Objective To evaluate the clinical effect of cannulatedscrew on treatment of femoral neck fracture(FNF). Methods Forty-two FNFpatients were treated by using cannulated screw from January 2001 to December 2005.There were 22males and 20 females with an average age of 41 years (19-59 years). Fracture was caused by traffic accident in 21 cases, by falling from height in 14 cases and by bruise in 7 cases. All cases were fresh fracture. According to Garden criterion for typing, 15 cases were classified as type Ⅱ, 16 cases as type Ⅲ and 11 cases as type Ⅳ . It was 7 hours to 15 days from injury to operation. Results Thepatients were followed up for 1-6 years with an average of 2.5 years. The average fracture union time was 6.5 months. Three patients had ischemic necrosis of femoral head, andloosening and breakage of screw and rob was observed in 1 case. According to Brumback criterion for hip joint function, the result was excellent in 18 cases, good in 20 cases and bad in 4 cases, and the excellent and good rate was 90.4%. Conclusion Cannulated screw fixation is a good method to treat FNF in young adults. It can improve the rate of fracture union and reduce the rate of avascular necrosis of femoral head.
Objective To compare the effectiveness of biplanar vertical fixation and inverted triangle fixation with hollow screw for Pauwels type Ⅲ femoral neck fracture in young and middle-aged patients. Methods The clinical data of 55 young and middle-aged patients with Pauwels type Ⅲ femoral neck fracture between June 2021 and December 2022 was retrospectively analyzed. All patients were treated with closed reduction and internal fixation with hollow screws, 25 cases were treated with biplanar vertical fixation (study group), 30 cases with inverted triangle fixation (control group). There was no significant difference in gender, age, affected side, cause of injury, underlying diseases, and time from injury to operation between the two groups (P>0.05). The operation time, intraoperative blood loss, fluoroscopy times, guide needle puncture times, starting time of weight bearing, time of full weight bearing, time of fracture healing, and complications were recorded and compared between the two groups. The hip joint function was evaluated by Harris score at 1 day, 6 months, 12 months after operation, and at last follow-up, and the pain relief was evaluated by visual analogue scale (VAS) score. The femoral neck shortening was measured on the X-ray film at last follow-up. Results All patients were followed up 12-31 months (mean, 22.0 months), and there was no significant difference in follow-up time between the two groups (P>0.05). The operation time, intraoperative blood loss, and fluoroscopy times in the study group were higher than those in the control group, but the difference was not significant (P>0.05). The guide needle puncture times in the study group was more than that in the control group, and the time of starting weight bearing and the time of full weight bearing in the study group were shorter than those in the control group, the differences were significant (P<0.05). Bony healing was achieved in both groups, and there was no significant difference in fracture healing time between the two groups (P>0.05). No osteonecrosis of the femoral head and incision-related complication was found in the two groups during follow-up, and the femoral neck shortening length in the study group was significantly shorter than that in the control group at last follow-up (P<0.05). There was no significant difference in Harris score between the two groups at 1 day after operation (P>0.05), and the Harris score of the study group was significantly better than that of the control group at other time points (P<0.05); there was no significant difference in VAS score between the two groups at each time point after operation (P>0.05). Conclusion Compared with the inverted triangle fixation, the treatment of Pauwels type Ⅲ femoral neck fracture with biplanar vertical fixation can effectively reduce femoral neck shortening without affecting fracture healing, and improve hip joint function in early stage.
ObjectiveTo assess the effectiveness of pedicled iliac periosteal flap graft for treatment of avascular necrosis of the femoral head (ANFH) after femoral neck fracture in adolescents. MethodsBetween December 2006 and August 2011, 9 patients (9 hips) with ANFH after femoral neck fracture were treated with pedicled iliac periosteal flap graft. There were 6 males and 3 females with an average age of 14.7 years (range, 10-18 years). Fractures were caused by traffic accident injury (5 cases), falling injury from height (3 cases), and fall injury (1 case). The time from injury to internal fixation with Kirschner wires or cannulated screws was 3-16 days, and all fractures healed within 10 months after internal fixation. The interval between fracture fixation and ANFH was 10-42 months (mean, 24.4 months). According to Steinberg staging system, 1 hip was classified as stage Ⅲb, 2 hips as stage Ⅲc, 1 hip as stage IVa, 3 hips as stage IVb, and 2 hips as stage IVc. The Harris scores and Steinberg classification were compared between at pre- and post-operation to assess the outcomes clinically and radiologically. ResultsAll incisions healed by first intention. No complications of infection, deep venous thrombosis of lower limb, and pain and numbness of donor site were observed during or after operation. All patients were followed up 38-76 months (mean, 52 months). Joint pain was relieved; no leg length discrepancy was observed; the walking gait was improved and range of motion of hips was increased. The Harris score was significantly increased from 62.8±3.6 at pre-operation to 92.7±9.9 at last follow-up, showing significant difference (t=-12.244, P=0.000). The hip function was excellent in 5 hips, good in 3 hips, and poor in 1 hip, and the excellent and good rate was 88.89%. Post-operative radiological assessment demonstrated that only 1 hip (stage Ⅲb) had further collapse of the femoral head, the other hips had no incidence of deterioration. The radiological success rate was 88.89% (8/9). ConclusionThe pedicled iliac periosteal flap graft for ANFH after femoral neck fracture in adolescents can provide good osteogenesis and vascular reconstruction of the femoral head.
