Objective To study the feasibility and clinical results of C2, 3 pedicle-lateral mass plate fixation in the treatment of unstable Hangman's fractures. Methods From March 1999 to July 2005, 25 cases of unstable Hangman's fracture were treated surgically using the C2, 3 pedicle-lateral mass plate. All the cases were followed up for the healing of bone and function of the cervical vertebrate. Results The average follow-up period was 38 months. Twenty-three cases had a perfect reduction. Three cases had kyphosis deformity. There were no other complications related to the operation. AH the cases had a perfect early fusion of the C2 pedicle isthmus and long-term stability of C2, 3 intervertebral space. The clinic results were good. Conclusion Since the C2, 3 pedicle-lateral mass fixation can provide immediate reduction and satisfactory biomechanical stability, it is a good device for unstable Hangman s fractures.

Objective To evaluate the effects of percutaneous balloon mitral valvotomy (PBMV) for mitral stenosis (MS) with moderate mitral regurgitation (MR), particularly with bad mitral condition. Methods PBMV was performed in 62 patients with both MS and MR, of whom 7 had bad mitral condition, and the changes of mitral valve area, mean left atrial pressure , mitral valve gradient, cardiac function and left ventricular maximal diameter were observed. Results Mitral valve area increased from (0.83?0.18) cm 2 to (1.86?0.24) cm 2 (P

Objective: To explore the basic condition of subjective self consistency and congruence and general well-being of soldiers. Methods: 225 soldiers in Chong-qing were required to complete the SCCS and GWB. Results: ①There are notable difference in SCC among educational levels. ②There are notable difference in GWB among army years. ③All factors of SCC positively correlated with GWB; Some factors of SCC had significant direct effects on GWB. Conclusion: The level of soldiers'SCCS and GWB is in order, the army should strengthen mental health education.

Objective To evaluate improvement of visual acuity for advanced proliferative diabetic retinopathy eyes with different complications after vitrectomy. Methods Four groups of advanced proliferative diabetic retinopathy (APDR) in 314 eyes with diabetes type Ⅱ and type Ⅰ were analyzed retrospectively: vitreous hemorrhage with limited traction retinal detachment (VH), extensive fibrovascular membranes with traction retinal detachment (TD), combined rhegmatogenous and traction retinal detachment (CRT) and cataract with vitreous hemorrhage or and traction retinal detachment (CHD). Results 0.1 or better postoperative visual acuity was achieved in 59.5% of type Ⅱ and 66.7% of type Ⅰ in the VH group; 39.4% of type Ⅱ and 52.6% of type Ⅰ in the extensive TD group; 31.6% of the CRT group; 62.5% of the CHD group. The major intraoperative complication is iatrogenic retinal breaks. The causes of postoperative visual loss in present study included neovascular glaucoma (2.8% of type Ⅰ and 0.4% of type Ⅱ in aphakia, 25% of type Ⅱ in aphakia and 4.2% in pseudophakia), retinal detachment and CRAO. Conclusion The majority of APDR eyes obtained better visual improvement after vitrectomy and photocoagulation.

Objective To evaluate the success rate and the risk of impairing vision for epimacular surgery. Methods A retrospective analysis of 57 eyes with epimacular membrane after surgery was made, and the changes in visual acuity and near visual acuity, in different etiology, improvement in distortion, as well as intraoperative and postoperative complications were compared. Results The eyes of 78 8% achieved a visual improvement of more than 2 lines. The visual improvement after surgery of epimacular membranes was the most in buckling group, then in macular hole with epimacular membrane and idiopathic eyes, the change was very limited in macular traction syndrome. The improvement of near visual acuity is usually better than distant visual acuity. The improvement rate of distortion is of 65 0%. The main intraoperative complication was reopen of the primary hole(4 eyes) and the formation of new hole(5 eyes). Conclusion Surgical peeling for epimacular membranes can improve the visual acuity and distorted vision,particularly in epimacular membrane after buckling surgeries, with macular hole and idiopathic eyes. possible risks might be present in surgical manipulation.

