Sanders II-III calcaneal fractures fixed with locking plate in elderly patients / 中华创伤杂志(英文版)

<p><b>PURPOSE</b>To evaluate the clinical outcomes of locking calcaneal plate in treating calcaneal fracture (Sanders II-III) in elderly patients.</p><p><b>METHODS</b>From October 2012 to December 2013, 23 elderly patients suffering from calcaneal fracture (Sanders II-III) were treated and followed up. There were 15 males and 8 females with the mean age of 68.5 years (range: 65-79 years). According to Sander's classification, 16 cases (16 feet) were type II fractures and 7 cases (7 feet) were type III fractures. Anteroposterior, lateral and axial views of X-ray were taken to detect the calcaneum. CT scan was done to assess the amount of comminution and articular depression. Radiological assessment was performed using Bohler's angle and Gissane's angle. Functional outcome was assessed using the Maryland foot score.</p><p><b>RESULTS</b>All the patients were followed up for 13.7 months on average (10-20 months). The mean time of bone union was 3.2 months (3-4 months). The mean time of complete weight bearing was 3.2 months (3.1-4.0 months). The soft tissue necrosis was found in 1 case. The mean Bohler's angle and Gissane's angle were 25.31° and 117.5°respectively. The overall excellent to good rate was 82.6%.</p><p><b>CONCLUSION</b>Open reduction and internal fixation with locking calcaneal plate can obtain good functional outcome for Sanders II-III calcaneal fractures in elderly patients.</p>

Current treatment situation and progress on bone defect of collapsed tibial plateau fractures / 中国骨伤

Characteristics of collapsed tibial plateau fracture determines that the joint surface must remain anatomical reduction,line of force in tibial must exist and internal fixation must be strong. However, while renewing articular surface smoothness, surgeons have a lot of problems in dealing with bone defect under the joint surface. Current materials used for bone defect treatment include three categories: autologous bone, allograft bone and bone substitutes. Some scholars think that autologous bone grafts have a number of drawbacks, such as increasing trauma, prolonged operation time, the limited source, bone area bleeding,continuous pain, local infection and anesthesia,but most scholars believe that the autologous cancellous bone graft is still the golden standard. Allograft bone has the ability of bone conduction, but the existence of immune responses, the possibility of a virus infection, and the limited source of the allograft cannot meet the clinical demands. Likewise, bone substitutes have the problem that osteogenesis does not match with degradation in rates. Clinical doctors can meet the demand of the patient's bone graft according to patient's own situation and economic conditions.

Analyzing risk factors for surgical site infection following Pilon fracture surgery / 中国骨伤

<p><b>OBJECTIVE</b>To study the related risk factors for surgical site infection following Pilon fracture surgery. METH ODS: The data of 561 patients with Pilon fractures treated with open reduction plate osteosynthesis at our institution's trauma centre were collected from January 2006 to December 2012. All the patients were divided into two groups: infection group and non-infection group. In the infection group, there were 23 males and 10 females, ranging in age from 21 to 69 years old, with an average of (45.50±4.40) years old. In the non-infection group, there were 296 males and 232 females, ranging in age from 16 to 76 years old, with an average of (43.50±7.19) years old. The possible risk factors such as age, gender, smoking, diabetes, alcohol abuse, open fractures, compartment syndrome and operative time were studied. The multivariate Logistic regression model was used to analyze the risk, factors.</p><p><b>RESULTS</b>The infection rate of surgical site after Pilon fracture surgery was 5.88%. There were significant statistical differences between infection group and non-infection group in operative time, open fractures and compartment syndrome. However, multivariate Logistic regression analysis revealed that only operative time was significantly associated with surgical site infection (P=0.005, OR=44.92).</p><p><b>CONCLUSION</b>Operation time is an independent predictor for post-operative surgical site infection of Pilon fracture treated with open reduction plate osteosynthesis. Though open fracture and compartment syndrome could increase the surgical site infection rate, they could not not be considered as independent predictors.</p>

Locking compression plate (LCP) combined with minimally invasive percutaneous plate osteosynthesis (MIPPO) for the treatment of Pilon fracture / 中国骨伤

