In spite of recent development in fixation technique we still have lots of complication including avascular necrosis of femoral head. For many years, orthopaedic surgeon have been searching for a simple, safe, accurate and reliable clinical test to asses the vascular status of the femoral head. In early detection of viability of the femoral head, nothing is more certain than bone scan at the moment. Bone scan can detect or predict the viability of the femoral head. Subramanian and McAfee introduced 99mTc-Sn-polyphosphate as a bone seeking agents. We applied serial bone scan in 19 cases of femur neck fractures from 1982 to 1985 at the department of orthopaedic surgery, National Medical Center. The results were as follows; 1. The uptake ratio of displaced and undisplaced group based on preoperative radiography was 1.ZO, 1.46, 1.52, 1.55, and 0.63, 1.23, 1.81, 1.58 in average in postoperative bone scan interval 1–2 wks, 3 months, 6 months, 12 months. The bone scan uptake ratio was lower in the former than the latter, but after 3 months, there was no remarkable difference between them. 2. At the time of 1 to 2 weeks, 3 months, 6 months and 12 months, uneventful group was 0.74, 1.27, 1.72, 1.62 and avascular necrosis group 0.13, 0.18, 0.30, 0.67 in the uptake ratio. In 2 cases of avascular necrosis, the uptake ratio was markedly decreased. 3. There was no difference between the group operated within 48 hour after injury and the group delayed later.
Equidae ; Femoral Neck Fractures ; Femur Neck ; Femur ; Head ; Necrosis ; Radiography

Femoral neck fractures are associated with femoral shaft fractures in 1% to 9% of cases. Undisplaced neck fractures are susceptible to displacement during shaft nailing. We report the case of a 57-year-old male patient in whom we performed standard intramedullary nailing for a femoral shaft fracture. In doing so, we identified a vertical radiolucent line at the femoral neck, which was thought to be further displacement of a hidden silent fracture or an iatrogenic fracture that developed during nail insertion. Consequently, we decided to switch to reconstructive femoral nailing. Postoperative hip imaging failed to show the femoral neck fracture that we saw in the operating room. Here, we discuss the aforementioned case and review the literature concerning this artifact.
*Artifacts ; Femoral Fractures/diagnosis/*radiography/surgery ; Femoral Neck Fractures/diagnosis/*radiography/surgery ; Fracture Fixation, Intramedullary ; Humans ; Male ; Middle Aged

We performed endoscopic bone grafting for eight patients of delayed union and nonunion which developed after femoral and humeral shaft fractures. The mean interval from initial intervention to endoscopic bone grafting was 7.3 months. Six patients of delayed union and nonunion healed at 4.1 months on average. Two patients had unsatisfactory healing and eventually underwent non-endoscopic revisional surgery. There was no intraoperative on postoperative complication. Endoscopic bone grafting can be a less invasive alternative, obtaining rapid bone union in cases of compromised healing of the diaphyseal fracture.
Adult ; Bone Transplantation* ; Case Report ; Endoscopy* ; Female ; Femoral Fractures/surgery* ; Femoral Fractures/radiography ; Femoral Fractures/physiopathology ; Human ; Humeral Fractures/surgery* ; Humeral Fractures/radiography ; Humeral Fractures/physiopathology ; Male ; Middle Age ; Time Factors ; Wound Healing*

OBJECTIVES: We aim to elucidate the clinical outcomes of bisphosphonate-associated atypical femoral fracture and the clinical results depending on the bisphosphonate therapy period. METHODS: Twenty cases involving 15 patients who had been diagnosed with atypical femoral facture between 2004 and 2014 and who had been followed up for at least 12 months were retrospectively analyzed. The control group was composed of 15 typical femoral facture patients. We used plain radiography and physical examinations to determine the period of time required for fracture healing as well as complication occurrence. We investigated the bisphosphonate administration status and duration and the names of its components, bilateral fracture occurrence status, the period of time required for bone union, and reoperation or bone graft status due to nonunion. RESULTS: Revision surgery involving a bone graft was performed due to nonunion in 1 out of 15 cases. Except in one revision case, the duration of the union was 11.9 months on average in 14 cases of atypical fracture patients, and 4.3 months on average in the control group. This difference was statistically significant (p < 0.05). The bisphosphonate administration duration was positively correlated with the union period (p < 0.05). In contrast, there was no statistically significant correlation between the bisphosphonate administration duration and the incidence of bilateral atypical fractures (p > 0.05). CONCLUSIONS: Atypical femoral fractures required more time for bone union than typical ones and prolonged bisphosphonate administration led to a longer period of time required for bone union.
Femoral Fractures ; Femur* ; Fracture Healing ; Humans ; Incidence ; Physical Examination ; Radiography ; Reoperation ; Retrospective Studies ; Transplants

