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find Keyword "Reconstruction" 127 results
  • STUDYONTHEROLEOFTHEPROFUNDAFEMORISINTHETREATMENTOFTHELOWERISCHEMICLIMBS

    FromApril1990toDecember1996,15patientswithaortoiliofemoralorfemoralatheroscleroticocclusivediseaseweretreatedwithaortoprofundabypassgrafting:5patientswereperformedwithprofundoplasty;2patientsweretreatedwithprofundapoplitealarterybypass.Theexcellentresultsofthe19patientswereconfirmedafterameanfollowupperiodof24.5months.Twopatientshadimprovementafteroperation.Amputationwasperformedinonelimbafter6monthsofoperationbecauseofsevereinflammation.Theauthorsconsideredthattheprofundafemoralarteryplaysanimportantroleinaortofemoralarteryreconstruction.Itisagoodinfloworoutflowprovidingarterialbloodtoseverelyischemiclegswithocclusionofaortoiliosuperficial,iliosuperficialorsuperficialfemoralarteries.

    Release date:2016-08-29 03:18 Export PDF Favorites Scan
  • Right Ventricular Outflow Tract Reconstruction with Valved Bovine Jugular Vein Patch in Patients with Complex Congenital Heart Disease

    Objective To evaluate early results of valved bovine jugular vein patch for reconstruction of the right ventricular outflow tract (RVOT).?Methods From May 2009 to March 2010, a total of 60 patients with complex congenital heart diseases underwent reconstruction of RVOT with valved bovine jugular vein patch in Wuhan Asia Heart Hospital. There were 42 males and 18 females with their mean age of 6.2±8.9 years (ranging from 5 months to 33 years) and mean body weight of 27.5±24.0 kg, and 34 patients were less than 1 year. Preoperative clinical diagnosis included tetralogy of Fallot (n=38) and double outlet of right ventricle with pulmonary stenosis (n=22). All the patients underwent one-stage surgical repair. Before operation, 4 patients underwent catheter intervention for their major aortopulmonary collaterals. The diameters of pulmonary arterial ring of all the patients were 2 standard deviation less than normal range, and trans-annular patch was chosen for RVOT reconstruction. All the patients were postoperatively followed up for 18 to 26 months (mean 21.2±4.6 months).?Results There was no in-hospital death. And no second surgical intervention was needed for conspicuous RVOT stenosis or pulmonary regurgitation. Three patients needed reintubation for lung edema after extubation as a result of major aortopulmonary collaterals. Four patients underwent reexploration for postoperative bleeding. And all the other patients were discharged uneventfully. Mean cardiopulmonary bypass time was 84.0±22.0 min, and mean aortic cross-clamping time was 42.0±12.0 min. Mean RVOT gradient right after surgery was 18.0±4.5 mm Hg, which was not statistically different from mean RVOT gradient of 19.2±5.4 mm Hg measured by transthoracic echocardiography at their last postoperative follow-up(P>0.05). The degree of pulmonary regurgitation right after surgery was trivial in 32 patients(1+), mild in 28 patients(2+), which were not statistically different from the degree of pulmonary regurgitation at their last postoperative follow-up: trivial in 28 patients (1+), mild in 27 patients(2+), and moderate in 5 patients(3+). Calcification was not observed on the valved bovine jugular vein patch and valve cusp, and the valve cusp motioned well. No thrombosis or endocarditis was observed on the valved bovine jugular vein.?Conclusions For patients with tetralogy of Fallot or double outlet of right ventricle (DORV) and pulmonary stenosis, valved bovine jugular vein patch is a good choice for trans-annular reconstruction of RVOT. There is no severe postoperative complication related to bovine jugular vein, the RVOT pressure gradient does not increase significantly, and anti-regurgitation result is satisfactory in short-term follow-up. Further follow-up is required to evaluate its long-term outcome.