<p><b>OBJECTIVE</b>To summarize clinical outcomes of locking compression plate (LCP) combined with minimally invasive percutaneous plate osteosynthesis (MIPPO) for the treatment of Pilon fracture.</p><p><b>METHODS</b>From January 2009 to December 2012, Pilon fracture patients treated by LCP with MIPPO were retrospectively analyzed. All open fractures, pathologic fractures and those who had limb vascular disease or nerve injury were excluded. Thirty-eight patients were enrolled, including 29 males and 9 females aged from 21 to 78 years old with an average of 48 years old. According to AO classification, 20 cases were type B, 18 cases were type C. Operative time, blood loss, reduction quality, time of fracture healing complications and postoperative ankle joint function were applied for evaluating clinical outcomes, AOFAS scoring were used for assessing postoperative clinical effects.</p><p><b>RESULTS</b>All patients were followed up from 13 to 24 months (averaged 18 months). All patients obtained bone union without any plate failures or loss of fixation/reduction. One patient occurred superficial wound infection, and resolved with antibiotics and local wound care. Postoperative average AOFAS score was 81 (ranged 65 to 97).</p><p><b>CONCLUSION</b>LCP with MIPPO for Pilon fratcure has advantages of less invasion, fewer complications and satisfactory ankle function.</p>

Management of limb fractures in a teaching hospital: comparison between Wenchuan and Yushu earthquakes / 中华创伤杂志(英文版)

<p><b>OBJECTIVE</b>To comparatively analyze the medical records of patients with limb fractures as well as rescue strategy in Wenchuan and Yushu earthquakes so as to provide references for post-earthquake rescue.</p><p><b>METHODS</b>We retrospectively investigated 944 patients sustaining limb fractures, including 891 in Wenchuan earthquake and 53 in Yushu earthquake, who were admitted to West China Hospital (WCH) of Sichuan University.</p><p><b>RESULTS</b>In Wenchuan earthquake, WCH met its three peaks of limb fracture patients influx, on post-earthquake day (PED) 2, 8 and 14 respectively. Between PED 3-14, 585 patients were transferred from WCH to other hospitals outside the Sichuan Province. In Yushu earthquake, the maximum influx of limb fracture patients happened on PED 3, and no one was shifted to other hospitals. Both in Wenchuan and Yushu earthquakes, most limb fractures were caused by blunt strike and crush/burying. In Wenchuan earthquake, there were 396 (396/942, 42.0%) open limb fractures, including 28 Gustilo I, 201 Gustilo II and 167 Gustilo III injuries. But in Yushu earthquake, the incidence of open limb fracture was much lower (6/61, 9.8%). The percent of patients with acute complications in Wenchuan earthquake (167/891, 18.7%) was much higher than that in Yushu earthquake (5/53, 3.8%). In Wenchuan earthquake rescue, 1 018 surgeries were done, composed of debridement in 376, internal fixation in 283, external fixation in 119, and vacuum sealing drainage in 117, etc. While among the 64 surgeries in Yushu earthquake rescue, the internal fixation for limb fracture was mostly adopted. All patients received proper treatment and survived except one who died due to multiple organs failure in Wenchuan earthquake.</p><p><b>CONCLUSION</b>Provision of suitable and sufficient medical care in a catastrophe can only be achieved by construction of sophisticated national disaster medical system, prediction of the injury types and number of injuries, and confirmation of participating hospitals?exact role. Based on the valuable rescue experiences after Wenchuan earthquake, the rescue was faster, more orderly and effective in Yushu earthquake. Nevertheless, there is still a long way to go in the development of a stronger emergent response to the disasters.</p>

A novel potential: the interlayer potential for the fcc (111) plane family.

We propose a novel interlayer potential, which is different from usual interatomic potentials. The interlayer potential represents the interaction between atomic layers in a layered material. Based on the Chen-Möbius inversion method in combination with ab initio calculations, the interlayer interactions are obtained for the face centered cubic (fcc) (111) planes. In order to check the validity of our interlayer potential, we calculate the intrinsic stacking fault energy (γ(sf)) and the surface energy (γ(s)) of five metals: Al, Ni, Cu, Ag and Au. The predicted γ(sf) and γ(s) values are compared with the theoretical results obtained from direct calculations and also with the available experimental data. Using the interlayer potentials, we also investigate the phonon dispersion and phonon density of state in the fcc (111) plane family of the considered metals.