PURPOSE: To investigate the causes of nonunion and its appropriate modality of treatment by a retrospective review of our cases. MATERIALS AND METHODS: Four cases of established nonunion of the femur neck referred from other hospitals were included and the initial fracture was Delbet type 2 in all cases. Three cases were mobile with marked bony resorption at the nonunion site. RESULTS: The causes of nonunion include insufficient fixation which did not cross physis in the state of inaccurate reduction, and also insufficient duration of cast immobilization, and early weight bearing. All cases of nonunion were successfully treated by adequate amount of autogenous cancellous bone graft with minimal pin fixation across physeal plate, and followed by sufficient cast immobilization for more than 12 weeks, reinforced by instituting long-term protective weight bearing for at least 6 months until evidence of union on plain roentgenography is shown. CONCLUSIONS: Based on our experience, we propose the followings instead of subtrochanteric valgus osteotomy in the treatment of mobile, osteopenic nonunion of the femur neck in children. The most important considerations are adequate amount of autogenous cancellous bone graft, and prolonged protective weight bearing until bony union is assured as well as less bulky internal fixation crossing the physis.
Child* ; Femoral Neck Fractures* ; Femur Neck* ; Femur* ; Humans ; Immobilization ; Osteotomy ; Radiography ; Retrospective Studies ; Transplants ; Weight-Bearing

BACKGROUNDComputer-assisted procedures have recently been introduced for navigated femoral neck screw placement. Currently there is little information available regarding accuracy and efficiency of the different navigated procedures. The aim of this study was to compare two fluoroscopic navigation tracking technologies, a novel bi-planar robot navigation and standardized optoelectronic navigation, versus standard freehand fluoroscopic insertion in a Synbone hip model.

METHODSEighteen fixed Synbone hip models were divided into 3 groups. C-arm navigated cannulated screws (AO-ASIF, diameter 7.3 mm) were inserted using freehand targeting (control group). A novel bi-planar robot system (TINAV, GD2000) and an optoelectronic system (Stryker OTS Navigation System) were used for the navigated procedures (robot group and optoelectronic group). Accuracy was measured using radiographic evaluation including the measurement of screw parallelism and decentralization, and joint penetration. To evaluate the efficiency, the number of guidewire passes, operative time and fluoroscopic images taken were noted.

RESULTSThe two computer-assisted systems provided significantly improved accuracy compared to the freehand technique. Each of the parameters, including guidewire passes and number of fluoroscopy images, was significantly lower when using the computer-assisted systems than for freehand-unguided insertion (P <0.05), but operative time was significantly shorter when using freehand-unguided insertion than for the computer-assisted systems (P <0.05). Accuracy, operative time and number of fluoroscopy images taken were similar among the two navigated groups (P >0.05), but guidewire passes in the robot group were significantly less than in the optoelectronic group (P <0.05).

CONCLUSIONSBoth bi-planar robot navigation and optoelectronic navigation were similarly accurate and have the potential to improve accuracy and reduce radiation for freehand fluoroscopic targeting for insertion of cannulated screws in femoral neck fractures. Guidewire passes in the robot group were significantly less than in the optoelectronic group. However, both navigated procedures were associated with time-consuming registration and high rates of failed matching procedures.

Bone Screws ; Femoral Neck Fractures ; surgery ; Hip ; diagnostic imaging ; surgery ; Humans ; Radiography ; Surgery, Computer-Assisted ; methods