    Release date:2016-08-30 05:50 Export PDF Favorites Scan
  • A BIOMECHANICAL STUDY ON INTERNAL FIXATION OF PROXIMAL ULNA COMBINED WITH OLECRANON FRACTURE

    Objective To compare the biomechanical stability of Kirschner wire and tension band wiring, reconstruction plate combined with tension band wiring, and olecranon anatomical plate in fixing proximal ulna combined with olecranon fracture, so as to provide the theoretical evidence for clinical selection of internal fixation. Methods Eight specimens of elbow joints and ligaments were taken from eight fresh male adult cadaveric elbows (aged 26-43 years, mean 34.8 years) donated voluntarily. The model of proximal ulna combined with olecranon fracture was made by an osteotomy in each specimen. Fracture end was fixed successively by Kirschner wire and tension band wiring (group A), reconstruction plate combined with tension band wiring (group B), and olecranon anatomical plate (group C), respectively. The biomechanical test was performed for monopodium compression experiments, and load-displacement curves were obtained. The stability of the fixation was evaluated according to the load value when the compression displacement of fracture segment was 2 mm. Results No Kirschner wire withdrawal, broken plate and screw, loosening and specimens destruction were observed. The load-displacement curves of 3 groups showed that the displacement increased gradually with increasing load, while the curve slope of groups B and C was significantly higher than that of group A. When the compression displacement was 2 mm, the load values of groups A, B, and C were (218.6 ± 66.9), (560.3 ± 116.1), and (577.2 ± 137.6) N, respectively; the load values of groups B and C were significantly higher than that of group A (P lt; 0.05), but no significant difference was observed between groups B and C (t=0.305, P=0.763). Conclusion The proximal ulna combined with olecranon fracture is unstable. Reconstruction plate combined with tension band wiring and olecranon anatomical plate can meet the requirement of fracture fixation, so they are favorable options for proximal ulna combined with olecranon fracture. Kirschner wire and tension band wiring is not a stable fixation, therefore, it should not be only used for proximal ulna combined with olecranon fracture.

    Release date:2016-08-31 04:21 Export PDF Favorites Scan
  • ARTHROSCOPIC RECONSTRUCTION OF MEDIAL PATELLOFEMORAL LIGAMENT WITH HAMSTRING TENDON AUTOGRAFTS FOR TREATMENT OF RECURRENT PATELLAR DISLOCATION

    Objective To investigate the effectiveness of reconstructing medial patellofemoral l igament with hamstring tendon autografts for the treatment of recurrent patellar dislocation under arthroscopy. Methods Between January 2005 and January 2010, 22 cases of recurrent patellar dislocation were treated by lateral retinacular release and reconstructionof the medial patellofemoral ligament with hamstring tendon autografts under arthroscopy. There were 5 males and 17 females, aged 15-19 years (mean, 17.3 years). The average number of dislocation was 4 (range, 3-8). The main cl inical symptoms were pain and swell ing of knee joint, weakness in the leg, and limited range of motion (ROM). The patellar tilt test, pressing pain of patellofemoral ligament insertion, and apprehension sign showed positive results. According to International Knee Documentation Committee (IKDC) scoring criteria, the subjective IKDC score was 36.7 ± 4.7, and the Lysholm score was 69.3 ± 3.8. X-ray films showed that the patella inclined outwards. Results All incisions healed by first intention. Twenty-two cases were followed up 18-49 months (mean, 34 months). Pain and swelling of knee joint and weakness were improved obviously. No recurrence was found during follow-up. The ROM of knee in flexion and extension was improved when compared with preoperative ROM. The subjective IKDC score was 92.4 ± 5.3 and the Lysholm knee score was 91.7 ± 5.2, showing significant differences when compared with preoperative scores (P lt; 0.05). Conclusion Reconstruction of the medial patellofemoral ligament with hamstring tendon autografts under arthroscopy is an effective method to treat recurrent patellar dislocation.

