A simple laser guide to reduce the screening time during the insertion of dynamic hip screws

Conn, Kevin S.; Hallett, J.P.

doi:10.1016/s0020-1383(98)00130-2

Cited by 13 publications

(11 citation statements)

References 6 publications

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“…The difference between our study and that of Conn and Hallet 16 may be explained in that all their procedures were done by a single surgeon, they were all the same type of operation and a mark was made on the skin at the beginning of the case so any further screening was minimized. This technique of marking the skin to correspond to the centre of the anatomical region may improve the efficiency of the device and may be considered in any future study.…”

Section: Discussionmentioning

confidence: 93%

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Radiation exposure using laser aiming guide in orthopaedic procedures

Harris

Walker

Trieu

2002

ANZ Journal of Surgery

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Section: Discussionmentioning

confidence: 93%

“…Medical Systems, Rydalmere, NSW, Australia) has been developed to minimize exposure time. A study by Conn and Hallett showed it to be effective in reducing screening time and radiation dose by up to 40% in hip fracture fixation 16 …”

Section: Introductionmentioning

confidence: 99%

Radiation exposure using laser aiming guide in orthopaedic procedures

Harris

Walker

Trieu

2002

ANZ Journal of Surgery

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“…In a study using an intramedullary nail distal locking model, Williams et al [16] found that the number of shots taken is reduced significantly when using C-arm as the primary surgeon and radiology technicians speak the same terminology in the operating room. Conn and Hallett [6] demonstrated that a simple laser pointer in a fluoroscope provides a 50% reduction in screening time in patients undergoing surgery for hip fracture. In their study, the best location for imaging was marked with a pen, and the number of shots was reduced by matching the point with the developed laser.…”

Section: Discussionmentioning

confidence: 99%

“…The use of additional apparatus, such as laser aiming devices (LADs), has the potential to reduce the total fluoroscopy time by helping to center the desired surgical area on the image with fewer shots. [5,6] While there are several LADs available on the market, their brand-and model-specific compatibility and development limit their use among different systems. In addition, many institutions working with a tight budget may not have access to them due to their high cost.…”

mentioning

confidence: 99%

The effect of a new universal laser aiming device in C-arm fluoroscopy on the technician’s accuracy

Beyaz

Kurtuldu

2020

Jt Dis Relat Surg

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This study aims to introduce a new low-cost universal laser aiming device (LAD) that can be used in existing C-arm fluoroscopy devices, independent of brand and model, and to determine whether this new universal LAD improves technician accuracy in locating the desired region at the midpoint of the fluoroscopic image. Materials and methods: A low-priced universal LAD that is compatible with existing 12-inch C-arm fluoroscopy devices was designed. Eight radiology technicians with varied levels of experience in C-arm fluoroscopy participated in the study. A 12 mm cortical screw with a diameter of 3.5 mm was placed on proximal, diaphyseal, and distal points of femur, tibia, and humerus bones in the anteroposterior plane on L3 vertebrae and the left pubis arm in the pelvis bone model. Technicians were asked to align each screw in the image center 10 times from a distance of 30 cm in the anterolateral plane, first without the LAD and then with the LAD. The distance of the screw head to the center point was measured from the 3,520 images with the help of medical viewer software based on the X-and Y-axis. Results: Each fluoroscopic image was divided into 48 equal parts and the length of a part was taken as one unit for distance measurements. The compliance between technicians without the LAD was 0.347 (95% confidence interval [CI]: 0.208-0.47, p=0.001) and with the LAD was 0.687 (95% CI: 0.621-0.741, p=0.001). The distance between the screw head and the center of the image without the LAD was 19.0±9.8 for technicians with more than 10 years of experience and 28.0±12.9 for those with less than 10 years of experience. This difference was statistically significant (p=0.001). When the LAD was used, the difference between the less experienced (3.1±1.5) and more experienced (3.3±2.0) technicians was statistically reduced, along with the distance (p=0.033). Conclusion: The use of the LAD with C-arm fluoroscopy appears to be successful in helping technicians capture the desired point in the center of the fluoroscopic image. The use of the LAD reduces the experience gap between technicians.

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“…Indeed, use of a simple, inexpensive laser pointer attached to an x-ray image intensifier in a previous study significantly reduced the screening time by 50%. 7 The authors, Conn and Hallett, retrospectively reviewed, as the control group, 26 consecutive dynamic hip screw operations performed by an experienced registrar and prospectively studied 25 of the same operations performed by the same surgeon using a simple laser pointer. 7 In both groups two marks were made on the skin at the beginning of the case so that any further screening was minimized.…”

Section: Discussionmentioning

confidence: 99%