Screen and identification of the relative protein expressed in the acute tractive spinal cord injury in rats / 中华外科杂志

<p><b>OBJECTIVE</b>To screen and identify the relative protein expressed in the acute tractive spinal cord injury (TSCI) in rats.</p><p><b>METHODS</b>Ten adult Sprague Dawley rats were randomly divided into Sham group and TSCI group, 5 rats in each group. Rats from Sham group and TSCI group at 1 day after surgery were sacrificed for harvesting T₁₃-L₂ spinal tissue specimens. The extraction and quantitation of protein in the spinal tissue was finished firstly. Proteins from spinal tissue were separated by two-dimensional electrophoresis (2-DE) and identified by mass spectrometry (MS). The different expression map was established in each group, and proteins express differently was determined by comparing the level of each spot with gel imaging software and manually. Proteins were identified by High performance liquid chromatography-electrospray tandem (NanoUPLC-ESI-MS/MS) and peptide sequence tag with tandem MS combining with database respectively. After that, the function of these identified proteins was known and classified.</p><p><b>RESULTS</b>There were 22 differential protein expression spots were found between Sham group and TSCI group. Among them, 18 spots were up-regulated and 4 were down-regulated. 4 differential protein expression spots were newly found in TSCI group. Sixteen significant proteins were identified by NanoUPLC-ESI-MS/MS. Four kind of proteins were related to apoptosis, 3 in nerve signal transduction and 6 in metabolism, respectively. Unnamed proteins were 3.</p><p><b>CONCLUSIONS</b>The differential expression proteins were found between Sham group and TSCI group. These identified proteins may play important role in the process of injury and recovery through transduction nerve signal, regulating nerve cells apoptosis and metabolism.</p>

Timing of internal fixation and effect on Schatzker IV-VI tibial plateau fractures / 中华创伤杂志(英文版)

<p><b>OBJECTIVE</b>To study the effect of internal fixation performed at different times on therapeutic outcomes of Schatzker IV-VI tibial plateau fractures.</p><p><b>METHODS</b>The clinical data of 42 cases of Schatzker IV-VI tibial plateau fractures treated in our department were analyzed retrospectively. Among these 42 patients, 21 received surgical treatment within 12 h after injury (Group I), the other 21 were first treated by traction or plaster fixation followed by a delayed internal fixation after soft tissue swelling subsided (Group II). The surgical time, complications, length of hospital stay, cost of hospitalization, and time for fracture union, as well as functional recovery were analyzed and compared between the two groups.</p><p><b>RESULTS</b>After 10-28 months follow-up (mean 16.5 months), except 5 cases who lost to follow-up, no differences were found between the two groups regarding surgical time, preoperative and postoperative complications, healing time or the Hospital for Special Surgery (HSS) score at the end of follow-up, but significant differences were found in the length of hospital stay, cost of hospitalization and HSS score at 3 months after operation (P less than 0.05).</p><p><b>CONCLUSION</b>Under certain conditions, early internal fixation for Schatzker IV-VI tibial plateau fracture is feasible, which can shorten the length of hospital stay, decrease the cost of hospitalization and promote early functional rehabilitation.</p>

Case-control study on therapeutic effects of surgery for the treatment of complex acetabular fractures and effect of waiting time for surgery on clinical results / 中国骨伤