    Release date:2016-08-31 04:23 Export PDF Favorites Scan
  • RHEUMATOID FOREFOOT RECONSTRUCTION WITH FIRST METATARSOPHALANGEAL FUSION AND ARTHROPLASTY OF LESSER METATARSAL HEADS

    Objective To evaluate the surgical treatment and effectiveness of rheumatoid forefoot reconstruction with arthrodesis of the first metatarsophalangeal joint and arthroplasty of lesser metatarsal heads. Methods Between January 2007 and August 2009, 7 patients with rheumatoid forefoot were treated by reconstruction with arthrodesis of the first metatarsophalangeal joint and arthroplasty of lesser metatarsal heads. They were all females with an average age of 62 years (range, 56-71 years) and with an average disease duration of 16 years (range, 5-30 years). All patients manifested hallux valgus, hammer toe or mallet toe of 2-5 toes, 5 feet complicated by subluxation of the second metatarsophalangeal joint. The improved American Orthopaedic Foot amp; Ankle Society (AOFAS) score was 36.9 ± 6.4. The hallux valgus angle was (46 ± 5)°, and the intermetarsal angle was (12 ± 2)° by measuring the load bearing X-ray films preoperatively. Results All incisions healed by first intention after operation. The X-ray films showed bone fusion of the first metatarsophalangeal joint at 3-4 months after operation. Seven patients were followed up 2.9 years on average (range, 2-4 years), gait was improved and pain was rel ieved. The hallux valgus angle decreased to (17 ± 4)° and the intermetarsal angle was (11 ± 2)° at 3 months postoperatively, showing significant differences when compared with preoperative values (P lt; 0.05). The improved AOFAS score was 85.3 ± 5.1 at 2 years postoperatively, showing significant difference when compared with preoperative score (t=4.501, P=0.001). One patient had recurrent metatarsalgia at 4 years after operation. Conclusion Arthrodesis of the first metatarsophalangeal joint and arthroplasty of lesser metatarsal heads for rheumatoid forefoot reconstruction can correct hallux valgus, remodel the bearing surface of the forefoot, and rel ieve pain, so it can be considered as a procedure that provides improvement in the cl inical outcome.

    Release date:2016-08-31 04:23 Export PDF Favorites Scan
  • DOUBLE VOLUME INTERNAL FIXATION FOR CORRECTION OF ADULT POST-TRAUMATIC CUBITUS VARUS

    Objective Supracondylar closing wedge osteotomy is a standard operation for the management of post-traumatic cubitus varus deformity. There are many fixation methods for the broken ends of bone. However, most of these fixation methods are fraught with various complications. To evaluate the methods and functional results of double volume internal fixation for correction of adult post-traumatic cubitus varus deformity. Methods The cl inical data were retrospectively reviewed, from 22 cases of adults post-traumatic cubitus varus deformity between June 2007 and December 2010.There were 16 males and 6 females, aged 18-29 years (mean, 21 years) and they all had a history of supracondylar fracture. The deformities of cubitus varus appeared at 6 months (range, 3 months to 1 year) after fracture, and the operations were carried out at 4-17 years (mean, 8 years) after deformity occurrence. The valgus angle were 16-25° (mean, 20.6°) and the Flynn functional scores were all poor before operation. Supracondylar closing wedge osteotomies were performed. Two reconstruction plates were moulded and placed to the media and lateral volumes of the humerus to fix the broken ends of the osteotomy surfaces. External fixation was not needed and early rehabil itation was performed postoperatively in all cases. Results Incisions healed by first intention. All cases were followed up 6 to 24 months (mean, 13 months). At last follow-up, the valgus angle was 0-10° (mean, 7.5°). All cases got bone union at 8-13 weeks (mean, 10 weeks) after operation. No related complications occurred, such as infection, nervous or vein injury, and loosening or breakage of internal fixator; and no cubitus varus recurred. The Flynn scores were excellent in 17 cases, good in 3 cases, and fair in 2 cases; the excellent and good rate was 91%. Conclusion The operation of supracondylar osteotomy with double plates internal fixation for the correction of adult post-traumatic cubitus varus deformity can rigidly stabil ize distal humerus, which is helpful to functional training just after operation and satisfactory restoration of the elbow function.

