Objective To study the effectiveness of anterolateral C-shaped approach in the treatment of intertrochanteric fracture of the femur in elderly patient by comparing with traditional anterolateral approach. Methods Between April 2010 and November 2011, 66 patients with intertrochanteric fracture of the femur were analyzed retrospectively. Of 66 patients, 37 underwent improved anterolateral C-shaped approach combined with fixation of dynamic hip screw (DHS) (improved group), and 29 underwent traditional anterolateral approach combined with fixation of DHS (conventional group). There was no significant difference in gender, age, injury cause, side, disease duration, fracture type, and complication between 2 groups (P gt; 0.05). The operation time, intraoperative blood loss, postoperative drainage volume, and hospitalization time were recorded; and X-ray films were taken to observe the fracture healing. The hip function was evaluated according to self-established criterion. Results The operation was successfully completed in all patients, and primary healing of incision was achieved. All patients were followed up 12-24 months (mean, 17.8 months). Bone union was achieved in both groups; the fracture healing time was 3-6 months (mean, 4.8 months). No loosening or breaking of internal fixation was observed during follow-up period. The operation time and postoperative drainage volume of improved group were significantly less than those of conventional group (P lt; 0.05); no significant difference was found in intraoperative blood loss and hospitalization days between 2 groups (P gt; 0.05). According to self-established criterion, improved group was significantly better than conventional group in recovery of hip joint motion and function at 6 and 12 months after operation (P lt; 0.05). Conclusion Anterolateral C-shaped approach combined with DHS could minimize muscle injury and scar formation, which is beneficial to surgical exposure and early postoperative rehabilitation.
Objective To compare the efficacy and safety of dynamic hip screw (DHS) + anti-rotation screw and cannulated screw alone for femoral neck fracture in adults. Methods PubMed, Web of Science, Cochrane Library, China National Knowledge Infrastructure, SinoMed, Wanfang, and Chongqing VIP database were searched for the literature related to the comparison between DHS + anti-rotation screw and cannulated screw alone for femoral neck fracture in adults from the establishment of databases to 2022. RevMan 5.3 software was used for meta-analysis. Results Finally, 25 clinical studies were included, including 8 randomized controlled trials and 17 observational studies, 5 in English and 20 in Chinese. There were a total of 2099 patients, including 989 in the DHS + anti-rotation screw group and 1110 in the cannulated screw group. The meta-analysis results showed that the incidence of bone nonunion [odds ratio (OR)=0.29, 95% confidence interval (CI) (0.17, 0.48)], incidence of femoral head necrosis [OR=0.48, 95% CI (0.27, 0.88)], failure rate of internal fixation [OR=0.28, 95% CI (0.15, 0.51)] in the DHS + anti-rotation screw group were lower than those in the cannulated screw group (P<0.05). The surgical duration [mean difference (MD)=9.91, 95% CI (6.78, 13.05)], incision length [MD=1.25, 95% CI (0.15, 2.35)], and Harris score [MD=6.77, 95% CI (4.66, 8.88)] in the DHS + anti-rotation screw group were higher than those in the cannulated screw group (P<0.05). There was no statistically significant difference in intraoperative bleeding volume, Visual Analogue Scale score, hospital stay, and fracture healing time between the two groups (P>0.05). The incidence of bone nonunion in the DHS + anti-rotation screw group after Pauwels type Ⅲ fracture [OR=0.16, 95% CI (0.05, 0.50)] was lower than that in the cannulated screw group (P<0.05), and there was no statistically significant difference in the incidence of femoral head necrosis between the two groups (P>0.05). Conclusions For femoral neck fracture in adults, DHS + anti-rotation screw can reduce the incidence of bone nonunion, femoral head necrosis, and internal fixation failure compared with cannulated screw alone, and has a higher Harris score, but the surgical duration and incision are longer. Overall, DHS + anti-rotation screw are better at reducing the incidence of complications than cannulated screws alone.