Complex segmental femoral fractures are usually not amenable to closed reduction. The purpose of this study was to evaluate a series of patients who had undergone four pins assisted reduction and intramedullary nail fixation to determine the therapeutic effect of this closed reduction technique. Between December 2010 and January 2013, 15 consecutive patients with segmental femoral fractures were treated with four pins assisted reduction at our hospital. The patient was placed in a supine position on a radiolucent fracture table and a gentle traction was attempted on the limb. Usually, the proximal fracture segment exhibited the typical deformity of flexion, external rotation, and abduction, the middle segment exhibited adduction and distal fracture segment exhibited flexion. Four Schanz pins were placed percutaneously to fix one cortex and did not penetrate into the medullary cavity, and the "T" sharp handles were fixed on the Schanz pins. The fragments were then reduced by reversing the deforming forces for segmental fractures by two assistants. And then, the reduction could be easily achieved and intramedullary nail fixation was performed. Radiographs were evaluated for the quality of the reduction and fracture union. Closed reduction was achieved in all patients using the four pins technology. All 15 fractures united uneventfully. No patient had a rotational malunion or limb length discrepancy at the time of the last follow-up. Thirteen of the fifteen (86.7%) patients had anatomic reduction and two of them (13.3%) had minor varus alignment of 3° and 5°. Knee stiffness was observed in 2 patients and no implant failure was observed. Surgical treatment of complex segmental femoral fractures with four pins assisted reduction and intramedullary nail fixation techniques can result in excellent reductions and a high union rate.
Adult ; Bone Nails ; Femoral Fractures ; diagnostic imaging ; surgery ; Humans ; Male ; Middle Aged ; Radiography

A 19-year-old man had an accidental fall from the 2nd floor and sustained multiple injuries. On radiological evaluation, the patient had symmetrical quadruple limb involvement with bilateral humerus shaft, bilateral olecranon, bilateral femur shaft, and bilateral patella fractures. The patient was actively managed using damage control orthopaedics, and a sequence of skeletal fixation was planned based on the hemodynamic stability and periodical serum lactate assessment. Symmetrical quadruple limb fractures are very rare, which could be associated with higher mortality. A meticulous clinical evaluation, periodical blood parameter assessment and strict adherence to the principles of damage control orthopaedics can be conducive to prevent life-endangering complications.
Male ; Humans ; Young Adult ; Adult ; Femoral Fractures/complications* ; Femur ; Fracture Fixation ; Accidental Falls ; Radiography

We report on three cases of subtrochanteric femoral fractures during trochanteric intramedullary nailing for the treatment of femoral shaft fractures. Trochanteric intramedullary nails, which have a proximal lateral bend, are specifically designed for trochanteric insertion. When combined with the modified insertion technique, trochanteric intramedullary nails reduce iatrogenic fracture comminution and varus malalignment. We herein describe technical aspects of trochanteric intramedullary nailing for femoral shaft fractures to improve its application and prevent implant-derived complications.
Adult ; Aged ; Female ; Femoral Fractures/radiography/*surgery ; Fracture Fixation, Internal/*adverse effects/methods ; Hip Fractures/*etiology/radiography ; Humans ; Iatrogenic Disease ; Male ; Middle Aged

BACKGROUND: We evaluated the clinical and radiologic results of impacted femoral neck fractures treated with multiple pinning and determined the influence of the progression of impaction at the fracture site on clinical outcome. METHODS: There were 34 patients with a mean age of 65.5 years. The mean follow-up period was 3.4 years. Progression of fracture site impaction was measured using an articulo-trochanteric distance index and the percentage decrease in the articulo-trochanteric distance index between follow-up intervals. The failure of treatment was clarified as non-union and avascular necrosis. Other characteristics of the patients, including mean waiting time for surgery, preoperative Singh index score, and body mass index, were also measured to evaluate the influence on the clinical outcome of surgery. RESULTS: There were 6 fractures which were not treated successfully (3 non-union, 8.8% and 3 avascular necrosis, 8.8%). The mean percentage decrease of the articulo-trochanteric distance index within the first 6 weeks after surgery was 4.5% in the successful group and 25.1% in the failure group (p < 0.001). There was also a significant mean percentage decrease in the articulo-trochanteric distance index between 6 weeks and 3 months (p < 0.001). CONCLUSIONS: Primary stabilization with Knowles pins for impacted femoral neck fractures had a reasonable clinical outcome with low morbidity. Despite a significant difference of a mean percentage decrease in the articulo-trochanteric distance index between the successful group and the failure group, we could not verify it as a risk factor for failure of treatment because the odds ratio was not statistically significant.
Adult ; Aged ; Aged, 80 and over ; Bone Nails ; Female ; Femoral Neck Fractures/complications/radiography/*surgery ; Femur Head Necrosis/etiology/radiography ; Follow-Up Studies ; *Fracture Fixation, Internal ; Fractures, Ununited/radiography ; Hip Joint/*pathology/radiography ; Humans ; Male ; Middle Aged ; Odds Ratio ; Treatment Outcome