<p><b>OBJECTIVE</b>To discuss the operative effects and evaluate how the waiting time before surgery influence the outcome of complex acetabular fractures.</p><p><b>METHODS</b>From January 2006 to December 2008, 33 patients, 28 males and 5 females, with complex acetabular fractures were operated in our hospital. All of them were followed up for an average 24 months (ranged, 14 to 47 months). The average age was 42 years (ranged,27 to 57 years). According to the waiting time before surgery, all patients were divided into two groups, namely preoperative waiting time of more than 14 days group and preoperative waiting time of less than 14 days group. Postoperative reduction quality and long-term radiographic results were evaluated according to the Matta radiological systems. The modified Merle d' Aubigne-postel hip scoring system was used for evaluating the functional outcomes. The Mos SF-36 was used to evaluate the quality of life.</p><p><b>RESULTS</b>Anatomical reduction in 28 cases, good in 4 cases, and poor in 1 case. According to the mean Merle d'Aubigne and Postel Score, 22 patients got excellent result, 4 good, 4 fair and 3 bad. Average score of the Mos SF-36 was (70.63 +/- 17.03). When time was measured as a categorical variable, an anatomical reduction and an excellent or good functional outcome were more likely if surgery was performed within 14 days. Postoperative complications: iatrogenic injuries of sciatic nerve in 2 cases, heterotopic ossification in 6 cases,traumatic osteoarthritis in 3 cases, and femoral head necrosis in 1 case.</p><p><b>CONCLUSION</b>Good image evaluation,correct approaches, appropriate time before surgery and approach, early functional rehabilitation are essential for better outcomes in the treatment of complex acetabular fractures, of which, time to surgery is a crucial and controllable prognostic factor.</p>

Density functional study of CO adsorbed on MnN (N = 2-8) clusters.

The geometry, electronic structure, magnetism, and adsorption properties of one CO molecule on the Mn(N) (N = 2-8) clusters have been investigated based on the density functional theory (DFT) with the spin polarized generalized gradient approximation. It is found that the CO molecule adsorbs on the atop site for N = 2, 4, 7, 8 and on the bridge site for N = 3, 5, 6. The results of the calculated second-order energy differences of bare Mn(N) cluster indicate that the Mn(3), Mn(6), and Mn(8) clusters have relatively low stability. However, their corresponding CO complexes possess high adsorption ability implied by the C-O bond length, vibrational frequency, adsorption energy, and the charge transfer between the CO molecule and the clusters. Compared with bare Mn clusters, the adsorbing of a CO molecule enhances the magnetic moments of the Mn(N) clusters for N = 4, 6-8.

Treatment for 332 cases of lower leg fracture in "5.12" Wenchuan earthquake / 中华创伤杂志(英文版)

<p><b>OBJECTIVE</b>To retrospectively analyze the medical treatment of 332 patients with lower leg fracture in Wenchuan earthquake admitted in West China Hospital.</p><p><b>METHODS</b>From May 12, 2008 to June 15, 2008, 332 patients with lower leg fracture injured in Wenchuan earthquake were treated in our hospital. The data on trauma condition and clinical treatment were collected and analyzed.</p><p><b>RESULTS</b>Among the 332 cases of lower leg fracture, there were 179 cases of open fracture, accounting for 53.9%, in which 91% belonged to Gustilo II or III injury with serious pollution. Many patients had posttraumatic complications, vascular and nerve injury, wound infection or osteofascial compartment syndrome. After medical treatment, blood vessels were reconnected, wound surface was repaired and wound infection was under control.</p><p><b>CONCLUSION</b>For the patients with lower leg fracture in earthquake, we followed the principle of "complete debridement - restoring the continuity of bone bracket-timely recovering blood supply of limbs and repairing nerve damage - repair the wound surface at stage I or II " so as to reduce the incidence of amputation and infection.</p>

Treatment of subtrochanteric femoral fracture with long proximal femoral nail antirotation / 中华创伤杂志(英文版)

<p><b>OBJECTIVE</b>Subtrochanteric femoral fractures are severe injuries. Although many treatment methods have been developed, controversy exists regarding the optimal management of these fractures. This study evaluated the clinical outcome of subtrochanteric femoral fractures fixed with long proximal femoral nail antirotation (PFNA-long).</p><p><b>METHODS</b>Between October 2006 and February 2008, 25 patients with traumatic subtrochanteric fractures of the femur were treated with PFNA-long. Closed reduction and fixation were performed in 20 cases. In the remaining 5 cases, closed reduction was difficult, so limited open reduction was performed, with bone grafting in 4 cases and circumferential wiring in 4 cases.</p><p><b>RESULTS</b>The average follow-up time was 16.1 months. All subtrochanteric femoral fractures healed uneventfully except one case of delayed union. The mean union time was 26.2 weeks. Technical difficulties with nail insertion were encountered in 3 cases. No implant failure was observed.</p><p><b>CONCLUSION</b>PFNA-long is effective in treatment of subtrochanteric femoral fractures, with a high rate of bone union, minor soft tissue damage, early return to functional exercise and few implant-related complications.</p>

