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Cannulated screw

Zhiqiang Wang, Yi Yin, Qingshan Li, Guanjun Sun, Xu Peng, Hua Yin, Yongjie Ye
BACKGROUND: The incidence of early postoperative complications of displaced intracapsular hip fractures is high. The purpose of this study was to compare the early postoperative complications and assess the incidence of femoral neck shortening on using a newly designed proximal femoral cannulated screw locking plate (CSLP) versus multiple cancellous screws (MCS) in the treatment of displaced intracapsular hip fractures in young adults. METHODS: Sixty-eight young adult patients with displaced intracapsular hip fractures were randomly assigned to either the CSLP group or the MCS group and treated routinely by internal fixation with either the CSLP or the MCS...
August 13, 2018: Journal of Orthopaedic Surgery and Research
Mustafa C Kir, Semih Ayanoglu, Haluk Cabuk, Suleyman S Dedeoglu, Yunus Imren, Bulent Karslioglu, Ali Yuce, Hakan Gurbuz
OBJECTIVE: Intra-articular displaced calcaneal fractures are common fractures and are often treated with surgical interventions. Sinüs tarsi approach provides secure access to lateral wall and joint facets. The aim of the study is to compare cannulated screw (CS) fixation and mini-plate (MP) fixation via sinus tarsi approach with Sanders types 2 and 3 fracture of calcaneus. METHODS: Sixty patients with Sanders types 2 and 3 calcaneal fracture underwent surgical intervention were randomly allocated into two groups as group MP fixation and group CS fixation regarding osteosynthesis method for 5-year period...
May 2018: Journal of Orthopaedic Surgery
Shuangshuang Cui, Likun Zhao, Yumin Wang, Qiang Dong, Jianxiong Ma, Ying Wang, Wenjun Zhao, Xinlong Ma
Predictive models permitting personalized prognostication for patients with cannulated screw fixation for the femoral neck fracture before operation are lacking. The objective of this study was to train, test, and cross-validate a Naive Bayes Classifier to predict the occurrence of postoperative osteonecrosis of cannulated screw fixation before the patient underwent the operation. The data for the classifier model were obtained from a ambispective cohort of 120 patients who had undergone closed reduction and cannulated screw fixation from January 2011 to June 2013...
July 27, 2018: Injury
Nabil A Ebraheim, Josh William Vander Maten, Joshua R Delaney, Erik White, Maged Hanna, Jiayong Liu
BACKGROUND: Open reduction and internal fixation (ORIF) methods, primarily plates and screws, remain the standard of treatment for distal fibular fractures. This study evaluates the use of a cannulated intramedullary screw as a minimally invasive treatment method for distal fibular fractures, which has not been reported in the current literature. METHODS: This retrospective study included 45 patients with distal fibular fractures treated with cannulated intramedullary screw fixation...
August 9, 2018: Foot & Ankle Specialist
Alisa Alayan, Ruben Maldonado, Landon Polakof, Atul Saini, Melodie Metzger, Carol Lin, Charles Moon
The traditional technique for patella fracture fixation utilizes prominent hardware. Prominent hardware use, however, results in a high rate of reoperation for symptomatic implant removal. This biomechanical study evaluates the effectiveness of a novel patella fixation technique that minimizes implant prominence. Patellar transverse osteotomies were created in 13 pairs of cadaveric knees. Paired knees were assigned to either standard fixation (SF) using cannulated partially threaded screws and stainless steel wire tension band, or buried fixation (BF) using headless compression screws with a No...
July 2018: American Journal of Orthopedics
Daniele Fabbri, Riccardo Orsini, Antonio Moroni
Stress fractures of the proximal femur are described in athletes and military personnel. In most cases, they are not treated surgically, except when they are at the top of the femoral neck and with cortical involvement. The return to sports is not recommended in patients with hip replacement, especially for the high rate of revision of implants in the younger patients. One of the major complications of hip resurfacing (HR) is the medial fracture of the femoral neck, which usually occurs within 9 weeks after surgery...
June 2018: Joints
Panayiotis D Megaloikonomos, Andreas F Mavrogenis, Georgios N Panagopoulos, Vasilios G Igoumenou, Giannis Giakas, Christos Zampakides, Dimitrios Pasparakis
PURPOSE: To compare longitudinal growth and cam deformity of the proximal femur after treatment for slipped capital femoral epiphysis (SCFE) with one screw versus two smooth pins. METHODS: We studied 43 patients (29 males, 14 females; mean age, 12.1 years; range, 9.5-14 years) with idiopathic unilateral SCFE treated with in situ fixation with one cannulated screw (group A, n = 23) or two smooth pins (group B, n = 20). Anteroposterior and frog-leg radiographs of the pelvis were evaluated for each patient at initial presentation, post-operatively and at physeal closure...