ObjectiveTo design and produce a lesser trochanteric reduction fixation system and verify its value and effectiveness. MethodsA lesser trochanteric reduction fixation system was designed and produced according to the anatomical features of the lesser trochanteric fractures. Sixty-six patients with intertrochanteric fractures of Evans type Ⅲ were included between January 2010 and July 2012. Of 66 patients, 32 were treated with dynamic hip screw (DHS) assisted with the lesser trochanteric reduction fixation system (study group), and 34 cases were treated with DHS only (control group). The 2 groups were comparable with no significant difference in gender, age, the reasons, and the types of the fractures (P>0.05). The operation time, intraoperative blood loss, neck-shaft angle, bone healing time, ratio of successful fixations, and the functional evaluation of the hip joint after operation were compared between 2 groups. ResultsThe study group had shorter operation time [(58.4±5.3) minutes] and less intraoperative blood loss [(186.3±6.6) mL] than the control group[(78.5±6.2)minutes and (246.2±8.7) mL], showing significant differences (t=-14.040, P=0.000; t=-31.145, P=0.000). There was no significant difference in neck-shaft angle between study group [(138.6±3.0)°] and control group [(139.4±2.9)°] (t=-1.044, P=0.301). The wounds healed by first intention in both groups. The 30 and 31 patients were followed up 12 to 24 months (mean, 15 months) in the study group, and 13 to 25 months (mean, 16 months) in the control group, respectively. All fractures healed well in 2 groups. The study group had significantly shorter healing time [(8.8±2.0) weeks] than the control group [(10.7±3.4) weeks] (t=-2.871, P=0.006). At 12 months after operation, coxa vara happened in 2 cases of the study group with a successful fixation ratio of 93.3% and in 10 cases of the control group with a successful fixation ratio of 67.7%, showing significant difference (χ2=6.319, P=0.022). According to Harris hip score, the excellent and good rate was 83.3% in the study group (25/30) and was 58.1% in the control group (18/31), showing significant difference (χ2=4.680, P=0.049). ConclusionThe application of the lesser trochanteric reduction fixation system can reduce stripping of the soft tissue around the fracture fragments, shorten the operation time and the healing time, and preserve the function of the hip joint maximumly.
Objective To investigate the appl ication of anti-rotation screw after dynamic hi p screw (DHS) in treatment of intertrochanteric fracture. Methods Between April 2006 and January 2010, 22 cases of intertrochanteric fractures underwent DHS fixation operation with an anti-rotation screw, including 15 males and 7 females with an average ageof 66.3 years (range, 54-83 years). Fractures were caused by sl ipping in 16 cases, traffic accident in 5 cases, and fall ing from height in 1 case. All cases showed closed fractures, including 13 cases in the left and 9 cases in the right. Eighteen cases were simple intertrochanteric fracture, 4 cases were intertrochanteric fractures compl icated with Colles fractures. According to Evans classification standard, there were 14 cases of type I, 6 cases of type II, 1 case of type III, and 1 case of type IV. The time from wound to operation was 3-7 days (mean, 4.5 days). Results The operation time ranged from 51-95 minutes (mean, 72 minutes). The intraoperative blood loss was 150-350 mL (mean, 270 mL). The hospital ization days were 12-35 days (mean, 16.8 days). Primary heal ing was observed in all cases. All cases were followed up 6-17 months (mean, 14 months). Union of fracture was observed at 12-16 weeks (mean, 13.6 weeks); no fracture or internal fixation loosening occurred. According to HUANG Gongyi’s standard of efficacy assessment, the results were excellent in 19 cases and good in 3 cases. Conclusion Appl ication of an anti-rotation screw can help to improve the strength of the DHS for the internal fixation of intertrochanteric fracture, especially the anti-rotation abil ity, which does not increase the operation time obviously.
Objective To investigate the validity of improving the femur’s mechanical characteristics by implanting calcium phosphate ceramic screws after removing dynamic hip screw (DHS). Methods The three dimensional finite element model of the femur was built based on the CT scanning of a normal male volunteer. Then the models of the femur with and without DHS were established. According to calcium phosphate ceramic screws with porosity and apparent elastic modulus, 80% and 0.1 GPa were set as group A, 50% and 1.0 GPa as group B, and 30% and 1.5 GPa as group C. Von Mises stress distribution and maximum stress were recorded when the joint was maximally loaded in a gait cycle. Results The Von Mises in normal femoral shaft was uniform; no phenomena of stress concentration was observed and the maximum stress located at the joint load-bearing site of the proximal femur. The stress concentration was observed in the femur without DHS, and the maximum stress located at the distal femur around the screw hole. By comparing several different calcium phosphate ceramic screws, the stress distribution of group B was similar to normal femur model, and the maximum stress located at the joint load-bearing site. The other screws of groups A and C showed varying degrees of stress concentration. Conclusion Implanting calcium phosphate ceramic screw can improve the mechanical characteristics of the femur after removing dynamic hip screw, and the calcium phosphate ceramic screw with 50% porosity and 1.0 GPa apparent elastic modulus is suitable for implanting.