Preliminary effect of proximal femoral nail antirotation on emergency treatment of senile patients with intertrochanteric fracture / 中华创伤杂志(英文版)

<p><b>OBJECTIVE</b>To retrospectively analyse the clinical outcome of emergency treatment of senile intertrochanteric fractures with proximal femoral nail antirotation (PFNA).</p><p><b>METHODS</b>From September 2008 to March 2009, 35 senile patients with intertrochanteric fracture, aged from 65 to 92 years with an average age of 76.5 years, were treated with PFNA within 24 hours after injury. There were 10 type I fractures, 19 type II and 6 type III according to upgraded Evans-Jensen classification system. All patients were complicated with osteoporosis, and 19 patients had preexisting internal medical diseases. According to the rating scale of disease severity by the American Society of Anesthesiologists (ASA), there were 9 grade I, 14 grade II, 8 grade III, and 4 grade IV.</p><p><b>RESULTS</b>The duration for operation ranged from 45 to 73 minutes with an average of 57.6 minutes. The volume of blood loss during operation ranged from 50 to 120 ml with an average of 77.5 ml. Patients could ambulate 2-4 days after operation (mean 3.5 days). Hospital stay was 4-7 days (mean 5.3 days). Full weight bearing time was 10-14 weeks (mean 12.8 weeks). During hospitalization period, there was no regional or deep infection, hypostatic pneumonia, urinary tract infection and bedsore except for 2 cases of urine retention. All cases were followed up with an average period of 12.3 months, and bone healing achieved within 15-18 weeks (mean 16.6 weeks). No complications such as delayed union, coxa vara or coxa valga, screw breakage or backout occurred and only 2 cases had trochanter bursitis because of thin body and overlong end of the antirotated nail. According to the Harris grading scale, the results were defined as excellent in 21 cases, good in 9 cases and fair in 5 cases, with the excellent and good rates of 85.7%.</p><p><b>CONCLUSION</b>The emergency treatment of senile intertrochanteric fracture with proximal femoral nail antirotation has the advantages of minimal invasion, easy manipulation, less blood loss, shorter length of stay, less complications, and the preliminary clinical effect is satisfactory.</p>

A medium-term analysis on of therapeutic effects of locking proximal humerus plate for the treatment of comminuted fractures of proximal humerus / 中国骨伤

<p><b>OBJECTIVE</b>To investigate the medium-term curative effects of locking proximal humerus plate for the treatment of comminuted fractures of proximal humerus, and provide evidences for the clinical practice.</p><p><b>METHODS</b>From August 2005 and April 2008, 23 patients with comminuted fractures of proximal humerus were treated with locking plates, including 12 males and 11 females, aged 27 to 76 years old (averaged 51.5 years old). There were 18 cases of traffic accident injuries, 4 cases of falls injuries, and 1 case injured after heavy pressure. According to Neer classification, 11 cases were three-part fractures, and 12 cases were four-part fractures. Outcomes were assessed with radiography and the Constant-Murley (C-M) shoulder evaluation.</p><p><b>RESULTS</b>All the patients got primary healing of incisions. Twenty-three patients were followed up, and the duration ranged from 17 to 49 months, with an average of 35.25 months. Twenty patients had fracture healing during 4 to 7 months after operation. There was no significant differences among 3, 6 and 12 months after operation in C-M scoring. The average C-M score was (79.85 +/- 17.23) points (38 to 100 points) at the 12th month after operation, 8 cases got an excellent result, 8 good, 5 fair, and 2 poor. In the LPHP plus bone graft group 6 cases got an excellent result, 4 good, 3 fair, and 1 poor; in LPHP fixation group 2 excellent, 4 good, 2 fair,and 1 poor.</p><p><b>CONCLUSION</b>The medium-term curative effect of the locking proximal humerus plate in the treatment of proximal humeral fractures is significant. For the comminuted fractures of proximal humerus combined with osteoporosis and bone defects, bone graft should be performed routinely.</p>

The competition of double-, four-, and three-ring tubular B(3n) (n = 8-32) nanoclusters.