Objective To evaluate the feasibility and short-term effectiveness of polyaxial locking plate for fixation of femoral neck fracture in the middle-aged and elderly patients. Methods A retrospective analysis was made on the clinical data of 13 patients with femoral neck fracture undergoing fixation with polyaxial locking plates between September 2013 and June 2015 (group A) and 13 patients with femoral neck fracture undergoing fixation with three cannulated screws in the same period (group B). There was no significant difference in gender, age, side, cause of injury, Garden type, type of fracture position, type of Pauwels angle, Singh index, time between injury and operation, and preoperative complications between 2 groups (P>0.05). The femoral neck shortening at 1 year postoperatively, and fracture nonunion, femoral head necrosis, and Harris hip score at last follow-up were compared between 2 groups. Results The follow-up time was (19.23±3.98) months in group A and (18.00±3.61) months in group B, showing no significant difference between 2 groups (t=2.063,P=0.417). No femoral head necrosis occurred in group A, but head necrosis occurred in 1 case of group B, and hemiarthroplasty was performed. There was no significant difference in the rate of femoral head necrosis between 2 groups (χ2=0.000,P=1.000). Bone union was obtained in the other patients of 2 groups. The Harris hip score of group A (85.23±2.95) was significantly higher than that of group B (81.92±3.64) at last follow-up (t=2.064,P=0.018). No infection or internal fixation failure occurred in 2 groups. One case had pain at the outer thigh at 1 month after operation in group A, but pain relief was achieved at 3 months after operation. At 1 year after operation, no femoral neck shortening occurred in group A, but degree I, II, and III femoral neck shortening was observed in 3, 2, and 8 cases of group B, respectively, showing significant difference between 2 groups (Z=–4.714,P=0.000). Conclusion Although fixation with polyaxial locking plate for femoral neck fracture in the middle-aged and elderly patients has similar femoral head necrosis rate to fixation with cannulated screws, it has advantages in preventing neck shortening and improving hip joint function after operation.
Objective To compare the curative effect of dynamic hi p screw (DHS) combined with anti-rotation screw and cannulated screw in treating patients with Pauwels type II or III femoral neck fracture and to provide the basis for the choice of surgical procedure. Methods Between March 2008 and September 2009, 51 patients with fresh Pauwels type II or III femoral neck fracture were treated with DHS combined with anti-rotation screw (DHS group) and three cannulated screws (cannulated screw group). The DHS group included 23 patients, 13 males and 10 females, aging 27-59 years (mean, 43.2 years); fracture was caused by fall ing in 1 case, by traffic accident in 17, by fall ing from height in 5 with a mean time of 27 hoursfrom injury to hospital ization (range, 12-70 hours); and 23 fractures included 9 Pauwels type II and 14 Pauwels type III femoral neck fracture. The cannulated screw group included 28 patients, 12 males and 16 females, aging 20-60 years (mean, 40.7 years); fracture was caused by fall ing in 1 case, by traffic accident in 22, by fall ing from height in 5 with a mean time of 25 hours from injury to hospital ization (range, 9-38 hours); and 28 fractures included 12 Pauwels type II and 16 Pauwels type III femoral neck fracture. There was no significant difference in the basel ine characteristics between 2 groups (P gt; 0.05). Results The incision heal ing of both groups by first intention was achieved. There were significant differences in operation time, incision size, operation blood loss, the cases of blood transfusion, the amount of blood transfusion, C reaction protein level on the 2nd postoperative day, and hospital ization days between 2 groups (P lt; 0.05). In DHS group, anatomic reduction was observed in 20 cases (86.96%) and satisfactory reduction in 3 cases (13.04%), while in cannulated screw group, anatomic reduction was observed in 25 cases (89.29%) and satisfactory reduction in 3 cases (10.71%) ; there was no significant difference (χ2=0.660, P=1.000). The patients were followed up 12-30 months with an average of 14.8 months. There was no significant difference (P gt; 0.05) in the rate of nonunion (10.71% vs. 0), the implant failure (3.57% vs. 0), and avascular necrosis of the femoral head (10.71% vs. 0) between the DHS group and the cannulated screw group. The union time was (94.5 ± 2.0) days in the DHS group and (106.0 ± 33.5) days in the cannulated screw group, showing no significant difference (t=—1.641, P=0.107). The re-opereation rates and the overall success rates were 25% and 75% in the cannulated group and were 0 and 100% in the DHS group, showing significant differences (χ2=6.650, P=0.012). At last follow-up, there was no significant difference in Harris hip score and visualanalogue scale (VAS) score between DHS group and cannulated screw group (P gt; 0.05). Conclusion The optimal treatment of young adults Pauwels type II or III femoral neck fracture is DHS combined with anti-rotation screw with an high overall success and less compl ications.
