Temperature change during orthopedic drilling procedures: An experimental surgical internal fixation simulation study

Background

The purpose of this experimental surgical internal fixation simulation study was to analyze four drilling parameters as a whole, use a thermal camera to observe the temperature, and then determine how these parameters were related to temperature.

Methods

Four separate experimental models were examined in terms of the impacts of four drilling parameters, defined as the drill, drill bit diameter, drill bit design, and the material drilled during drilling procedures, on temperature.

Results

The temperature was observed to be affected by the drill used, a change in the drill bit diameter, drill bit design, and the characteristics of the material drilled (p < 0.041, p < 0.001, p < 0.001, and p < 0.001, respectively). The speeds of the four drills used were measured as 558 rpm, 1385 rpm, 930 rpm, and 1490 rpm.

Conclusion

The findings of the present research demonstrated that the four parameters investigated were related to the temperature formed during drilling. Of the parameters examined, the parameter which increased the temperature the most was a change in the drill bit diameter.

An investigation of the effect of acrylamide on fracture healing in rats

BACKGROUND

The aim of this study was to investigate the effects of acrylamide (AA) on fracture healing histologically, biochemically, and radiologically in a rat femur fracture model.

METHODS

Scanning electron microscopy (SEM) imaging and Fourier transform infrared spectroscopy (FTIR), and UV (ultraviolet)-Vis (visible) spectrophotometer examination were performed for acrylamide characterization. In this study, after the femur fracture model was created, the groups were formed to include eight rats in each group (G) as follows: G1: 15th-day control, G2: 15th-day AA, G3: 30th-day control, G4: 30th-day AA. In G2 and G4, 5mg/kg acrylamide was administered 3 times a week by gastric gavage. The fracture was evaluated radiologically according to Lane-Sandhu scoring and histologically according to Huo scoring. The weight changes of the rats were recorded. Albumin, total protein, cholesterol, HDL, LDL, triglyceride, ALP, LDH, vit. D, PTH, Ca, P, WBC, Hb, Plt values were examined in the blood samples. The data were analyzed using the SPSS program.

RESULTS

The characterization properties of acrylamide were confirmed. No significant weight change was observed in the rats during the study. When blood values were compared, a statistically significant difference was determined between albumin, total protein, phosphorus, white blood cell (WBC), and hemoglobin groups (p=0.41, p=0.00, p=0.003, p=0.019, and p=0,017, respectively). According to the histological score comparisons, G3 was significantly different from G1, G2, and G4 (p<0.05), and G4 was significantly different from G1 and G2 (p<0.05). According to Lane-Sandhu scoring, there was a significant difference between G2 and G3 and G4 (p: 0.0, p: 0.034), G1 and G3 (p: 0.001), respectively.

CONCLUSION

AA adversely affects fracture healing even at low doses, as in the present study. According to the results of this study, the authors recommend a diet poor in acrylamide during fracture treatment. Therefore, further human studies are required to find out the complex effect of AA on bone healing and the body.

Investigating the risk factors that affect mortality after cemented hemiarthroplasty in advanced age patients

Background & aims

The number of hip fracture surgeries exhibit an increasing trend due to the aging of the world's population and it is expected to become a serious public health problem in the future. This study aimed to investigate the relationship between mortality and morbidity in patients aged 65 years or older who underwent partial hip prosthesis due to hip fracture.

Methods

Four-hundred and forty-three patients aged 65 and above who underwent partial hip prosthesis for fractured hips between 2007 and 2014 were retrospectively investigated. The age before surgery, gender, type of fracture, additional diseases, ASA scores of the patients and time to mortality were investigated in addition to the factors that affect mortality.

Results

Of the 443 patients in the study, 167 were males and 276 were females, with an average age of 80.5 ± 7.2 and 81.1 ± 7.0 years, respectively. One hundred and sixty-two (36.57%) of these patients died within the first year. When the patients were investigated according to age groups, there was a significant relationship between mortality after surgery and patients aged 80 years and above. No statistically significant relationship was found between the time to surgery and mortality. When compared in terms of ASA scores, it was concluded mortality in ASA 3 and 4 groups was significantly higher than ASA 1 and 2 groups (p < 0.001). When hospital stay and one-year mortality rates were compared, it was seen that the length of hospital stay of the patients who died in the first year was significantly higher.

Conclusions

In patients who underwent partial hip replacement after hip fracture, there was a significant relationship between mortality, long hospital stay, patients with an ASA score of 3-4, and patients aged 80 years and above, whereas no relationship was detected with time to surgery.