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Reduction and Fixation of Sacroiliac joint Dislocation by the Combined Use of S1 Pedicle Screws and an Iliac Rod
Published in Kai-Uwe Lewandrowski, Donald L. Wise, Debra J. Trantolo, Michael J. Yaszemski, Augustus A. White, Advances in Spinal Fusion, 2003
Kai-Uwe Lewandrowski, Donald L. Wise, Debra J. Trantolo, Michael J. Yaszemski, Augustus A. White
The superior gluteal artery is the most common vessel injured [54]. Care with retraction around the sciatic notch is essential as the vessel will retract into the pelvis if it is transected. This can be difficult to control, and some suggest that anterior pelvic surgery is necessary to achieve control. A better option is to extend the wound distally, dissect the gluteal nuscles from the pelvis, and apply traction to “deliver” the superior gluteal artery into the wound [55]. General ooze from the raw cancellous bone edge is usually easily controlled with thrombostatic sponge or bone wax. Large postoperative blood loss into drain is rare [32-34]. Neurological Injury
Development of polydopamine functionalized porous starch for bleeding control with the assistance of NIR light
Published in Journal of Biomaterials Science, Polymer Edition, 2023
Chuang Liu, Ziyang Liu, Jie Wang, Yanjie Bai, Xun Sun, Qiang Yang, Xinlong Ma, Huan Zhou, Lei Yang
Bleeding control in vascularized bone is challenging due to the irregularly shaped defects and mineral content. Bone wax is widely used to control bone bleeding by acting as a mechanical barrier to seal the wound, along with numerous side effects such as failed bone healing, foreign body reaction, and granuloma growth [21]. Therefore, for orthopedic practice, the applied hemostat deserves both blood coagulation and bone regeneration abilities. In bone regeneration, biomineralization is an important factor to improve the osteo-compatibility and bone-binding ability of biomaterials. The mineralization ability of PS and PS-PDA after SBF soaking was investigated by SEM and XRD for checking surface affinity to biomineralization. As shown in Figure 4a and b, after 7-day incubation PS-PDA presented accelerated biomineralization. This phenomenon was probably caused by the PDA’s high affinity to Ca2+ and PO43- ions. Further the interaction of PDA functional groups with calcium ions at nucleation sites and the continuous deposition of phosphate groups for growing calcium phosphate layer into media [22]. In fact, the presence of more much free catecholamine moieties after polymerization and PDA surface has a negative charge resulting in HA sedimentation [23]. In addition to that Li et al. studied chitosan-grafted porous poly (L-lactic acid) (P-PLLA) nanofibrous membrane to adsorb heavy metal ions(Cu2+) [24]. The paper finds that the adsorption capability of Cu ions was examined with respect to the PDA polymerization times. Kong et al. through introducing salicylic acid groups at the end of PDA to increase the type of adsorption sites, and analysis showed that various functional groups (amino, hydroxyl, and carboxyl groups) were involved in the adsorption of heavy metal ions [25]. The adsorption mechanism included coordination and ion exchange between metal ions and functional groups. In conclusion, the abundant groups on the surface of PDA give it an excellent ability to adsorb ions.