[Objective]To analyze the character of the complex proximal humeral fracture,study their operative methods and evluate the efficiency of treatment for complex proximal humeral fracture in elder patients with LCP plate.[Method]From(Oct 2004 to June 2006,16 elder patients with complex proximal humeral fracture were admitted and treated with open reduction and LCP plate internal fixation,regular clinical follow-up was executed by our medical team,the postoperative results were observed and the efficiency were evaluated by us.[Result]Sixteen cases obtained postoperative clinical results from 6 to 18 months(average 12.3 months),the fracture were healed in all cases,the shoulder function were evaluated with Neer shoulder functoin scoring systerm,the execellent result were 11,good 2,normal 2 and poor 1,the execellent and good results were 81.3% in all cases,6 cases got anatomic reduction,6 cases got nearly anatomic reduction,3 normal and 1 poor which were certified by radiographic examination.[Conclusion]The treatment for complex proximal humeral fracture in elder with LCP plate has less invasive,firm internal fixation and satisfactory shoulder function recovery.It is a very satisfactory internal fixtion for complex proximal humeral fracture in elder patients.

[Objective]To evaluate the long term effect of the short incision and tenocutaneous relaxing suture to treat the acute closed rupture of the Achilles tendon.[Method]28 cases were treated by short incision and tenocutaneous relaxing suture from 1996-2005,The scar tissue and blood blocks between the ends of ruptured Achilles tendon were first debrided completely,then treated with percutanneous decmpression suture,the duration of follow up ranged from 2 years to 10 years.The treatment outcome were evaluated by Arner-Lindholm evaluation system and the MRI of post operation.2 cases were lost.[Result]According to the Arner-Lindholm evaluation system and the MRI of post operation,the treatment outcome were excellent in 18,and good in 6,with excellent rate of 92%,No complication including nerve injury and infection were found after operation,except 1 rerupture of Achilles tendon was found during the follow up period.The MRI showed the rupture Achilles tendon were repaired and remodeled very well in all cases.[Conclusion]The short incision and tenocutaneous relaxing suture is an ideal surgical technique,with good Clinical result and less Significant complication.

Objective To explore a new method in treating acute closed rupture of the Achilles tendon. Methods 22 cases of closed rupture of the Achilles tendon, which had been wounded within one week, were treated with short incision and tenocutaneous relaxing suture from 1994 to August 2001. Results The duration of follow up ranged from eight months to five years. According to Arner Lindholm criteria of therapeutic evaluation, excellent results were obtained in 19 (86.4% ), good in 3 (13.6% ), with the excellent and good rate being 100% . Conclusion Short incision and tenocutaneous relaxing suture is an effective treatment for acute closed rupture of the Achilles tendon because of its less suture tension and more blood supply protection. [

Objective To explore a therapeutic method for repairing the avulsion injury of total hand skin. Methods Bilateral chest navel flaps with nerves were used to repair the avulsion injury of total hand skin. Two nerves of the right lateral flap were anastomosed with the first and third common palmar digital nerves respectively; two nerves of the left lateral flap were anastomosed with the dorsum manus of ulnar nerve and cutaneous branch of radial nerve respectively. Results Postoperative follow up of 12 to 15 months showed that two cases were successful. The injured hands regained thalposis and thigmesthesia; the ulnar hand had sensitive thigmesthesia when touching a table; and the grasping function of the hand recovered partially. Conclusion Bilateral chest navel flaps with nerves are recommendable to all kinds of hospitals for repairing the avulsion injury of total hand skin.

Objective To investigate the methods and therapeutic effects in reconstructing and restoring the knee stability of floating knee injury. Methods A total of 38 patients with floating knee injury combined with acute knee instability treated from January 2000 to January 2006 were retrospectively studied to evaluate the efficacy of different procedures. Results All patients were followed up for 1-4 years (mean 1.5 years), which showed fracture healing in all patients. There occurred postoperative wound infection in three, internal fixator loosening in two, anterior cruciate ligament laxity in one and osteearthritis in two. According to Score of Hospital for Special Surgery (HSS) for knee function,the knee function was excellent in 32 patients, good in five and fair in one, with excellence rate of 84%. Conclnsions During the treatment of floating knee injury, attention should not only be paid to the reconstruction of the bone continaity, but also to the restoration of ligaments, meniscus, joint capsule and muscles.

