OBJECTIVE:To analyze drug elasticity of demand of urban residents with quantitation.METHODS:Expand linear expenditure system(ELES)model was used to analyze sectional data of different kinds of consumption expenditure and the disposable income of urban residents in2003and to calculate the value of marginal consumption tendency,the elasticity value of demand income and the demand price.RESULTS&CONCLUSIONS:The changes of drugs price have little influence on drugs demand,for urban residents,drugs consumption belongs to necessary for life.

Objective To evaluate primary open reduction and wire-pin fixation for total dislocation of talus.Methods A retrospective study was conducted of the 12 patients who had been admitted into our hospital from October 2009 to December 2013 for total talar dislocation without fracture of the talar neck or body and had been available for complete follow-up.They were 10 males and 2 females.Their range of age was from 17 to 56 years (average,34.2 years).The total dislocation was open in 4 cases and close in 8.All of them underwent primary open reduction and wire-pin fixation.The functions of ankle joint and hindfoot were evaluated according to the American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot scale.Results The follow-up time ranged from 22 to 72 months (average,35.6 months).Postoperatively,one case suffered skin necrosis and another superficial infection,both of whom responded to skin flap transferring after debridement.Traumatic arthritis of the talotibial or subtalar joint was found more or less in 7 cases,one of whom complained of severe pain but refused the subtalar arthrodesis advised.Their AOFAS scores at the final follow-up ranged from 42 to 96 points (average,72.2 points).Five cases developed avascular necrosis of the talus,but no talar collapse happened.Conclusions Primary open reduction and wire-pin fixation is effective for treatment of close total talar dislocation and open total dislocation of Gustilo type Ⅲ A or below.Although avascular necrosis and traumatic arthritis are common postoperative complications,satisfactory functions can be achieved if there is no collapse,severe pain or infection.

Objective:To explore the feasibility and therapeutic efficacy of using the Henry approach to expose and place a metaphyseal bone plate laterally to fixate a proximal radial shaft fracture.Methods:A retrospective analysis was done of the 5 proximal radial shaft fractures (defined as the fracture involving the extent between the radial tuberosity to the insertion of the pronator teres) which had been treated from April 2018 to June 2019 at Department of Traumatology and Orthopedics, Beijing Jishuitan Hospital through the Henry approach to place a metaphyseal plate laterally to the radius for fixation. There were 2 males and 3 females, aged from 16 to 59 years (average, 41.4 years), with 3 cases on the left side and 2 cases on the right side. The imaging data, fracture healing time, forearm pronation-supination, and visual analogue scale (VAS) of the patients were regularly followed up; the therapeutic efficacy was evaluated at the last follow-up using Quick Disabilities of the Arm, Shoulder, and Hand (Quick-DASH), Anderson and Grace-Eversmann evaluations.Results:The 5 patients were followed up for 7 to 16 months (average, 10.6 months). Their fracture healing time averaged 4.6 months, elbow flexion 146°, extension -2°, pronation 77°, and supination 88°. In postoperative VAS, 4 cases scored a 0 point and one case 1 point. At the last follow-up, their Quick-DASH scores averaged 4.1 points; by the Anderson evaluation, 5 cases were excellent; by the Grace-Eversmann evaluation, 4 cases were excellent and one case was good. No postoperative complication was observed.Conclusion:It is an effective treatment of proximal radial shaft fracture to use the Henry approach to expose and place a 3.5mm metaphyseal plate laterally to the radius for fixation.