The geometry and electronic properties of three-ring tubular B(3n) clusters (n = 8-32) are studied systematically with the density functional theory. It is composed of three staggered rings with the diameter of the middle ring larger than those of the two outer rings. With the increase in boron atom numbers, the three-ring tubular clusters are energetically more stable than the double-ring and four-ring tubular clusters and the buckled sheet clusters with hexagon holes. The average binding energy tends to the finite value. The stability is further analyzed through the natural bond orbital population analysis. The highest occupied and lowest unoccupied energy gaps become small, which demonstrates a favorable metallic property.

Appling the abdominal aortic-balloon occluding combine with blood pressure sensor of dorsal artery of foot to control bleeding during the pelvic and sacrum tumors surgery.

BACKGROUND AND OBJECTIVES: To investigate the feasibilities of reducing intraoperative hemorrhage and improving the safety of pelvic and sacrum tumor surgery using sizing balloon occluding abdominal aorta. METHOD: From May 2001 to May 2007, 18 patients were diagnosed as sacrum or pelvic tumor and underwent surgery in our institution. Balloon catheters were placed via femoral artery to occlude the abdominal aorta of pelvic tumor and sacrum region undergoing the sacrum resection or half pelvis resection and replacement operation in 12 patients. A sizing balloon was used to occlude the abdominal aorta for 60 min in assisting with resection of pelvic and sacral tumors. RESULTS: After the abdominal aorta was occluded, much less intraoperative hemorrhage was found, and the average blood loss was only 280 ml (range 200-600 ml). This procedure assisted the surgeon in identifying clearly the surgical margin and neurovascular structure surrounded by the tumors. The blood pressure remained stable during the operation. And the function of the kidney, the pelvis organs and the lower extremities were normal. CONCLUSION: Intraoperative abdominal aorta occluding may effectively control intraoperative hemorrhage, thus assisting the surgeon in the complete and safe resection of pelvic and sacrum tumors.

No quenching of magnetic moment for the GenCo (n=1-13) clusters: first-principles calculations.

The authors predict that for the Ge(n)Co (n=1-13) clusters the magnetic moment does not quench, which is dark contrast to the previous results with transition-metal-doped Si(n) clusters. It may be due to the unpaired electrons of the Co atom in the clusters. For the ground state structures of the Ge(n)Co (n>or=9) clusters, the Co atom completely falls into the center of the Ge outer frame, forming metal-encapsulated Ge(n) cages. The doping of the Co atom enhances the stability of the host Ge(n) clusters. The Ge(10)Co cluster with the bicapped tetragonal antiprism structure is more stable than others, which agrees very well with the results of the experiment of the Co/Ge binary clusters by the laser vaporization.

