scholarly journals Treatment of Pauwels type III femoral neck fracture with medial femoral neck support screw: a biomechanical and clinical study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhichao Gao ◽  
Mei Wang ◽  
Baojie Shen ◽  
Xiaodong Chu ◽  
Di Ruan
Keyword(s):  
Femoral Head ◽  
Femoral Neck ◽  
Fracture Healing ◽  
Femoral Neck Fracture ◽  
Biomechanical Study ◽  
Femoral Head Necrosis ◽  
Vertical Shear ◽  
Control Group ◽  
Fixation Failure ◽  
Neck Fracture

AbstractA femoral neck fracture is currently one of the most common types of fracture in clinical practice. The incidence continues to increase due to traffic accidents, trauma, and osteoporosis. This research includes a biomechanical study and a clinical retrospective study. In the biomechanical studies, three groups’ effects (Control Group: 3CCS, DHS group, and study Group: 3CCS + mFNSS group) were compared by vertical compression tests, torsion tests, and fatigue tests. All the data were collected and analyzed. We subsequently performed a retrospective analysis of 131 patients with femoral neck fractures. The operative time, intraoperative blood loss, quality of postoperative fracture reduction, and follow-up observation of fracture healing, screw retreatment rates and fixation failure rates, as well as femoral head necrosis rates and hip function in two groups with 3CCS and 3CCS + mFNSS were compared. By the biomechanical study, we found that 3CCS + Mfnss group were biomechanically superior to 3CCS group and superior to the DHS group in terms of resistance to torsion. However, it was less effective than the DHS group in compressive strength and fatigue resistance. In terms of clinical application, 3CCS + mFNSS group was found to have lower screw retreatment rates and femoral head necrosis rates, and to have better fracture healing rates than group with 3CCS, indicating that medial support screws can effectively resist the vertical shear forces of fracture ends and promote the stability and healing of fracture ends, as well as to reduce the incidence of postoperative complications.

scholarly journals Correlation Between Reduction Quality of Femoral Neck Fracture and Femoral Head Necrosis Based on Biomechanics

2019 ◽  
Vol 11 (2) ◽  
pp. 318-324 ◽  
Author(s):  
Ying Wang ◽  
Jian‐xiong Ma ◽  
Tao Yin ◽  
Zhe Han ◽  
Shuang‐shuang Cui ◽  
...  
Keyword(s):  
Femoral Head ◽  
Femoral Neck ◽  
Femoral Neck Fracture ◽  
Femoral Head Necrosis ◽  
Neck Fracture

scholarly journals Application of Robot Positioning for Cannulated Screw Internal Fixation in the Treatment of Femoral Neck Fracture: Retrospective Study (Preprint)

2020 ◽  
Author(s):  
Lei Wan ◽  
Xiangyun Zhang ◽  
Dalong Wu ◽  
Zhihao Li ◽  
Dongtao Yuan ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Femoral Neck ◽  
Internal Fixation ◽  
Fracture Healing ◽  
Femoral Neck Fracture ◽  
Cannulated Screw ◽  
Control Group ◽  
Study Group ◽  
Robot Assisted ◽  
Neck Fracture

BACKGROUND Femoral neck fracture is a common type of hip fracture. Conventional surgical treatment aims at fixing the fracture site with screws and then gradually promoting bone healing. A robot-assisted orthopedic surgery system is computer technology applied to surgical treatment. OBJECTIVE This study aimed to explore the therapeutic effect and prognostic value of percutaneous cannulated screw internal fixation using robot-assisted positioning in patients with femoral neck fractures. METHODS From July 2018 to September 2019, 42 cases of femoral neck fracture admitted to the Second Affiliated Hospital of Luohe Medical College were randomly and averagely divided into control and study groups. The patients in the control group were treated with conventional percutaneous cannulated screw internal fixation, while the patients in the study group were treated with robot-assisted percutaneous cannulated screw fixation during surgical treatment. We compared the treatment conditions and results of the operation between the 2 groups. The Harris score was used to evaluate the treatment efficacy. The state of fracture healing was followed up and compared between the 2 groups. RESULTS The duration of the operation was shorter, there was less fluoroscopy use, and there were fewer drilled holes in the study group than in the control group (all, <i>P</i>&lt;.001). There was no statistical difference in the amount of intraoperative bleeding between the 2 groups (<i>P</i>=.33). The Harris score (<i>P</i>=.045) and number of excellent and good ratings (<i>P</i>=.01) were significantly higher in the study group than in the control group. The difference in the fracture healing rate between the 2 groups was not statistically significant (<i>P</i>=.23). The fracture healing duration of the study group was shorter than that of the control group (<i>P</i>=.001). CONCLUSIONS The use of robotic positioning aids in the treatment of femoral neck fractures with percutaneous cannulated screw fixation can effectively improve the efficiency of surgery, shorten the duration of surgery, and reduce the radiation damage to patients. Meanwhile, it improves postoperative treatment and recovery rates of the patients and shortens the fracture healing time.