Objective To analyze the characteristics of femoral neck fractures in young and middle-aged adults by means of medical image analysis and fracture mapping technology to provide reference for fracture treatment. Methods A clinical data of 159 young and middle-aged patients with femoral neck fractures who were admitted between December 2018 and July 2019 was analyzed. Among them, 99 patients were male and 60 were female. The age ranged from 18 to 60 years, with an average age of 47.9 years. There were 77 cases of left femoral neck fractures and 82 cases of right sides. Based on preoperative X-ray film and CT, the fracture morphology was observed and classified according to the Garden classification standard and Pauwels’ angle, respectively. Mimics19.0 software was used to reconstruct the three-dimensional models of femoral neck fracture, measure the angle between the fracture plane and the sagittal plane of the human body, and observe whether there was any defect at the fracture end and its position on the fracture surface. Through reconstruction, virtual reduction, and image overlay, the fracture map was established to observe the fracture line and distribution. Results According to Garden classification standard, there were 6 cases of type Ⅰ, 61 cases of type Ⅱ, 54 cases of type Ⅲ, and 38 cases of type Ⅳ. According to the Pauwels’ angle, there were 12 cases of abduction type, 78 cases of intermediate type, and 69 cases of adduction type. The angle between fracture plane and sagittal plane of the human body ranged from –39° to +30°. Most of them were Garden type Ⅱ, Ⅳ and Pauwels intermediate type. The fracture blocks were mainly in the form of a triangle with a long base and mainly distributed below the femoral head and neck junction area. Twenty-six cases (16.35%) were complicated with bone defects, which were mostly found in Garden type Ⅲ, Ⅳ, and Pauwels intermediate type, located at the back of femoral neck and mostly involved 2-4 quadrants. The fracture map showed that the fracture line of the femoral neck was distributed annularly along the femoral head and neck junction. The fracture line was dense above the femoral neck and scattered below, involving the femoral calcar. Conclusion The proportion of displaced fractures (Garden type Ⅲ, Ⅳ) and unstable fractures (Pauwels intermediate type, adduction type) is high in femoral neck fractures in young and middle-aged adults, and comminuted fractures and bone defects further increase the difficulty of treatment. In clinical practice, it is necessary to choose treatment plan according to fracture characteristics. Anatomic reduction and effective fixation are the primary principles for the treatment of femoral neck fracture in young and middle-aged adults.
Objective To explore the biomechanical stabil ity of ideal compression screw (I.CO.S.) for treatment of femoral neck fracture and to provide theoretical basis for choosing I.CO.S. in cl inical appl ication. Methods Thirty cadaveric human femurs were selected and divided randomly into experimental group (n=15) and control group (n=15), 15 in each group were divided equally into three sub-groups (n=5) again. The model of subcapital femoral neck fracture was made, then given anatomical reduction and fixed with I.CO.S. (experimental group) and general cannulated compression screw (control group) separately with three different configurations: two horizontal (parallel screws in superior aspect of femoral neck), two vertical (parallel screws in sagittal plane of femoral neck) and reverse triangle. The different biomechanical performances were evaluated through experimental stress analysis. Results In biomechanical stabil ity aspect: groups A, B, C was better than groups D, E, F in respect of horizontal displacement and yield load (P lt; 0.05); groups A, D was better than groups B, E in respect of the straining, horizontal displacement and yield load (P lt; 0.05); and there were not significant differences in all biomechanical indicators between group C and group F, and between group A and group C(P gt; 0.05). Conclusion I.CO.S. has the good biomechanical stabil ity for treatment of femoral neck fracture, which mayprovide basis for appl ication.