Analysis of patients with bone injury in Wenchuan earthquake / 中华外科杂志

<p><b>OBJECTIVE</b>To evaluate the patients with bone injury in Wenchuan earthquake.</p><p><b>METHODS</b>From May 12th to June 15th 2008 the data of 1410 patients with bone injury in Wenchuan earthquake were analyzed to evaluate clinical intervention and remedy-managing experience.</p><p><b>RESULTS</b>The 1410 patients average age was from 4 to 103 years old. And 744 cases (52.7%) suffered from blunt injuries, 379 cases (26.9%) from buried injuries, 287 cases (20.4%) from falling injuries; And 1317 cases were with fracture, 93 with limbs soft tissue injuries; 261 patients combined with other parts of injuries including 45 cases with paralysis; 66 cases were with crush syndrome, 25 with gas gangrene, 76 with acute kidney failure, 26 with multiple organ failure. And 912 operations were performed including 402 fracture fixation, 224 debridement, 152 debridement and suture, 85 amputation, 29 implant skin, 8 fixation of joint dislocation, 5 surgical flaps transplantation, 4 nerve and tendon suture, 2 arthroscopes, 1 joint replacement. Among the 66 crush syndrome patients, 49 accepted continuous renal replacement therapy, in which 9 cases were bleeding from named arteries and 20 blood vessels were getting embolism. Among the 1410 cases, 1 died from multiple organ failure.</p><p><b>CONCLUSIONS</b>Among the patients with bone injury in Wenchuan earthquake, the elderly patients are more than the youth; The injuries are always combined with other complications; Opened injuries are polluted severely; It is difficult to deal with the crush syndrome; Paraplegia cases are less, but the amputees are more.</p>

The crush syndrome patients combined with kidney failure after Wenchuan earthquake / 中华外科杂志

<p><b>OBJECTIVE</b>To retrospectively analysis the treatment characteristics of the systemic situation in patients with crush syndrome after Wenchuan earthquake happened in May 12th, 2008.</p><p><b>METHODS</b>Forty-nine patients with crush syndrome and subsequent acute renal failure (ARF) due to the earthquake were treated in West China Hospital. All of patients had been rescued from buildings that collapsed in Wenchuan earthquake. The major associated injuries were in the low extremities and upper extremities. 49 patients developed ARF with increased concentrations of serum creatinine (mean 64 022 U/L) had underwent haemodialysis. Hyperkalaemia was seen in 9 patients and four of them underwent haemodialysis. 49 patients were administered hemodialysis.</p><p><b>RESULTS</b>No patient died. All patients who suffered from the ARF were weaned from hemodialysis after admitted 7 to 35 days. Forty-five extremities underwent amputations and 52 extremities had fasciotomy.</p><p><b>CONCLUSIONS</b>Crush syndrome requires urgent recognition and prompt surgical treatment with simultaneous measures to control hyperkalemia and ARF. The authors believe that immediate intensive care therapy and multi-subjective coordination would have improved the survival rate.</p>

Correlative factors influencing acetabular fracture associated with femoral nerve injury / 中华创伤杂志

Objective To improve the effect of clinical diagnosis and treatment of acetabular fracture with a femoral nerve injury by analyzing the causes of femoral nerve injury following acetabular fractures.Methods From January 1996 to November 2004,146 cases of acetabular fractures were treated operatively.Six cases of them were complicated with femoral nerve injury.The causes of femoral nerve injury were analyzed on the basis of clinical manifestations,CT scan and 3-dimensional reconstruc- tion.All the cases were classified according to Letournel and Judet classification.Three cases had hema- toma compression (2 cases with double column fractures and 1 with transverse-posterior wall fractures);2 cases had femoral nerve injury caused by fracture fragments (1 case with anterior wall fracture following anterior hip dislocation,the another with old fracture of anterior column combined with fracture of superior ramus of pubis);and one case had anterior column fracture combined with fracture of wing of ilium,and the femoral nerve was injured by traction in operation.Clearance of hematoma,nerve tract decompression and epineuria solution were performed in 5 cases,and 1 case was treated conservatively.Results The average follow-up period was 1.8 years(ranging from 1 to 3 years).The muscle power of quadriceps fem- oris recovered from 1-2 grade before operation to 4-5 grade after operation in 5 cases.The function of ex- tensor knee and gait was normal.The function of sensory completely recovered in 4 cases.One case was followed up for 2 years,which showed the patient still suffered from hypoesthesia in the lower 2/3 of the thigh and the medial of the leg.One ease of traction injury was followed up for 1.2 years,showing the muscle power recovered to normal,but still presented with sensory disability.Conclusion Acetabular fractures associated with femoral nerve injury are rare.For complex acetabular fractures and severe trau- ma,attention should be given to the possibility of femoral nerve injury.Fragment stabbing and compres- sion of hematoma around iliopsoas muscle are the common causes of femoral nerve injury following ace- tabular fractures.Iatrogenic injury should not be ignored.