    Release date:2016-08-31 04:23 Export PDF Favorites Scan
  • COMPARISON OF PROXIMAL FEMORAL NAIL ANTIROTATION AND RECONSTRUCTION NAIL FOR IPSILATERAL FRACTURES OF HIP AND FEMORAL SHAFT

    Objective To compare the effectiveness of proximal femoral nail antirotation (PFNA) and reconstruction nail with minimally invasive technique for ipsilateral femoral shaft and extracapsular hip fractures in young and middle-aged patients. Methods Sixty-nine young and middle-aged patients with ipsilateral femoral shaft and extracapsular hip fractures were treated between January 2000 and August 2010, and their data were analyzed retrospectively. Of them, fractures were fixed by reconstruction nail in 44 cases (reconstruction nail group) and by PFNA in 25 cases (PFNA group). There was no significant difference in gender, age, weight, injury cause, fracture type, or disease duration between 2 groups (P gt; 0.05). The operation time, blood loss, fracture healing time, complications, and functional outcomes were compared between 2 groups to evaluate the effectiveness. Results The operation time and blood loss in the PFNA group were significantly less than those in the reconstruction nail group (P lt; 0.05). The follow-up time was 12-38 months (mean, 20 months ) in the PFNA group and was 12-48 months (mean, 22 months) in the reconstruction nail group. No complication occurred as follows in 2 groups: wound infection, deep venous thrombosis, pulmonary embolism, breakage of the implants, avascular necrosis of the femoral head, or serious rotation and shortening deformity of lower limbs. In the PFNA group and the reconstruction nail group, 1 patient underwent technical difficulty in nail implant and 7 patients underwent technical difficulty in proximal locking screw, respectively; 3 patients and 6 patients had intra-operative iatrogenic fracture of femoral shaft, respectively; and delayed union of femoral shaft was observed in 1 patient and 2 patients, respectively. The complication rate was 20% (5/25) in the PFNA group and 34% (15/44) in the reconstruction nail group, showing no significant difference (χ2=1.538, P=0.215). No significant difference was found in fracture healing time between 2 groups (P gt; 0.05). At last follow-up, there was no significant difference in Harris hip score and Evanich knee score between 2 groups (P gt; 0.05). Conclusion PFNA or reconstruction nail with minimally invasive technique is a good method to treat ipsilateral femoral shaft and extracapsular hip fractures, but the PFNA is superior to the reconstruction nail because of simple operation.

    Release date:2016-08-31 04:24 Export PDF Favorites Scan
  • TREATMENT OF PROXIMAL ULNA AND OLECRANON FRACTURES BY RECONSTRUCTION PLATE COMBINED WITH TENSION BAND WIRING

    Objective To review the efficacy of reconstruction plate combined with tension band wiring for treating proximal ulna and olecranon fractures. Methods Between November 2004 and September 2009, 10 patients with proximal ulna and olecranon fractures were treated by reconstruction plate combined with tension band wiring. There were 6 males and4 females with an average age of 45.3 years (range, 21-75 years). Five fractures were caused by traffic accident, 2 by fall ing from height, 2 by tumbl ing, and 1 by a machine strangulation. The locations were the left side and the right side in 5 cases respectively. One case was open fracture (Gustilo II) and the other 9 were closed fractures. Olecranon fractures included 4 cases of traverse fractures and 6 cases of comminuted fractures, and proximal ulna fractures included 6 cases of comminuted fractures and 4 cases of obl ique fractures. The combined fractures included 6 radial head fractures, 4 coronoid process fractures, 2 proximal humerus fractures, and 3 scapula fractures; other injury included 1 elbow dislocation and 1 shoulder dislocation. Two patients had secondary operation; the other 8 patients received the primary operations and the time from injury to operation varied from 7 days to 20 days, with an average of 11 days. Results One case had infection at the incision 1 week after operation, and recovered after 2 months of antibiotics and debridement; incisions healed by first intention in other 9 patients. All patients were followed up 12-64 months (mean, 40.5 months). The X-ray films showed that fracture heal ing was achieved at 10-24 weeks (mean, 12 weeks). There was no ulnar nerve symptom in all cases. Heterotopic ossification occurred in 1 case at 2 months and stiffness of the elbow in 1 case at 3 months after operation; they were both cured after symptomatic treatment. Proximal migration of Kirschner wires was found in 1 case at 6 months after operation, whose implants were taken out at 9 months after the first operation because fracture had healed. At last follow-up, the flexion and extension arc of the elbow averaged 92.8°(range, 23-130°), and the arc of forearm rotation averaged 124.4° (range, 42-175°). According to the American Hospital for Special Surgery (HSS) evaluation method, the results were classified as excellent in 6 cases, good in 2, fair in 1, and poor in 1. Conclusion Treating proximal ulna and olecranon fractures by reconstruction plate combined with tension band wiring allows patients to do postoperative exercise early and could effectively avoid compl ications.