Objective:To compare the outcomes between hook thin plate compression technique and conventional screw-plate fixation in the treatment of adolescent tibial tubercle avulsion fractures.Methods:A retrospective analysis was performed of the 43 adolescent patients with tibial tubercle avulsion fracture who had been treated at Department of Orthopedics and Traumatology, Beijing Jishuitan Hospital from January 2018 to October 2020. There were 42 males and one female, aged from 13 to 17 years. According to their treatment methods, they were divided into an observation group (9 cases) treated with hook thin plate compression technique and a control group (34 cases) treated with fixation with cannulated screws alone or in addition with a 1/3 tube plate. The maximum range of knee flexion, B?stman score, and cases returning to school at one month after operation, as well as fracture union time, B?stman score and cases with complications at the last follow-up were compared between the 2 groups.Results:There were no significant differences in the preoperative general data between the 2 groups, showing comparability ( P>0.05). By the postoperative one month, the maximum range of knee flexion [90.0° (85.0°, 102.5°)], B?stman score [21.0 (18.5, 21.0)] and cases returning to school (7) in the observation group were significantly better than those in the control group [22.5° (15.0°, 30.0°), 11.0 (10.0, 13.0), and 0] ( P<0.001). The last follow-up revealed no significant differences between the 2 groups in frature union time [(2.7±0.5) months versus (2.8±0.5) months], B?stman score [30.0 (30.0, 30.0) versus 30.0 (30.0, 30.0), 30.0)] or cases with complications (1 versus 2) ( P>0.05). Conclusion:In the treatment of adolescent tibial tubercle avulsion fractures, compared with conventional fixation with cannulated screws alone or in addition with a 1/3 tube plate, hook thin plate compression technique may lead to better outcomes, because it allows early rehabilitation to shorten the postoperative immobilization time and promote early functional recovery.

Objective To investigate the current perioperative management of geriatric hip fractures in China.Methods The survey was performed between 15th to 21st of November,2017.An electric questionnaire was delivered to the orthopedic surgeons attending the 12th International Congress of Chinese Orthopedic Association (COA) and the orthopedic fellows attending grand round at Department of Orthopaedic Trauma,Beijing Jishuitan Hospital.The questionnaire addressed the current perioperative management of geriatric hip fractures (≥ 65 years) at the departments where the participants worked,covering preoperative examination and preparation,postoperative rehabilitation and multidisciplinary collaboration.Results 171 valid questionnaires were collected for this study.Of the 171 orthopedic surgeons from 28 provinces in China,106 (62.0％) came from a tertiary hospital and 65 (38.0％) from a secondary hospital.In 74.3％ (127/171) of the hospitals,more than 100 geriatric hip fractures were treated annually.63.2％ (108/171) of the hospitals treated 100 to 500 cases annually,5.9％ (10/171) 500 to 1,000 cases and 5.3％ (9/171) more than 1,000 cases.Multidisciplinary collaboration was not established in most hospitals (71.9％,123/171) for geriatric hip fractures.Pulmonary function test (61.4％,105/171),Holter (38.0％,65/171) and ambulatory blood pressure monitoring (53.8％,92/171) were indicated as routine preoperative investigations.In 56.3 ％ (96 / 171) of the hospitals,traction was performed before operation.In 80.1％ (137 / 171) of the hospitals,the interval between admission to surgery was more than 48h for the patients.In 36.3％ (62/171)of the hospitals,patients were allowed to ambulate within one week after surgery.In 4.1％ (7/171) of the hospitals,patients were allowed full weight-bearing within one week after surgery.Conclusion Significant gaps exist in perioperative management of geriatric hip fractures between current practice in China and worldwide guidelines and consensus.

Objective:To explore the short-term efficacy of fixation with a 3D printed individualized custom-made plate in the treatment of elderly patients with periprosthetic femoral fracture.Methods:Retrospectively analyzed were the 5 elderly patients with periprosthetic femoral fracture who had been treated by fixation with a 3D printed individualized custom-made plate from January 2022 to July 2022 at Department of Orthopaedics and Traumatology, Beijing Jishuitan Hospital. There were 3 males and 2 females, aged 81, 86, 77, 91 and 87 years, respectively. One left and 4 right limbs were affected. Vancouver classification: type B1 ( n=3), type B2 ( n=1), and type C ( n=1). The time from operation to injury was 5, 6, 10, 5 and 7 days, respectively. Preoperatively, the femur affected, prosthesis and individualized plate with a greater trochanteric hook, loop cable channel and bone-like trabecular microporous structure were custom-made by 3D printing according to 1:1 models. Virtual operations were simulated to formulate surgical protocols. The operation time, length of surgical incision, intraoperative blood loss and transfusion, hospital stay, hip function and complications at the last follow-up were recorded. Results:The 5 patients were followed up for 12, 7, 10, 3 and 6 months, respectively. There were no events of superficial incision or deep prosthesis infection. Respectively, the operation time was 1.8, 1.7, 2.3, 2.0 and 3.3 h; the length of surgical incision 31, 30, 38, 27 and 30 cm; the intraoperative bleeding volume 400, 300, 300, 500 and 600 mL; the length of hospital stay 8, 9, 15, 14 and 11 d. Four patients received intraoperative blood transfusion of 300, 900, 150 and 1, 050 mL, respectively. One patient died of a heart attack 3 months after discharge; another patient developed dyskinesia at the contralateral limb 3 months after discharge due to cerebral infarction and died of recurrent cerebral infarction 7 months after discharge. At the last follow-up, the Harris hip scores of 3 patients were 86, 77 and 69 points, respectively. None of the patients had complications like breakage or loosening of implants.Conclusion:In the treatment of elderly patients with periprosthetic femoral fracture, fixation with a 3D printed individualized custom-made plate may lead to fine limb function and good short-term curative efficacy.