scholarly journals Application of Robot Positioning for Cannulated Screw Internal Fixation in the Treatment of Femoral Neck Fracture: Retrospective Study

10.2196/24164 ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. e24164
Author(s):  
Lei Wan ◽  
Xiangyun Zhang ◽  
Dalong Wu ◽  
Zhihao Li ◽  
Dongtao Yuan ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Femoral Neck ◽  
Internal Fixation ◽  
Fracture Healing ◽  
Femoral Neck Fracture ◽  
Cannulated Screw ◽  
Control Group ◽  
Study Group ◽  
Robot Assisted ◽  
Neck Fracture

Background Femoral neck fracture is a common type of hip fracture. Conventional surgical treatment aims at fixing the fracture site with screws and then gradually promoting bone healing. A robot-assisted orthopedic surgery system is computer technology applied to surgical treatment. Objective This study aimed to explore the therapeutic effect and prognostic value of percutaneous cannulated screw internal fixation using robot-assisted positioning in patients with femoral neck fractures. Methods From July 2018 to September 2019, 42 cases of femoral neck fracture admitted to the Second Affiliated Hospital of Luohe Medical College were randomly and averagely divided into control and study groups. The patients in the control group were treated with conventional percutaneous cannulated screw internal fixation, while the patients in the study group were treated with robot-assisted percutaneous cannulated screw fixation during surgical treatment. We compared the treatment conditions and results of the operation between the 2 groups. The Harris score was used to evaluate the treatment efficacy. The state of fracture healing was followed up and compared between the 2 groups. Results The duration of the operation was shorter, there was less fluoroscopy use, and there were fewer drilled holes in the study group than in the control group (all, P<.001). There was no statistical difference in the amount of intraoperative bleeding between the 2 groups (P=.33). The Harris score (P=.045) and number of excellent and good ratings (P=.01) were significantly higher in the study group than in the control group. The difference in the fracture healing rate between the 2 groups was not statistically significant (P=.23). The fracture healing duration of the study group was shorter than that of the control group (P=.001). Conclusions The use of robotic positioning aids in the treatment of femoral neck fractures with percutaneous cannulated screw fixation can effectively improve the efficiency of surgery, shorten the duration of surgery, and reduce the radiation damage to patients. Meanwhile, it improves postoperative treatment and recovery rates of the patients and shortens the fracture healing time.

An evaluation of bone loss after total hip arthroplasty for femoral head necrosis after femoral neck fracture

1999 ◽  
Vol 14 (1) ◽  
pp. 64-70 ◽  
Author(s):  
Gustaf Neander ◽  
Karin von Sivers ◽  
Per Adolphson ◽  
Mats Dahlborn ◽  
Nils Dalén
Keyword(s):  
Femoral Head ◽  
Total Hip Arthroplasty ◽  
Bone Loss ◽  
Femoral Neck ◽  
Femoral Neck Fracture ◽  
Hip Arthroplasty ◽  
Femoral Head Necrosis ◽  
Total Hip ◽  
Neck Fracture

scholarly journals Re-Recognition of Garden Index as a Criterion for Evaluating the Quality of Femoral Neck Fracture Reduction: An Imaging Study Based on Cadaver Specimens

