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femor interlocking

Zhentao Zhou, Xiaozhong Zhou, Bingchen Shan, Haibin Zhou, Zhengfeng Lu, Qirong Dong
OBJECTIVE: To describe the applications and effects of electromagnetic navigation (EN) technology in distal locking for the treatment of long diaphyseal fracture (LDF) with interlocking intramedullary nailing (IIN). STUDY DESIGN: An interventional study. PLACE AND DURATION OF STUDY: The Second Affiliated Hospital of Soochow University, China, from March 2013 to July 2014. METHODOLOGY: Patients who underwent IIN-LDF were selected...
December 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
H-P Sobotta, T Gösling
There are a number of case reports about women undergoing long-term bisphosphonate therapy who have suffered an atypical subtrochanteric or femoral shaft fracture due to an inadequate trauma.The present case reports on a patient who underwent a subtrochanteric femur fracture with the inserted AO femur interlocking nail.
November 3, 2016: Der Unfallchirurg
Josh Vaughn, Heather Gotha, Eric Cohen, Amanda J Fantry, Ross J Feller, Jake Van Meter, Roman Hayda, Christopher T Born
Femoral and tibial shaft fractures are common injuries in the United States. Since their introduction, reamed intramedullary nails have become the treatment of choice for most of these fractures. However, delayed union and nonunion can complicate treatment in up to 10% of patients. Removal of interlocking screws, or dynamization, can promote fracture healing in cases of delayed union or nonunion. The efficacy of nail dynamization has been reported to range from 19% to 82%. This study was conducted to evaluate the efficacy of dynamization, identify the factors associated with its success or failure, and analyze the cost compared with exchange nailing...
November 1, 2016: Orthopedics
Han Kook Yoon, Hyun Cheol Oh, Junyoung Park, Choidog Oyunbat, Taehwan Kim
Recently, we experienced a case where the diagnosis and management of a deep femoral artery rupture was delayed. This vascular complication occurred during the insertion of a distal interlocking screw of a proximal femoral nail for the fixation of an intertrochanteric femur fracture. A 79-year-old male patient was diagnosed with a right intertrochanteric fracture after a fall. We fixed the fracture with a proximal femoral nail (Zimmer® Natural Nail™ System). One day after the procedure, the patient complained of pain and swelling on the anteromedial side of his middle thigh followed by hypotension, anemia and prolonged thigh swelling...
March 2016: Hip & Pelvis
Yasser Assaghir
: The piriformis fossa is the ideal portal of entry for antegrade interlocking nailing. Localizing this portal can be difficult and its eccentricity leads to complications. This prospective comparative study was designed to compare an innovative way to obtain the ideal portal from inside the medullary canal in cases of plate failure and compare it to the classic antegrade portal. It included 41 cases (19 antegrade and 22 retrograde). The retrograde portal was significantly better in terms of entry time, radiation time, blood-loss, and wound length...
July 20, 2016: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
Hidemi Kawaji, Takuya Uematsu, Ryosuke Oba, Yoshihiko Satake, Naoya Hoshikawa, Shinro Takai
INTRODUCTION: We usually use short femoral nails for the treatment of trochanteric fracture of the femur. In this retrospective study, we investigated and compared the clinical results of the conventional intramedullary hip screw (IMHS) and the Asian IMHS, which is a redesigned version of the former. MATERIALS AND METHODS: The subjects were 42 patients; 21 treated with the Asian IMHS and 21 were treated with the conventional IMHS. From the clinical records, we retrospectively investigated the patients' age, sex, in-hospital waiting period for operation, operating time, intraoperative blood loss, walking ability before fracture and at discharge, and complication pertaining to the operation...
2016: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
Raju Vaishya, Amit Kumar Agarwal, Nishint Gupta, Vipul Vijay
OBJECTIVE: Non-union after intramedullary nail fixation of femur shaft fractures is although infrequent but a challenging condition to treat. The treatment options available to deal with such a situation include exchange nailing, removal of nail and re-osteosynthesis with plating, or Ilizarov fixation. We believe that rotational instability, in the presence of a nail, is one of the main reasons for most of the non-union. We present our experience of plate augmentation leaving the nail in situ for non-union of femoral shaft fracture...