    Release date:2016-08-31 05:41 Export PDF Favorites Scan
  • RECONSTRUCTION OF FULL-THICKNESS CHEST WALL DEFECTS

    Objective To investigate the surgical techniques and effectiveness for reconstruction of severe full-thickness chest wall defects. Methods Between January 2006 and December 2010, 14 patients with full-thickness chest wall defects were treated, including 12 cases caused by giant chest wall mal ignant tumor excision, 1 case by thermocompression injury, and 1 case by radiation necrosis. There were 8 males and 6 females with an average age of 42 years (range,23-65 years). The size of chest wall defects ranged from 8 cm × 5 cm to 26 cm × 14 cm. All patients compl icated by rib defect (1-5 ribs), and 3 cases by sternum defect. Thoracic skeleton reconstruction was performed with Vicryl mesh or polytetrafluroethylene mesh in 10 patients. Other 4 patients did not undergo thoracic skeleton reconstruction. The bilobed skin flaps, pectoral is major myocutaneous flap, latissimus dorsi myocutaneous flap, and rectus abdominis myocutaneous flap were util ized for repairing soft tissue defects. The size of the dissected flaps ranged from 10 cm × 7 cm to 25 cm × 13 cm. The donor sites were sutured directly or were repaired by free skin graft. Results Poor heal ing of incision occurred in 2 cases, which was cured after debridement, myocutaneous flap transfer, and skin graft. The other wounds healed by first intention. All patients were followed up 6-36 months (mean, 8 months). No tumor recurrence during follow-up, except 1 patient with osteosarcoma who died of l iver matastasis at 6 months after operation. Transient sl ight paradoxical respiration occurred in 1 patient who did not undergo thoracic skeleton reconstruction at 5 days after operation. Integrity of chest wall in other patients was restored without paradoxical respiration and dyspnea. Conclusion Depending on the cause, the size, and the location of defect, single or combination flaps could be used to repair soft tissue defect, and thoracic skeleton reconstruction should be performed when defect is severe by means of syntheticmaterials.

    Release date:2016-08-31 05:42 Export PDF Favorites Scan
  • TREATMENT OF DISCOID MENISCUS TEAR WITH MENISCAL ALLOGRAFT

    Objective To investigate the effectiveness of meniscal allograft in treatment of discoid meniscus tear. Methods Between May 2005 and September 2009, 7 cases of discoid meniscus tear were treated with meniscal allograft. There were 2 males and 5 females with an average age of 22.6 years (range, 18-33 years). The locations were the left knee in 5cases and the right knee in 2 cases. The causes were sport trauma in 4 cases, impact injury in 2 cases, and no apparent reason in 1 case. Of them, 7 cases had joint tenderness gap, 2 cases had positive results in floating patella test, 7 cases had positive results in McMurray test, and 6 cases had positive results in squatting test. The range of knee motion was 0-60°. The disease duration ranged from 3 months to 17 years (median, 26 months). Results The number of the pins was 9-13 (mean, 11). The operative time ranged from 1.5 to 2.7 hours (mean, 1.7 hours). The postoperative fever time ranged from 31 to 57 hours (mean, 46.4 hours). Incisions healed by first intention in 6 cases; infection occurred in 1 case after operation and was cured after 18 days of local irrigation with antibiotic sal ine. Seven patients were followed up 21.6 months on average (range, 12-53 months). The range of knee motion was 0-125°. All patients had the negative results of floating patella test, McMurray test, and squatting test. MRI showed that there was a good heal ing between the transplanted meniscus and the surrounding synovium. The Japanese Orthopaedic Association (JOA) score was 80.71 ± 4.82 at 6 months after operation, showing significant difference (t=10.11, P=0.00) when compared with the score (41.71 ± 8.07) before operation. Conclusion Meniscal allograft in treatment of discoid meniscus tear is a rel iable and effective method, which can ease knee pain.

    Release date:2016-08-31 05:42 Export PDF Favorites Scan
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