Objective:To investigate the effect of arthroscopic superior capsular reconstruction (ASCR) of irreparable massive rotator cuff tears (RCTs) using the "Sandwich" patch graft (autologous fascia lata + LARS artificial ligament + autologous fascia lata).Methods:The patients with irreparable massive RCTs who underwent ASCR by using "Sandwich" patch graft were retrospectively evaluated between December 2016 and October 2018. All cases were followed up more than two years. The pain and function of the shoulder were evaluated by visual analogue scale (VAS), active forward elevation (aFE), American Shoulder & Elbow Surgeons score (ASES), University of California Los Angeles (UCLA) score, and Constant-Murley score. The acromiohumeral distance (AHD) and patch healing were assessed by shoulder X-ray and MRI scan.Results:Twenty-nine patients (12 males and 17 females) were enrolled for final analysis. The average age was 66.0±5.88 years (range 55-77 years). The average length of follow-up was 35.3±7.20 months (range 24-46 months). The tendon of the subscapularis muscle was intacted in 13 cases and repairable in 16 cases. All patients' teres minor muscles were intact and the function of deltoid muscles was all complete. Based on Hamada classification of massive RCTs, 11 cases with type 2, 14 cases with type 3, and 4 cases with type 4. At the last follow-up visit, the AFE of the surgical shoulder was 158.45°±23.87° (range 70°-180°), which was significantly higher than before the surgery 92.59°±45.99° (range 20°-160°, t=6.190, P<0.001). The ASES score was 92.92±9.08 (range 64-100), UCLA score was 31.62±3.93 (range 19-35), and Constant-Murley score was 85.8±8.44 (range 68-94), which were higher than those before the operation 30.69±12.99 (range 68-95), 10.93±3.43 (range 4-17), 39.62±12.68 (range 14-55). There were significant differences between them, respectively ( t=21.145, P<0.001; t=21.348, P<0.001; t=16.333, P<0.001). The VAS was 0.41±0.57 (range 0-2 points), which was significantly lower than that of 4.90±1.05 (range 3-7 points) before operation ( t=20.267, P<0.001). At the last follow-up visit, MRI showed that the AHD increased from 3.31±1.57 mm (range 1.1-6.6 mm) to 6.94±1.76 mm (range 3.0-10.8 mm) significantly ( t=12.195, P<0.001). Radiological outcomes were evaluated according to MRI, the total healing rate was 89.7% (26/29). There were two cases of complete tears, which including one case of infection and 1 partial tears. Conclusion:ASCR of irreparable massive RCTs using "Sandwich" patch graft showed the high healing rate in the short-term follow-up, which is possible to restore the shoulder functions early. It is an effective method for the treatment of irreparable massive RCTs.

Objective To explore the feasibility of low concentration contrast medium and low-voltage combined with adaptive statistical iterative reconstruction(ASRI)technique in enhanced CT imaging of solitary pulmonary nodules. Methods A total of 40 patients with solitary pulmonary nodules who underwent routine exam-inations and were pathologically confirmed from February 2015 to February 2017 were collected and divided into conventional group(conventional dose,high osmolar contrast,using filtered back projection reconstruction)and low dose group(low voltage,low concentration isotonic contrast,iterative reconstruction). Results Subjective scoring of conventional group(3.97 ± 0.57)and low dose group(4.01 ± 0.54)indicated no statistical significance (P > 0.05). No significant difference was found regarding to reconstructed image quality,SNR and CNR in both two groups.The dose length product(DLP)and effective dose(ED)in low dose group were lower than those in the conventional group[(283.52 ± 11.50)mGy/cm vs(370.74 ± 29.56)mGy/cm;(3.65 ± 0.32)mSV vs(5.11±0.25) mSV],and the difference was statistically significant(P < 0.05). Conclusions Low concentration isotonic con-trast agent(iodixanol 270 mgI/L)and low voltage(100 kV)combined with ASIR technology could satisfy the clini-cal need in enhanced CT imaging of solitary pulmonary nodule.

Objective: To investigate the clinical outcomes of arthroscopic bridging reconstruction of irreparable massive rotator cuff tears using autogenous fascia lata. Methods: From July 2015 to July 2017, a total of 10 cases (4 male and 6 female) who were treated with arthroscopic bridging reconstruction for irreparable massive rotator cuff tears using autogenous fascia lata were retrospectively analyzed. The age before surgery was 61.3±2.9 years (range 57-67 years). There were 7 patients with right shoulders and 3 with left shoulders. The dominate sides were involved in 7 cases. The trauma history was documented in 2 shoulders. The duration of preoperative symptoms was 14.0±13.5 months (1-48 months). The case with revision surgery was not included. The patients were examined with magnetic resonance imaging (MRI) to evaluate the healing of fascia lata patch bridging in the joint at one week, six months, one year and two years after operation. The motion range of shoulder and the clinical scores, including visual analogue scale (VAS), University of California Los Angeles (UCLA) score, Constant-Murley score and American Shoulder & Elbow Surgeons (ASES) score, were measured before surgery and at follow-up duration. Results: All cases were reconstructed the horizontal couple. No perioperative complication was occurred and all surgery were completed safely and successfully. At the end of two years, the score of ASES was 92.2±3.5 (range 88.3-98.3), UCLA 31.6±2.0 (range 28-34), Constant-Murley 85.2±5.4 (range 78-93) with significant difference (t=11.254, P=0.000; t=12.111, P=0.000; t=8.948, P=0.00) comparing with that before surgery. The VAS pain score was 0.6±0.5 (range 0-1) which was significantly lower than that preoperatively (t=11.326, P=0.000). At 2 years after operation, MRI shows that fascia lata patches healed well in 9 patients. However, one case was with re-tear and patch absorption. The range of motion of shoulder was significantly improved in all patients but with different degrees of weakness (3-4). Conclusion Arthroscopic bridging reconstruction using autogenous fascia lata could effectively improve shoulder function in patients with irreparable massive rotator cuff tears. The autogenous fascia lata patch can heal with the help of rotator cuff tissue through bridging reconstruction.

