Objective To study the methods for reconstruction of pelvic ring after subtotal sacrectomy of primary sacral bone tumor.Methods The pelvic ring of nine patients with primary sacral bone tumor were reconstructed by internal fixation after sacrectomy.Results In 9 patients,all were followed-up and got satisfactory functional recovery, the pelvic ring was stable without dislocation.Conclusions Operation should be considered and adopted for primary sacral bone tumor. Reconstruction of sacrum with internal fixation can improve the stability of the pelvis.

Objective To study the methods for treatment of distal femoral complicated fractures.Methods Twenty-seven cases were treated using condyle sustain plate after open reduction.Results In 27 patients,all were followed-up for average 1 5 years,complications included two cases of phocomelia and another two patients with valgus deformity.According to Merchan standards,the rate of the excellent and the good was 73 9%.Conclusion Sustain plate is an excellent alternative for the treatment of distal femoral supracondylar fracture and intercondylar comminuted fracture.

[Objective]Design the Static Three Dimensional Screw-Plate system(STDSP), bring a new instrument for the treatment of femoral neck fractures, which has good biome chanical features of axial loading and rotation stability and can reestablish the loss of support of the posterior neck of fracture with posterior comminution. [Method]Design the STDSP. To the fracture group,one femur of each pair was randomly selected to be stabilized by STDSP, and the other was fixed by the three cancellous lag screws(TCS). Then the constructions were tested with axial loading or rotation to failure. The intact group were fixed and then taken out with the two methods, then tested with axial loading. [Result] (1)Rotation test: Compare the loads of the same rotation angle and the loads of the same width the anterior gap of the osteotomy open, STDS group is bigger than TCS group(PTCS group (P

[Objective]To explore the curative effect of lumbar discogenic low back pain treated with posterior lumbar interbody fusion(PLIF)and transpadicular instrumentation.[Method]Thirty-six patients with lumbar discogenic low back pain were treated with disc excision,lumbar interbody fusion and transpedicular instrumentation.The clinical results were evaluated by pre-and post-operative VAS(visual analogue scale),and the fusion rates were evaluated by X-ray of the lumbosacral spine.[Result]The average period of follow-up was 16 months,ranging from 8 to 28 months.Low back pain basically disappeared in 33 patients treated with PLIF,mild back pain occurred in 3 patients;the VAS after operation decreased significantly in comparison with that of preoparation(P

0.05).There were significant differences between group B and C pre and postoperatively(P

Peripheral blood mononuclear cells from 32 cases of osteosarcoma and 20 normal controls were separated and induced by lipopolysaccharide, followed by 48 hour incubation in vitro, then the supernatant were collected. The levels of IL-6 were measured by enzyme linked immunosorbent assays, the concentrations of NO were measured by Griess methods. The results were as follows: The concentrations of IL-6 and NO were significantly higher than those in normal contrls (P<0.01). There were positive correlation between the levels of IL-6 and NO in patients with osteosarcoma (r=0.652, P<0.01). The results suggest that the immune function of peripheral mononuclear cell in patients with osteosarcoma was disordered. It may activate peripheral mononuclear cells to produce high levels of IL-6 and NO, which may take part in the pathogenesis of osteosarcoma.

[Objective] To discuss the effect of total hip arthroplasty with structural bone-grafting for high congenital dislocation of adult hip.[Method]From August 2003 to October 2006,22 patients(29 hip)with congenital dislocation of hip were treated with total hip arthroplasty and structural bone-grafting.There were 10 males and 12 females.There were 13 left and 26 right.The ages were from 23 to 42 years old,with the average of 34.6 years.Clinical symptoms included hip pain,hip instability and limping.The preoperative average Harris scores was 46.8.The preoperative average length difference between two legs was 3.8 cm.The femoral head dislocation height from normal position was 3.9 cm on average(range,3.2 to 5.6cm).The average range of motion of the hip:flexion 66.5?,abduction 23.8?,external rotation 20.4?,internal rotation 5.3?.Posterolateral approach was used during operation and all the acetabular cups were reconstructed at the true acetabular location and were covered completely with femoral head autograft.The reduction of prosthesis was achieved by releasing surrouding soft tissue.The acetabular reconstruction was done with the cemented acetabular component in 18 hips,the small acetabular component in 5 and common cementless acetabular component in 6.Cementless shaft was used in 10 hips,common cemented shaft in 13,steno-vertical cemented shaft in 4 and long cemented shaft in 2.The clinical effects were evaluated with operative time,blood loss,Harris scale,joint range of motion,length difference between two legs and complications.[Result]The average operative time was 95 minutes(range from 70 to 135 rain).The average blood loss was 400 ml(range from 300 ml to 650 ml).Primary healing of wound was observed in all patients without infection.Position of prothesis judged by X-ray was fine at 1 week postoperatively,the average abduction angle of the cup was 39?,and the average anterior angle was 13?.Twenty-two cases were followed up from 10 months to 47 months(average 17.6 months)after surgery,the average score was 89.2 points(ranged from 72 points to 93 points),according to the evaluate of Harris.The average range of motion of the hip was 115.3? for flexion,44.6? for abduction,49.5? for external rotation,26.8? for internal rotation.The preoperative average length difference between two legs was 1.2 cm.There were 2 postoperative femoral nerve palsy which resolved completely within 4 months.Femoral head autografts were not absorbed.Neither loosening nor dislocation of the prostheses occurred in the time of follow-up.[Conclusion]Total hip arthroplasty with structural bone-grafting is an effective method for high congenital dislocation of adult hip.It improves symptoms,functions and shapes.Structural bone-grafting can provide reliable acetabular coverage and restore bone stock.In case of the altitude of femoral head dislocation upward from normal position less than 4cm,reduction of prosthesis can achieve by releasing surrouding soft tissue without femoral nerve palsy.