December 2016: Journal of Orthopaedics
Michael Brückner, Martin Unger, Markus Spies
OBJECTIVE: To describe early clinical experience with a newly designed interlocking nail system (Targon(®) Vet) in diaphyseal fractures in cats and small dogs. STUDY DESIGN: Retrospective case series. ANIMALS: Client-owned cats (n=49) and dogs (n=8). METHODS: Fifty-seven consecutive cases (49 cats, 8 dogs) with 60 long bone fractures were included in the study. Follow-up radiographs were scheduled at 4 and 8 weeks and again 6 months postoperatively...
August 2016: Veterinary Surgery: VS
Chun-Lin Zhang, Guo-Qi Shen, Kun-Peng Zhu, Dong-Xu Liu
BACKGROUND: The integrity of bone-cement interface is very important for the stabilization and long-term sustain of cemented prosthesis. Variations in the bone-cement interface morphology may affect the mechanical response of the shape-closed interlock. METHODS: Self-developed new reamer was used to process fresh pig reamed femoral canal, creating cortical grooves in the canal wall of experimental group. The biomechanical effects of varying the morphology with grooves of the bone-cement interface were investigated using finite element analysis (FEA) and validated using companion experimental data...
July 1, 2016: Journal of Orthopaedic Surgery and Research
Peter M Stevens, Christian J Gaffney, Heather Fillerup
The purpose is to describe the technique and report the results and complications of percutaneous femoral rotational osteotomy, secured with a trochanteric-entry, locked intramedullary rod, in adolescents with femoral anteversion. Our series comprised an IRB approved, retrospective, consecutive series of 85 osteotomies (57 patients), followed to implant removal. The average age at surgery was 13.3 years (range 8.8-18.3) with a female-to-male ratio of 2.8:1. The minimum follow-up was 2 years. Eighty-three osteotomies healed primarily...
August 2016: Strategies in Trauma and Limb Reconstruction
Andrew Young, Adam Mirarchi
This report describes two cases of long bone non-union associated with the use of recombinant human bone morphogenetic protein-2 (rhBMP-2) and is the first of its kind. The first case describes a 25-year-old male who sustained a left diaphyseal femoral shaft fracture initially treated with operative fixation using an intramedullary nail, which subsequently loosened distally and was treated with exchange nailing and rhBMP-2 application. This patient developed acute local soft tissue inflammation post-operatively...
July 2015: Journal of Orthopaedic Case Reports
Yinwen Liu, Yuxin Zheng, Ziliang Shen, Shuqiang Wang, Xiaoen Wei, Xinfeng Gu, Hongsheng Zhan, Yong Kuang
PURPOSE: The purpose of this study was to describe and evaluate the clinical application of the technique of interlocking intramedullary (IM) nailing via an entry point at the tip of greater trochanter using a specially designed femoral hollow trephine to stabilize diaphyseal fractures of the femur. METHODS: From February 2010 to April 2014, 35 consecutive patients with femoral shaft fractures were treated by the therapy of bone grafting from trochanter region with interlocking IM nail...
May 28, 2016: International Orthopaedics
Yong-Gang Ma, Ge-Liang Hu, Wei Hu, Fan Liang
PURPOSE: To explore the possible surgical factors related with nonunion in femoral shaft fracture following intramedullary nailing. METHODS: We retrospectively analyzed totally 425 patients with femoral shaft fracture in level I urban trauma center, including 254 males and 171 females, with an average age of 37.6 (ranging from 21 to 56) years old. The inclusion criteria included: (1) traumatically closed fracture of femoral shaft, with pre- operative films showing non-comminuted fracture, such as transverse fracture, oblique fracture or spiral fracture; (2) closed reduction and fixation with interlocking intramedullary nail at 3-7 days after trauma; (3) complete follow-up data available...
April 1, 2016: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
Alexander A White, Meghan R Kubacki, Jason Samona, Paul Telehowski, Patrick J Atkinson
Studies have shown that titanium implants can be challenging to explant due to the material's excellent biocompatibility and resulting osseointegration. Clinically, titanium alloy nail interlocking screws may require removal to dynamize a construct or revise the nail due to nonunion, infection, pain, or periprosthetic fracture. This study was designed to determine what variables influence the removal torque for titanium alloy interlocking screws. An intramedullary nail with four interlocking screws was used to stabilize a 1-cm segmental femoral defect in a canine model for 16 weeks...