July 23, 2018: International Orthopaedics
Henrique Mansur, Rafael Alvarez, Anderson Freitas, Cesar Barbosa Gonçalves, Max Rogerio Freitas Ramos
Objectives: To analyze the results of biomechanical assays of the fixation of Pauwels type II femoral neck fractures in synthetic bones, using two parallel cannulated screws or three cannulated screws in an inverted pyramid formation. Methods: Ten Brazilian-made synthetic bones were divided into 2 groups. Groups A and B utilized three and two cannulated screws, respectively, after osteotomy in the middle third of the femur, perpendicular to the axis of the femoral neck, simulating a Pauwels type II femoral neck fracture...
May 2018: Acta Ortopedica Brasileira
Ming-Hung Chiang, Chun-Liang Wang, Shau-Huai Fu, Chih-Chien Hung, Rong-Sen Yang
OBJECTIVE: Femoral neck shortening is a common complication after surgical treatment for intracapsular femoral neck fractures. This study investigated whether fully-threaded Headless Compression Screw (FTHCS) can be a more length-stable implant than partially-threaded cannulated screw (PTCS) in reducing femoral neck shortening. METHODS: A total of 50 patients with undisplaced femoral neck fractures (17 treated by internal fixation with three FTHCS, and 33 treated by three PTCS) from 2011 to 2014 were enrolled in this study...
July 20, 2018: Asian Journal of Surgery
Chih-Wei Chang, Yen-Nien Chen, Chun-Ting Li, Yu-Hsuan Chung, Chih-Han Chang, Yao-Te Peng
PURPOSE: Clinical and biomechanical studies have reported that using supportive screws and a wire instead of the common Kirschner wires for modified tension band wiring improves the stability of fractured patellae. However, the effect of screw proximity on the fixation of a fractured patella remains unclear. Therefore a numerical study was conducted to examine the effects of screw proximity on biomechanical responses in a simulated patellar fracture fixed using two parallel cannulated screws and anterior tension band wiring...
May 2018: Journal of Orthopaedic Surgery
Ersin Sensoz, Fatih Mehmet Özkal, Volkan Acar, Ferit Cakir
Iatrogenic subtrochanteric fractures are rarely encountered after cannulated screw fixation of femoral neck fractures; however, when they do occur, there can be several complications. Many orthopedic surgeons have concerns about the potential for iatrogenic subtrochanteric fractures after screw fixation distal to the trochanter minor; therefore, some surgeons are typically reluctant to perform this procedure. This study focused on the risk of an iatrogenic subtrochanteric fracture after treating femoral neck fractures with cannulated screws...
August 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
André Lourenço Pereira, Ângelo Ribeiro Vaz de Faria, Túlio Vinícius de Oliveira Campos, Marco Antônio Percope de Andrade, Guilherme Moreira de Abreu E Silva
Avulsion of the tibial tubercle is an uncommon injury that occurs in the young athlete, resulting from an eccentric contraction of the extensor mechanism with the leg fixed to the ground. Concomitant injuries to the patellar tendon are very rare, with few cases reported in the literature. The authors present a case of a 15-year-old basketball player who suffered an avulsion of the tibial tubercle associated with complete distal rupture of the patellar tendon while training. It was treated with open reduction of the tibial fragment and reconstruction of the patellar tendon with mini-anchors and cannulated screws, as well as hamstring autograft tendon reinforcement...
July 2018: Revista Brasileira de Ortopedia
Alauddin Kochai, Mehmet Türker, Özgür Çiçekli, Uğur Özdemir, Levent Bayram, Ünal Erkorkmaz, Erhan Şükür
OBJECTIVES: This study aims to compare the three most commonly used fixation techniques: tension-band wire fixation, partially threaded cannulated screws, and fully threaded cannulated headless compression screws. PATIENTS AND METHODS: Ninety patients with medial malleolus fractures were included in the study. Patients were divided into three groups. Group A included patients who underwent tension-band wire fixation (n=26), Group B partially threaded cannulated compression screws (n=32), and Group C fully threaded cannulated headless compression screws (n=32)...