Objective:To analyze and explore the common radiomics features of radiation pneumonitis (RP) in patients with lung cancer and esophageal cancer, and then establish a prediction model that can predict the occurrence of RP in two types of cancer after radiotherapy.Methods:Clinical data of 100 patients with stage Ⅲ lung cancer and 100 patients with stage Ⅲ esophageal cancer who received radical radiotherapy were retrospectively analyzed. The RP was graded by imaging data and clinical information during follow-up, and the planning CT images were collected. The whole lung was used as the volume of interest to extract radiomics features. The radiomics features, clinical and dosimetric parameters related to RP were analyzed, and the model was constructed by machine learning.Results:A total of 1691 radiomics features were extracted from CT images. After ANOVA and LASSO dimensionality reduction in lung cancer and esophageal cancer patients, 8 and 6 radiomics features associated with RP were identified, and 5 of them were the same. Using the random forest to construct the prediction model, lung cancer and esophageal cancer were alternately used as the training and validation sets. The AUC values of esophageal cancer and lung cancer as the independent validation set were 0.662 and 0.645.Conclusions:It is feasible to construct a common prediction model of RP in patients with lung cancer and esophageal cancer. Nevertheless, it is necessary to further expand the sample size and include clinical and dosimetric parameters to increase its accuracy, stability and generalization ability.

Objective To compare the difference in diagnostic value between conventional ultrasound and contrast-enhanced ultrasound (CEUS) for focal liver lesions and observe the application value of CEUS in the diagnosis and differential diagnosis of focal liver lesions. Methods Eighty-three patients who carried out conventional examination were diagnosed as focal liver lesions admitted to the Department of Ultrasound in Tianjin Medical University Cancer Hospital from May 2012 to July 2016, and totally 93 lesions were found. The types of lesions were determined by conventional ultrasonography, CEUS and pathology, and the effectiveness of conventional ultrasound and CEUS in the diagnosis of focal lesion types was compared, the time-intensity curve was used to record the beginning time of enhancement, peak time of enhancement, washout time and peak strength in different types of focal liver lesion, that may provide certain characteristics for differentiation of benign from malignant lesions, and the patterns of CEUS in different types of liver focal lesion were observed. Results Pathological examination confirmed the types of lesions:there were 57 malignant focal lesions in 93 lesions (including 34 hepatocellular carcinoma, 11 cholangiocarcinoma, 11 metastatic tumors and 1 lymphoma in liver), there were 36 benign lesions in 93 lesions [including 16 liver abscesses, 5 liver focal nodular hyperplasia (FNH), 5 hepatic adenomas, 4 hemangiomas, 3 uneven fatty liver, 2 hepatic cysts, and 1 hepatic perivascular cytoma]. By conventional ultrasound 51 focal liver lesions and by CEUS 80 focal liver lesions were correctly diagnosed. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of CEUS in diagnosing focal liver lesions were significantly higher than those of conventional ultrasound: 91.23% vs. 68.42%, 77.78% vs. 33.33%, 86.67% vs. 61.90%, 84.85% vs. 40%, 86.02% vs. 54.84%, respectively, the differences being statistically significant (all P < 0.01). All of malignant lesions including the arrival time (seconds: 11.17±2.15 vs. 15.92±2.90), the enhancement peak time (seconds: 21.13±3.06 vs. 40.93±11.71), the washout time (seconds:37.16±6.84 vs. 73.51±11.80) were earlier than those of benign lesions, and peak strength of malignant lesion was higher than that of benign lesions (dB: -46.64±3.60 vs. -63.36±15.38), the difference being statistically significant (all P < 0.01). Under CEUS pattern, different liver focal lesions revealed different types of enhancement, but in part of the focal lesions the types of enhancement had manifestations crossed. Conclusions CEUS improves the diagnostic efficacy for focal liver lesions which has great value for differential diagnosis of benign from malignant liver lesions.