2021 ◽  
Author(s):  
Leyi Cai ◽  
Wenjie Li ◽  
Wenhao Zheng ◽  
Jianshun Wang ◽  
Xiaoshan Guo ◽  
...  
Keyword(s):  
Femoral Head ◽  
Femoral Neck ◽  
Femoral Neck Fracture ◽  
Kirschner Wire ◽  
Imaging Study ◽  
Lateral View ◽  
Healthy Human ◽  
Rotational Displacement ◽  
Significant Difference ◽  
Neck Fracture

Abstract ObjectiveTo investigate whether the Garden index can determine the rotational displacement of femoral neck fracture. MethodsTen healthy human femoral specimens were obtained. A 2.0 mm diameter Kirschner-wire was placed in the center of the femoral head. The osteotomy was perpendicular in the middle of the femoral neck. The distal osteotomy surface was indicated the angle of rotation (pronation and supination to 90°, every 10° was an interval). The X-ray of anterior-posterior and lateral view was taken at different angles according to the mark. The Garden index and other relevant data were analyzed with the PCAS system. Meanwhile, the change of the area of the femoral head fovea at different rotation angles was observed. ResultsThere was no significant difference in the Garden index in 0~30° at pronation and supination position (P>0.05). In range of 40°~90°, there was a statistical difference in the Garden index (P<0.05). With the increase of the pronation angle, the area of the femoral head fovea is gradually reduced; as the angle of the supination increases, the area of the femoral head fovea is gradually increased. ConclusionThe Garden Index cannot accurately determine the rotational displacement of the femoral neck fracture during the pronation or supination range of 0~30°. Changes in the area of the femoral head fovea can help determine the rotational displacement of the femoral neck fracture.Level of EvidenceLevel V.

scholarly journals Femoral Neck Fracture Fixation Failure: A Review and Stepwise Approach

2020 ◽  
Author(s):  
Seyed Mir Mansoor Moazen Jamshidi ◽  
Mohammadreza Razzaghof ◽  
Seyed Mohammad Javad Mortazavi
Keyword(s):  
Femoral Neck ◽  
Femoral Neck Fracture ◽  
Fracture Fixation ◽  
Fixation Failure ◽  
Stepwise Approach ◽  
Neck Fracture

The article's abstract is not available.

scholarly journals Serum albumin and fixation failure with cannulated hip screws in undisplaced intracapsular femoral neck fracture

2016 ◽  
Vol 98 (6) ◽  
pp. 376-379 ◽  
Author(s):  
O Riaz ◽  
R Arshad ◽  
S Nisar ◽  
R Vanker
Keyword(s):  
Femoral Neck ◽  
Serum Albumin ◽  
Femoral Neck Fracture ◽  
Femoral Neck Fractures ◽  
Fixation Failure ◽  
Non Union ◽  
Preoperative Serum ◽  
Neck Fracture ◽  
Posterior Tilt ◽  
Intracapsular Femoral Neck Fracture

Introduction Internal fixation of undisplaced intracapsular femoral neck fractures with cannulated hip screws is a widely accepted surgical technique, despite reported failure rates of 12%–19%. This study determined whether preoperative serum albumin levels are linked to fixation failure. Methods We retrospectively reviewed 251 consecutive undisplaced intracapsular femoral neck fracture patients treated with cannulated hip screws in a district general hospital. Preoperative albumin levels were measured, and the fixation technique, classification and posterior tilt on radiography assessed. Fixation failure was defined as a screw cut, avascular necrosis (AVN) or non-union. Results Of the patients, 185 were female and 66 male. The mean age was 77 years (range 60–101 years). Thirty seven (15%) patients had fixation failure: 10 (4%) due to AVN; 12 (5%) due to non-union; and 15 (6%) due to fixation collapse. Low serum albumin levels were significantly associated with failure (p=0.01), whereas gender (p=0.56), operated side (p=0.62), age (p=0.34) and screw configuration (p=0.42) were not. A posterior tilt angle greater than 20° on lateral radiography significantly predicted failure (p=0.002). Conclusions Preoperative serum albumin is an independent predictor of cannulated hip screw fixation failure in undisplaced femoral neck fractures. Nutritional status should therefore be considered when deciding between surgical fixation and arthroplasty to avoid the possibility of revision surgery, along with an increased risk of morbidity and mortality.

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