Objective To investigate the treatment method of senile patients with femoral intertrochanteric fractures and its cl inical outcomes. Methods From January 2005 to December 2007, 192 senile patients with femoral intertrochanteric fractures were treated, including 85 males and 107 females aged 65-92 years old (average 75 years old). The injury was causedby fall on walking in 106 cases, fall when riding a bicycle in 55 cases, and traffic accidents in 31 cases. According to Evans classification, there were 12 cases of type I A, 43 cases of type I B, 29 cases of type II, 24 cases of type III A, 23 cases of type III B, 26 cases of type IV, and 35 cases of type V. One hundred and fifty patients were associated with cardio-cerebrovascular diseases, 120 patients were compl icated with chronicle hypertension, 90 cases were associated with bronchitis, and 75 cases were compl icated with diabetes. The time from injury to hospital admission was 1 hour to 14 days. Among those patients, 108 were treated with conservative treatment, 68 received dynamic hip screw (DHS) fixation, and 16 underwent proximal femoral Gamma nail fixation. Results All the patients were followed up for 12-36 months (average 18 months). The fracture all reached bone union without occurrence of nonunion and delayed union. Patients could take care of themselves, and there were no occurrences of serious pains and dysfunctions. The therapeutic effect was satisfactory. The conservative treatment group: the average hospital stay length was 48 days; the average bone heal ing time was 14 weeks; 23 cases had different degrees of coxa adducta; Harris score system was adopted to evaluate hip joint function, 45 cases were graded as excellent, 31 as good, 10 as fair, and 22 as poor, and the excellent and good rate was 70.4%. DHS internal fixation group: the average operation time was 60 minutes; the average bleeding volume during operation was 200 mL, the average hospital stay length was 24 days; the average bone heal ing time after operation was 12 weeks; Harris score system was adopted to evaluate the injured hip joint function, 38 cases were graded as excellent, 21 as good, 8 as fair, and 1 as poor, and the excellent and good rate was 86.8%. Gamma nailfixation group: the average operation time was 70 minutes; the average bleeding volume during operation was 200 mL, the average hospital stay length was 14 days; the average bone heal ing time after operation was 12 weeks; Harris score system was adopted to evaluate the injured hip joint function, 11 cases were graded as excellent, 4 as good, 1 as fair, and the excellent and good rate was 93.8%. Conclusion For geriatric femoral intertrochanteric fractures, operative treatment should be performed, the preoperative preparation should be sufficient, and individual-oriented treatment method should be selected on the basis of physical conditions of patients and the types of fractures.