[Objective]To explore the intermediate result of the use of allograft grafting for bone defects in revision total hip arthroplasty.[Methods]A retrospective study was carried out on 22 patients(22 hips) with the use of allograft grafting for bone defects in revision of total hip arthroplasty from April 2000 to April 2005.There were 13 male and 9 female with mean age of 65.5 years.According to the AAOS system,the bone defects in acetabulum were classified into type I in 5 hips,type II 14 hips and type III 3 hips,and on the femoral side,they were classified into type I in 3 hips,type II 12 hips and type III 2 hips.The reconstruction of bone defects in acetabulum contained structural bone graft in 5 hips,impaction bone graft in 12 hips,and metal wire mesh with bone graft in 5 hips.On the femoral side,3 hips were dealed with structural bone graft,12 hips were done with impaction bone graft,and 2 hips were repaired by metal wire mesh with bone graft.Harris Hip Score System and radiography were used to evaluate the clinical efficiency.[Results]The mean follow-up time was 61 months(37～97 months).Harris score improved from 45 points(30～65) pre-revision to 86 points(62～96) at the final follow-up.Insion drainage occurred in one hip.One patient remain slight pain in hip.No prothesis loosening,radiolucent lines were observed during the follow-up.None need to second revision.[Conclusion]During the THA revision surgery,adopting suitable allografts to repair the different types of bone defects is feasible and the mid-term result is good.

[Objective]To evaluate the short-term and long-term effectiveness of the surgical technique of one-stage one-step surgical techniques of Z-plate-Ⅱ~(TM) internal fixation apparatus system and anterior debridement and autograft bone graft fusion in the treatment thoraco-lumbar spinal tuberculosis with kyphotic deformity.[Method]The outcome of sixty eight cases suffered from thoraco-lumbar spinal tuberculasis with kyphotic deformity between July 1998 and March 2004 managed by the surgical techniques of Z-plate-Ⅱ~(TM) internal fixation apparatus system and anterior debridement and antograft bone graft fusion through posteroiateral costotransversectomy or kidney incision was analyzed.All cases wer given a longitudinal study follow-up for a mean of 3.3(2.2~6.3)years postoperatively.[Result]All patients showed successful autograft bone graft fusion.Among 45 cases accompanied with neurotic symptom of Potts paraplegia,25 were completely recovered,15 were partly recovered,total the ratio of recovery was 88.89% at the end of postoperative follow-up.The average immediate postoperative correction of kyphosis angle was 28.9?,the average loss of correction was only 2.7? at final follow-up.[Conclusion]The surgical technique of one-stage one-step Z-plate-Ⅱ~(TM) internal fixation apparatus system and anterior debrideraent and autograft bone graft fusion is found helpful in strengthening the stability of the spine in thoraco-lumbar spinal tuberculosis with kyphotic deformity,providing successful interbody fusion and recovery of Potts paraplegia,correcting the kyphosis,and preventing progress of kyphosis.

Objective To evaluate the value of Vascular Closure Device(VCD)with the new Angio-Seal STS(Self-Tightening Suture)in femoral artery closure after coronary angiography(CAG)or percutaneous coronary intervention(PCI).Methods Totally 298 patients were divided into Angio-Seal STS group(group A,n=120)and manual compression group(group B,n=178).The success rate of hemostasis,the time of hemostasis,the time of bedrest and the complication rate were observed.Results Compared with group B,the time of hemostasis,the time of bedrest and the rate of distress on the waist were markedly decreased in group A(P0.05).Conclusion Angio-Seal STS vascular closure derice provided a safe and effective means of obtainig rapid arterial hemostasis after cardiac catheterization.It reduces the bedrest time and discomfort without increasing complications.Angio-seal STS device has the feature of self tightening suture,and doesn't need the post-placement tension spring.