Mutations and deletions of the tumour suppressor PTEN are frequently involved in the development of cancer.However, PTEN is also tightly controlled by various non-genomic mechanisms,such as the epigenetic silen-cing of PTEN, post-transcriptional regulation by non-coding RNAs and post-translational modification.

Objective To evaluate the anatomic outcome after lens-sparing vitrectomy (LSV) or scleral buckle (SB) for stage 4 retinopathy of prematurity (ROP).Methods The clinical data of 39 infants (50 eyes) with 4a (20 eyes) or 4b (30 eyes) were retrospectively analyzed.The age ranged from two to 18 months,with a mean of (6.0±3.4) months.The gestational age ranged from 26 to 33 weeks,with a mean of (30.0±1.6) weeks.The birth weight ranged from 800 to 1900 g,with a mean of (1404.5±237.6) g.Nineteen eyes underwent SB and 31 eyes underwent LSV.Follow-up ranged from 6 to 84 months,with a mean of (26.0±21.7) months.The anatomical and refractive results were reviewed at the final follow-up.Results The anatomic success of SB was 100.0％ (19 of 19 eyes) and that of LSV was 87.1％ (27 of 31eyes).Among the patients in whom treatment failed,4 were in the LSV group (4/31,12.9％).The buckles of 5 eyes (5/19,26.3％) were removed.At the end of the follow-up,the mean myopic refraction was (-4.46±2.49) diopters (ranging from -1.25 to 11.00 diopters) in the LSV group,and ( -3.21±1.96) diopters (ranging from -1.25 to 9.25 diopters) in the SB group.There was no significant difference between two groups (F=2.76,P=0.103).Conclusion The anatomic outcome after LSV or SB for stage 4 ROP was excellent.

Objective To compare the efficacy and safety of laser photocoagulation and intravitreal injection of bevacizumab for stage 3 retinopathy of prematurity (ROP).Methods The study included 38eyes of 19 infants with stage 3 ROP (18 eyes of 9 infants in zone Ⅰ,20 eyes of 10 infants in zone Ⅱ ).All the patients were examined by indirect ophthalmoscope and photographed by wide-angle digital retinal imaging system (RetCam Ⅱ ). The fundus lesions in both eyes were the same. Patients received laser photocoagulation in one eye (laser group) and intravitreal injection of 0.03 ml bevacizumab (25 mg/ml) in the fellow eyes (bevacizumab group) during treatment.Follow-up ranged from 12 to 66 weeks,with an average of 33 weeks. The regression time of neovascular ridges and plus-diseases in two groups were compared.Results For 18 eyes with stage 3 ROP in zone Ⅰ,the regression time of neovascular ridges and plus-diseases were (2.25 ±0.46) and (2.11 ±0.60) weeks respectively in bevacizumab group,and both were (3.75 ± 1.75) weeks in laser group.The differences between those two groups were statistically significant (F=18.29,15.56；P＜0.05).For 20 eyes with stage 3 ROP in zone Ⅱ,the regression time of neovascular ridges and plus-diseases were (3.1 ±1.72) and (2.1 ± 0.56) weeks respectively in bevacizumab group,and were (3.50± 1.90) and (2.50± 1.35) weeks respectively in laser group.The differences between those two groups were not statistically significant (F =0.38,2.62 ; P＞ 0.05).There were more fibrous membrane proliferations on the retinal surface in 8 eyes,including 6 eyes in laser group and 2 eyes in bevacizumab group. There was no treatment-related endophthalmitis,cataract,retinal tears and other complications during the follow-up.Conclusion The laser photocoagulation and intravitreal injection of bevacizumab were both safe and effective in treating stage 3 ROP.