Objective:To evaluate the effectiveness of perioperative fasting abbreviation in traumatic patients with orthopaedic trauma and diabetes mellitus undergoing selective surgery.Methods:The patients were selected for this prospective nonrandomized controlled study who had undergone selective surgery from June 2019 to June 2021 at Department of Orthopaedic Trauma, Beijing Jishuitan Hospital. They were divided into an intervention group and a control group according to the wards where they stayed. The intervention group was fasted for solids from 0 o'clock on the surgery day and received oral solution with 6.25% maltodextrin which had been prepared by the nutritional department 3 hours prior to surgery. The control group was fasted for either liquids or solids from the midnight before surgery. All patients were evaluated according to the wake-up score and defensive reflex score after surgery. Once they were awakened, they were allowed slag-free drinks. Normal food was allowed if there was no discomfort after 2 hours. The 2 groups were compared in terms of basic information, actual preoperative fasting time, total amount of preoperative drinking, and postoperative time for initial drinking and eating. The perioperative subjective feelings (anxiety, thirst, hunger, nausea, fatigue, dizziness, sweating, stomach discomfort, etc.), grip strength and blood glucose were observed and compared between the 2 groups. Adverse reactions in the 2 groups were also observed.Results:A total of 135 patients were included, including 52 in the intervention group and 83 in the control group. The intervention group consisted of 22 males and 30 females aged from 30 to 84 years; the control group consisted of 39 males and 44 females aged from 29 to 81 years. There was no significant difference in the basic information between the 2 groups, showing comparability ( P>0.05). The intervention group had significantly shorter preoperative fasting time [3.5 (2.5, 6.3) h versus 12.0 (9.0, 16.0) h], significantly higher water intake before surgery [300 (200, 300) mL versus 100 (100, 200) mL], significantly shorter postoperative fasting time [0.08 (0, 1.25) h versus 2.00(0, 6.00) h], and significantly reduced time to return to normal diet [2.0 (2.0, 2.3) h versus 3.0(2.0, 6.0) h] than the control group (all P<0.05). The symptoms of anxiety, fatigue, sweating, and stomach discomfort in the intervention group were significantly fewer than those in the control group throughout the evaluation period. The thirst in the intervention group was significantly alleviated than that in the control group immediately after returning to the ward after surgery, and the dizziness and hunger were significantly alleviated than those in the control group when the patients left the ward to the operation room before surgery and immediately after returning to the ward. The symptom of nausea after returning to normal diet in the intervention group was significantly relieved compared with the control group. All the comparisons above showed statistically significant differences ( P<0.05). The blood glucose in the intervention group 2 hours after taking slag-free drinks was significantly higher than that in the control group ( Z=-2.108, P=0.035). There was no significant difference in the blood glucose between the 2 groups during other measurement periods ( P>0.05). There were no serious adverse reactions in either of the 2 groups. Conclusion:The protocol of perioperative fasting abbreviation may be safe and feasible for the patients with orthopaedic trauma and diabetes mellitus undergoing selective surgery, because it shows benefits of improving the patients' subjective feelings and stabilizing the blood glucose perioperatively.

Humans ; Aged ; Femoral Neck Fractures/surgery* ; Fracture Fixation, Internal/adverse effects* ; Osteonecrosis/surgery* ; Femur Head Necrosis/surgery*