RESUMEN
Background@#The purpose of the present study was to determine how long superior screws alone or in combination with posterior placement of metaglene screws protruding and penetrating into the scapular spine in reverse total shoulder arthroplasty affect the strength of thescapular spine in a fresh cadaveric scapular model. @*Methods@#Seven fresh cadaver scapulas were allocated to the control group (short posterior and superior screws) and seven scapulars to thestudy group (spine base fixation with a four long screws, three with both long superior and long posterior screws). @*Results@#The failure load was lower in the spine fixation group (long screw, 869 N vs. short screw, 1,123 N); however, this difference did notreach statistical significance (p>0.05). All outside-in long superior or superior plus posterior screws failed due to scapular spine base fracture; failures in the short screw group were due to acromion fracture. An additional posterior outside-in screw failed to significantly decrease the failure load of the acromion spine. @*Conclusions@#The present study highlights the significance of preventing a cortical breach or an outside-in configuration when a superioror posterior screw is inserted into the scapular spine base.
RESUMEN
Background@#The purpose of the present study was to determine how long superior screws alone or in combination with posterior placement of metaglene screws protruding and penetrating into the scapular spine in reverse total shoulder arthroplasty affect the strength of thescapular spine in a fresh cadaveric scapular model. @*Methods@#Seven fresh cadaver scapulas were allocated to the control group (short posterior and superior screws) and seven scapulars to thestudy group (spine base fixation with a four long screws, three with both long superior and long posterior screws). @*Results@#The failure load was lower in the spine fixation group (long screw, 869 N vs. short screw, 1,123 N); however, this difference did notreach statistical significance (p>0.05). All outside-in long superior or superior plus posterior screws failed due to scapular spine base fracture; failures in the short screw group were due to acromion fracture. An additional posterior outside-in screw failed to significantly decrease the failure load of the acromion spine. @*Conclusions@#The present study highlights the significance of preventing a cortical breach or an outside-in configuration when a superioror posterior screw is inserted into the scapular spine base.
RESUMEN
The effects of perioperative blood transfusion on renal functions have been studied in various studies. In this study, we investigated the effects of blood transfusion on postoperative kidney functions in patients who underwent orthopaedic surgeries. Total 136 patients who were operated for several orthopedic pathologies between June 2013 and December 2014 were evaluated. The patients were divided into two groups according to the amounts of blood transfusion. Ninety five patients [69.8%] who were transfused less than 3 units were included in Group 1 and 41 patients [30.2%] who received 3 and more units of blood were included in Group 2. There were no statistical difference between the two groups in terms of preoperative gender, hypertension, diabetes mellitus, chronical renal failure and smoking habbits [P>0.05]. No statistical differences between the groups were seen in terms of postoperative hospital stay, pulmonary and other complications as well as mortality [P>0.05]. When the two groups were compared for blood parameters showing postoperative renal and other system functions, no statistical differences were detected [P>0.05]. Blood transfusion does not have negative effects on postoperative BUN and creatinine levels in patients operated for orthopaedic pathologies