目的 评价股骨近端防旋髓内钉（PFNA）、动力髋螺钉（DHS）、伽马钉治疗股骨转子间骨折的有效性和安全性。 方法 计算机检索Cochrane图书馆（2011年第12期），PubMed （1966年－2011年12月），EMBASE（1974年－2011年12月），web of science（1958年－2011年12月），万方数据库（1992年－2011年12月），维普资讯网（1989年－2011年12月），中国期刊全文数据库（1994年－2011年12月），中国生物医学文献数据库（1978年－2011年12月），纳入PFNA、DHS、伽马钉治疗股骨转子间骨折的随机前瞻性研究，采取修订后的Jadad评分量表对纳入研究进行质量评价。用RevMan 5.1软件进行Meta分析。 结果 共纳入12个研究（1 477例患者）。Meta分析结果显示PFNA治疗股骨转子间骨折的手术时间[MD=−32.19，95%CI（−49.69，−14.69），P=0.000 3；MD=−4.52，95%CI（−5.24，−3.80），P＜0.000 01］，出血量[MD=−183.06，95%CI（−277.37，−88.74），P=0.000 1；MD=−49.49，95%CI（−84.15，−14.83），P=0.005]少于DHS组和伽马钉组，但是三者在总有效率、住院时间和术后并发症等方面差异无统计学意义。DHS组与伽马钉组在所有指标差异均无统计学意义。 结论 与DHS、伽马钉相比，PFNA可明显缩短手术时间、降低术中出血量，但并不能提高总有效率、缩短住院时间以及减少术后并发症；而DHS与伽马钉治疗股骨转子间骨折的疗效无明显差异。
Objective To compare the effectiveness between improved anterolateral approach and lateral approach in the treatment of senile intertrochanteric fracture. Methods The clinical data were retrospectively analyzed, from 61 patients with senile intertrochanteric fracture treated between February 2008 and February 2010. Of 61 patients, 34 patients underwent improved anterolateral approach combined with fixation of dynamic hip screw (improved group), and 27 patients underwent conventional lateral approach combined with fixation of dynamic hip screw (conventional group). There was no significant difference in gender, age, injury cause, Evans classification, comorbidities, disease duration, or Harris hip scores between 2 groups (P gt; 0.05). Results The operation was successfully completed in all patients. The operation time, blood loss, perspective frequency during operation, drainage volume, hospitalization days, and out-of-bed time in the improved group were significantly less than those in the conventional group (P lt; 0.05). All patients were followed up 12-24 months (mean, 18.7 months). Bone union was achieved in both groups; the fracture healing time was (11.64 ± 1.28) weeks in the improved group and was (12.29 ± 1.12) weeks in the conventional group, showing no significant difference (t=2.15, P=0.15). Harris hip scores at 3, 6, and 12 months were significantly better than preoperative scores in 2 groups (P lt; 0.05), and significant differences were found among different time points after operation in 2 groups (P lt; 0.05), between 2 groups after operation (P lt; 0.05). There was no significant difference in the incidence of incision infection, limb shortening, coax vara, internal fixation loosening, main screw cutting-out from femoral head between 2 groups (P gt; 0.05), but the incidence of total complications in the improved group was significantly lower than that in the conventional group (P lt; 0.05). Conclusion Compared with conventional lateral approach, improved anterolateral approach has the advantages of sufficient exposure, reducing muscle damage and surgical risk in treating intertrochanteric fracture. Operating treatment of improved anterolateral approach combined with early rehabilitation after surgery can recover hip joint function as quickly as possible.
Objective To study the technique and effect of adjunctive cancellous screw in treatment of intertrochanteric fractures with dynamic hi p screw (DHS) fixation. Methods Between April 2004 and August 2007, 33 patients with intertrochanteric fracture were treated with DHS fixation and adjunctive cancellous screw. There were 13 males and 20 females, aging 43-82 years with an average age of 67 years. Fractures were caused by traffic accident in 7 patients, by fall ing from height in 11 patients, by sprain in 15 patients. All fractures were closed. The patients were operated 3-12 days after injury. According to Evans classification, there were 12 cases of type II, 15 cases of type III, and 6 cases of type IV. Twenty-twocases had osteoporosis. Weight bear time and compl ication were recorded. Fracture heal ing and neck-shaft angle were observed on radiogram. Hip functions were evaluated using Radford criterion. Results Thirty-three patients had no intraoperative compl ications with incision heal ing by first intension. All patients were followed up from 14 months to 38 months, with an average of 21 months. Fracture heal ing was achieved within 14 weeks to 21 weeks, with an average of 17 weeks after operations. The neck-shaft angles were (134.2 ± 13.7)° 3 days after operation, (128.6 ± 8.9)° 8 weeks after operation, and (128.5 ± 9.3)° after fracture heal ing, showing no significant difference when compared with that of the third day after operation (P gt; 0.05). According to the Radford criterion at last follow-up, the excellent and good rate of hi p function was 93.9% (excellent in 21 cases, good in 10 cases, and poor in 2 cases). Compl ications such as loosening, breakage, or grievous migration of hardware were not observed. Conclusion The adjunctive cancellous screw in treatment of intertrochanteric fractures with DHS fixation can provide counteraction of tension and rotation, promote fixation stabil ity, enhance fracture heal ing and decrease compl ication.