Objective:To analyze the magnetic resonance imaging (MRI) features of parasellar cavernous haemangioma and improve the diagnosis and differential diagnosis accuracy.Methods:13 patients with parasellar cavernous haemangioma were collected.All the patients were diagnosed by MRI and confirmed by pathology.Based on the pathologic findings,the MRI features were discussed.Results:9 cases presented horizontal dumbbell.The lesions located in the parasellar were larger than the sella turcica.The main body position of the lesions were centered lateral to the parasellar and encasesed the intracavernous internal carotid artery (ICICA).While,1 cases were similar in size and shape.1 case was located in the sella turcica.2 cases was centered lateral to the ICICA.pituitary were detected obscurity in 7 cases and displaced in 6 cases,6 cases appeared extremely high homogeneous intensity on T2-weighted images:as bright as cerebrospinal fluid signal.Only 5 cases underwent three-dimensional arterial spin labelling perfusion imaging (3D-ASL).The lesions revealed marked hypoperfusion.The cases of misdiagnosis were 9,including 4 cpituitary adenomas and 5 meningiomas.Conclusions:The characteristics of MR images ofparasellar cavernous haemangioma were horizontal bottle gourd form,the main body position of the lesions were centered lateral to the parasellar and encasesed the (ICICA),and their extremely high homogeneous intensity on T2-weighted images:as bright as cerebrospinal fluid signal.In cases that are equivocal,3D-ASL were useful in differentiating cavernous haemangiomas from parasellar meningiomas,which could decrease mistaken diagnosis.Graspping the imaging feature and differential diagnosis were helpful for the diagnosis of this disease.

Objective To observe the therapeutic effect of segmental scleral buckling and vitrectomy with/without lensectomy on the retinopathy of prematurity (ROP) stage 4a,4b and 5.Methods One hundred and thirty-four ROP infants (181 eyes) diagnosed as stage 4a,4b and 5,and performed with segmental scleral buckling or vitreous with/without lensectomy were retrospectively analyzed.The operated 4a-,4b-and 5-stage eyes were 40,51 and 90 eyes.The operational method depended on the location and severity of fibrovascular membrane.Of 181 eyes,segmental scleral buckling was referred for 37 eyes which include 23 eyes with 4a stage and 14 eyes with 4b stage;vitrectomy was referred for 50 eyes which include 14 eyes with 4a stage,29 eyes with 4b stage and 7 eyes with 5 stage;vitrectomy with lensectomy was referred for 94 eyes which include 3 eyes with 4a stage,8 eyes with 4b stage and 83 eyes with 5 stage.The effect was classified as success,improved and failure.Failure includes lost eye.Follow-up for 4a,4b and 5 stage patients are 34,31 and 29 months respectively.Results Segmental scleral buckling was referred for 37 eyes,success in 23 eyes (62.16％),improved in 11 eyes (29.73 ％),failure in 3 eyes (8.11 ％).Vitrectomy was referred for 50 eyes,and success in 20 eyes (40.00％),improved in 22 eyes (44.00％),and failure in 8 eyes (16.00％).In the total of 94 eyes underwent vitrectomy with lensectomy,20 eyes was success (21.28％),improved in 17 eyes (18.08％),failure in 57 eyes (60.64％).In 40 stage 4a eyes,33 successes (82.50％),6 improved (15.00％) and 1 failure (2.50％).In 51 stage4b eyes,11 successes (21.57％),30 improved (58.82％) and 10 failures (19.61％).For 90 stage 5 eyes,14 successes (17.50％),19 improved (23.75％) and 57 failures (71.25％).The therapeutic effect of segmental scleral buckling for stage 4a was better than that for stage 5 (x2 =6.707,P=0.035).The difference of therapeutic effect of vitrectomy for different stage was significant (x2=21.010,P =0.000);stage 4a was the best;stage 4b was the second,stage 5 was the worst.The therapeutic effect of vitrectomy with lensectomy for stage 5 was worse than that for stage 4a and 4b (x2=16.066,P=0.003).Conclusion The surgery patterns of ROP was determined based on the disease severity,the surgery effects of stage 4a and 4b were better than stage 5,which had nothing to do with the surgical procedures.