ObjectiveTo compare the early clinical and radiographic outcomes of hemiarthroplasty by a minimal invasive Supercap approach and by a conventional approach for elderly displaced femoral neck fractures. MethodsBetween January and June 2015, 70 geriatric patients with displaced femoral neck fracture underwent cementless bipolar hemiarthroplasty by minimally invasive Supercap approach (group A, n=35) or by posterolateral approach (group B, n=35). One patient was excluded from the study in group B because of too wide femur cavity. There was no significant difference in gender, age, body mass index, fracture cause, time from fracture to operation, fracture side, fracture classification, and preoperative visual analogue scale (VAS), and hemoglobin-level between the 2 groups (P > 0.05). The operation time, intraoperative blood loss, incision length, and complications were recorded. The early clinical evaluations included timed up and go test (TUG), hemoglobin-level, VAS score, and satisfaction. The anteroposterior and lateral X-ray films were taken to measure the stem alignment, difference in leg length, and difference in femoral offset. ResultsAll the patients were followed up 6-11 months (mean, 7.32 months). No patients died during follow-up. There was no significant difference in operation time and intraoperative blood loss between the 2 groups (P > 0.05). The incision length of group A was significantly smaller than that of group B (P < 0.05). One patient had delayed union of incision in group A (2.86%); 2 patients had deep vein thrombosis in group B (5.88%); and there was no significant difference in the complication rate (χ2=0.764, P=0.512). The postoperative hemoglobin level showed no significant difference between the 2 groups (P > 0.05). Group A had lower VAS score and higher subjective satisfaction than group B, showing significant difference at 1, 5, and 14 days after operation (P < 0.05). The TUG of group A was significantly shorter than that of group B at 5, 14, and 30 days (P < 0.05). There was no significant difference in femoral offset or leg length on the X-ray films (t=1.273, P=0.851; t=0.409, P=0.327). The good rate of stem alignment was 82.86% (29/35) in group A, and was 85.30% (29/34) in group B, showing no significant difference (χ2=0.584, P=0.497). ConclusionBoth minimal invasive Supercap approach and conventional posterolateral approach are effective and safe for elderly displaced femoral neck fractures in hemiarthroplasty. Supercap approach has the advantages of less trauma, pain relief, and improvement of mobility and rapid rehabilitation.
ObjectiveTo investigate the safety and efficacy of sequential use of tranexamic acid (TXA) in the perioperative period of half hip replacement for femoral neck fracture in the elderly.MethodsPatients who underwent hemiarthroplasty due to femoral neck fracture in Meishan Traditional Chinese Medicine Hospital from January 2016 to October 2018 were retrospectively included. According to the use of TXA during the perioperative period, the patients were divided into group A (no use of TXA), group B (TXA use on the day of surgery), and group C (sequential therapy). The perioperative blood loss, blood transfusion rate and incidence of deep vein thrombosis (DVT) in the 3 groups were recorded and counted.ResultsA total of 113 patients were included, and 99 patients were finally included (31 in group A, 36 in group B, and 32 in group C). There were no statistically significant difference in age, sex, body mass index, hemoglobin (Hb) at admission, hematocrit at admission, blood volume, or blood transfusion among the three groups. The differences in total blood loss (F=43.613, P<0.001), preoperative blood loss (F=4.746, P=0.011), preoperative Hb (F=6.220, P=0.003), maximum Hb change (F=18.913, P<0.001), and postoperative length of hospital stay (F=43.511, P<0.001) among the three groups were statistically significant. There was no DVT of the lower extremities or pulmonary embolism found in the three groups. The differences in preoperative blood loss and preoperative Hb were not statistically significant between group A and group B. The difference in postoperative length of hospital stay was not statistically significant between group B and group C. The differences in other indexes between all the pairs of the three groups were statistically significant (P<0.05).ConclusionUsing TXA early after femoral neck fracture and sequentially to the day of surgery can reduce perioperative blood loss, including hidden blood loss before surgery and blood loss during and after the operation, which is beneficial to patients’ postoperative recovery without increasing the risk of DVT.
ransopition of vascularized fascia-lata-iliac bone with its periorteum composite graft was used inthe treatment of 20 cases of old fractures of femoral neck. Because the vascular bundie containing thedeep lateral femoral circumflex artery needed not to be dissected during operation, it reduced thechance to irritate the blood vessel and the implantation of the vaseularized composite graft with itsporicateum which wrapped around the neck of femur, it would improve the blood circulation of the femur and the fracture site, thus enhancing the fracture healing and giving the chance to prevent the development of avascular necrosis of femoral head.