August 2018: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
Matthew T Provencher, Zachary S Aman, Christopher M LaPrade, Andrew S Bernhardson, Gilbert Moatshe, Hunter W Storaci, Jorge Chahla, Travis Lee Turnbull, Robert F LaPrade
Background: Metal screws are traditionally used to fix the coracoid process to the glenoid. Despite stable fixation, metal screws have been associated with hardware complications. Therefore, some studies have advocated for suture button fixation during the Latarjet procedure to reduce the complications associated with screw fixation. Purpose: To biomechanically evaluate the ultimate failure load of a cortical button and self-tensioning suture versus metal screws for coracoid graft fixation during the Latarjet procedure...
June 2018: Orthopaedic Journal of Sports Medicine
Horacio Caviglia, Adrian Mejail, Maria Eulalia Landro, Nosratolah Vatani
The objective of surgery for acetabular fractures is to achieve precise reduction to restore joint congruence, fix internal bone fragments, avoid displacement of the fracture and allow rapid rehabilitation.Open reduction and internal fixation is the benchmark method for displaced acetabular fractures, but open reductions can increase morbidity, causing neurovascular injury, blood loss, heterotopic bone formation, infection and poor wound healing.An anatomical reduction with a gap of 2 mm or less is a predictor of good joint function and reduced risk of post-traumatic osteoarthritis...
May 2018: EFORT Open Reviews
Jacob T Gibby, Samuel A Swenson, Steve Cvetko, Raj Rao, Ramin Javan
PURPOSE: Augmented reality has potential to enhance surgical navigation and visualization. We determined whether head-mounted display augmented reality (HMD-AR) with superimposed computed tomography (CT) data could allow the wearer to percutaneously guide pedicle screw placement in an opaque lumbar model with no real-time fluoroscopic guidance. METHODS: CT imaging was obtained of a phantom composed of L1-L3 Sawbones vertebrae in opaque silicone. Preprocedural planning was performed by creating virtual trajectories of appropriate angle and depth for ideal approach into the pedicle, and these data were integrated into the Microsoft HoloLens using the Novarad OpenSight application allowing the user to view the virtual trajectory guides and CT images superimposed on the phantom in two and three dimensions...
June 22, 2018: International Journal of Computer Assisted Radiology and Surgery
Guanghui Li, Dadi Jin, Xianfang Shao, Zhijun Liu, Jianhui Duan, Raji Akileh, Shousong Cao, Tuoen Liu
OBJECTIVES: Surgical treatment of femoral neck fracture in young adults is clinically challenging due to the high incidence of avascular necrosis of femoral head and fracture nonunion. The objective of this study is to evaluate the effectiveness of cannulated screws with deep circumflex iliac artery bone grafting (DCIABG) by comparing to the routinely used method in the treatment of femoral neck fracture in young adults. METHODS: From March 2006 to December 2012, a total of 185 patients with femoral neck fracture were admitted to the hospital for internal fixation surgery, 103 patients (61 males and 42 females, mean age of 39...
June 12, 2018: Injury
Tien Yeoh, Efthymios Iliopoulos, Alex Trompeter
The most commonly accepted system of classification for tibia plateau fractures is that of Schatzker. Increasingly, both high energy injuries and atypical osteoporotic fragility failures have led to more complex, unusual and previously undescribed fracture patterns being recognized. We present a case of a patient with a previously unreported pattern of tibia plateau fracture and knee dislocation. We highlight the challenges confronted and present the management and the outcomes of his injury. A 28-year old male motorcyclist was involved in a head on collision with a truck and was transferred by helicopter to our level 1 major trauma centre emergency department...
May 24, 2018: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
Zhirong Wang, Wen Zhang, Hao Xu, Aiqing Lu, Huilin Yang, Zong-Ping Luo
BACKGROUND: Cannulating fenestrated pedicle screws are effective for fixating osteoporotic vertebrae. However, a major limitation is the excessive pressure required to inject a sufficient amount of cement into the vertebral body through the narrow hole of a pedicle screw. We have recently proposed a new cannulating fenestrated pedicle screw with a large hole diameter and a matched inner pin for screw-strength maintenance. Our purpose was to determine whether the new screw can significantly reduce bone-cement perfusion pressure during cement augmentation, METHODS: Two different methods were used to examine perfusion pressure...
August 2018: Clinical Biomechanics
Aakash Mugalur
Equalizing limb length is of paramount importance for optimal outcome in patients undergoing hip arthroplasty(HA). Numerous techniques have been described for avoiding limb length discrepancy (LLD) in patients undergoing HA. However their applicability in patients undergoing HA for neck of femur(NOF) fractures remains questionable due to dissociation between the femur and the head. I hereby describe a novel yet simple technique for better utilization of already established techniques to avoid LLD in NOF fractures undergoing HA...
June 2018: Journal of Clinical Orthopaedics and Trauma
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