, fast and dynamic which could be greatly convenient for orthopaedic surgery. But various kinds of influential factors should be reduced or eliminated in order to better the advantages of the technology in the operation process.

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