June 2016: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
Jun-wei Jin, Gang Zhao
OBJECTIVE: To analyze rationality of internal fixation with original fixation in the second operation for femoral nonunion. METHODS: A retrospective study was conducted to analyze the clinical data of 19 femoral nonunion patients treated by internal fixation with original fixation in the second operation since January 2009 to July 2014, including 14 males and 5 females with an average age of (43.63 ± 3.95) years old ranging from 18 and 75 years old. The original fixations involved plate fixation in 11 cases and interlocking intramedullary nail in 8 cases (including 3 cases of retrograde interlocking intramedullary nails)...
January 2016: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Taj Mohammad, Alamzeb Khan, Alamzeb Sawati, Ashfaq Ahmed, Abdus Saboor Awan, Abdus Saboor, Siddique
BACKGROUND: Femoral shaft fracture is one of the common fractures seen in accident and emergency department of our hospital. Violent forces are required to break this and strongest of human bones. There are various treatment modalities for femoral shaft fractures in adults like traction, brace, platting, intramedullary nail (IMN), external fixators and inter locking nails. The study was done with an objective to evaluate the results of closed reamed interlocking nail in fractures of shaft of femur...
October 2015: Journal of Ayub Medical College, Abbottabad: JAMC
Tatsunori Kataoka, Norishige Iizawa, Shinro Takai
Superior dislocation of the patella without patellar ligament injury is an extremely rare condition. A review of the English-language literature found only 23 reported cases. In addition, the primary factor for dislocation in most of these cases was considered to be osteophytes in the inferior pole of the patella and the anterior surface of the femoral condyle; only 1 case had no osteophytes. We treated a 19-year-old woman who sustained a painful locking of the left knee after colliding with a friend. Plain radiography and computed tomography showed superior-lateral dislocation of the patella and an interlocking between notches in the inferior pole of the patella and the anterior surface of the femoral condyle...
2016: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
Ahmet A Karaarslan, Ahmet Karakaşli, Hakan Aycan, Berivan Çeçen, Didem Venüs Yildiz, Erhan Sesli
BACKGROUND: Proximal locking screw deformation and screw fracture is a frequently seen problem for femur interlocking nailing that affects fracture healing. We realized that there is lack of literature for the right level for the proximal locking screw. We investigated the difference of locking screw bending resistance between the application of screws on different proximal femoral levels. MATERIALS AND METHODS: We used a total of 80 proximal locking screws for eight groups, 10 screws for each group...
January 2016: Indian Journal of Orthopaedics
Bogdan Deleanu, Radu Prejbeanu, Dinu Vermesan, Lucian Honcea, Mihail Lazar Mioc, Eleftherios Tsiridis, Vlad Predescu
INTRODUCTION: The avascular necrosis of the femoral head represents the death of bone tissue due to the lack of blood supply. The disease has a progressive evolution and left untreated leads to femoral head collapse and severe arthritis. CASE PRESENTATION: We present a case of a pertrochanteric fracture which has been successfully operated with a dynamic interlocking trochanteric gamma nail on the right hip. At 2 years after surgery the patient developed an incipient avascular necrosis of the femoral head...
February 2016: Annals of Medicine and Surgery
Ahmet Adnan Karaarslan, Hakan Aycan, Yaman Örgen, Ahmet Karakaşli, Fatih Ertem, Erhan Sesli
OBJECTIVE: One of the problems for interlocking nailing of the femur is interfragment rotation motion, affecting fracture healing. The nails with single distal locking screw are advantageous for decreasing operation time and radiation exposure. We investigated which single distal screw nail is the best for interfragment rotational stability. METHODS: We used a total of 30 composite femurs, ten for each group. We determined interfragment rotational displacement of composite femurs with three types of single distal screw nails (10 interlocking nails, 10 compression nails and 10 Mehmet anti-rotation nails compressed by tube) at 6-Nm external- 6 Nm internal and 10 Nm extern- 6 Nm internal torques, which imitating respectively the level walking and descending stairs, using an axial distraction testing machine and a custom designed rotation apparatus...
2016: Acta Orthopaedica et Traumatologica Turcica
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