Thirty native goats were equally divided into two groups at random.A transverse fracture wasmade at the middle of the femur and tibia on the same side .The c;pver-shaped pin was used to fix thefemur and the Kirshners wire for the tibia.The experimental animals were given L-Dopu tablers.The animals were undergone the gross examination,roentgenographic eXamination, histolgical study,electron microseopic scanning and the examination of blood chemistry at 2,4, 6,8and 12 weeks afteroperatio...
To cure patients suffering from atlanto-axial instability following old fracture of odontoid process concomitant with stenosis of lower end of cervical spinal canal, a new operative method was designed. It included atlanto-axial fusion by Gallie technique and resection of right half of the laminae of C3-C7 spine at one stage. A female of 63 years old was treated. She was admitted with neck pain and numbness of the upper and lower limbs. A history of neck injury was noted in enquiry. In physical examination showed the sensation of pain of the upper limbs was decreased and the muscle power of the upper and lower limbs ranged from III degree to IV degree. The X-ray film and MRI suggested that there was instability of the atlanto-axial joint with stenosis of 4th-6th cervical spinal canal. The operation was satisfactory. After operation, the patient was followed up for 11 months. The physical examination indicated that sensation of the upper limbs had recovered to normal and the muscle power of the upper limbs reached IV degree and that the lower limbs reached V degree and X-ray showed bony fusion of the atlanto-axial joint. The conclusions were: 1. The stability of atlanto-axial joint was reconstructed with expanding of the spinal canal at the same time. 2. The duration, risk and cost of the therapy were reduced, and maintenance of the stability of the cervical spine throughout whole period of treatment was recommended.
Objective To explore the cl inical effects of different operative procedures in treatment of upper humerus fracture nonunion. Methods From May 2001 to September 2007, 43 cases of upper humerus fractures nonunion were treated, including 31 males and 12 females with an average age of 37 years (range, 20-57 years). The causes were trafficaccident injury in 14 cases, fall ing injury from height in 11 cases, tumbl ing injury in 7 cases, heavy pound injury in 6 cases, machine injury in 4 cases, and pathological injury in 1 case. The time from fracture to hospital ization was 10-52 months (23 months on average). After open reduction, patients were treated respectively by bone-graft plus locking compression plate fixation (9 cases), scapula flap rotation displacement plus locking compression plate fixation (15 cases), and scapula flap rotation displacement plus locking compression plate plus tibia bone lamella fixation (19 cases). Results All incisions healed by first intention. The X-ray films showed good fracture reduction. No symptoms of infection and nerve injury occurred. Forty-three patients were followed up 12 to 25 months with an average of 18 months. All of them achieved radiographic union within 3.0 to 7.5 months (4.9 months on average). According to comprehensive assessing standard of X-ray film and functions of shoulder and elbow, the results were excellent in 21 cases, good in 15 cases, fair in 4 cases, and poor in 3 cases; the excellent and good rate was 83.7%. Conclusion In the treatment of upper humerus fractures nonunion, locking compression plate can provide stable fixation. It can achieve satisfactory results so long as the right method of bone graft is chosen according to fracture site situation. But for patients undergoing repeated surgery or having nonunion for long times and poor fracture site situation, after open reduction, scapula flap rotation displacement plus locking compression plate plus tibia bone lamella fixation has good outcome.
Objective To sum up the recent progress of common biodegradable internal fixation materials and to forecast the possible directions for further research. Methods The latest original articles about biomechanical properties, degradation characteristics, advantages and disadvantages of biodegradable internal fixation materials were extensively reviewed.Several common biodegradable materials were selected and expounded in different categories. Results The disadvantages of stress shielding and the second time removal, could be avoided by using biodegradable internal fixation materials instead of metal materials. Biodegradable internal fixation materials could fix fracture stably and they were ideal orthopedic internal fixation materials. Natural biodegradable polymers had excellent biocompatibil ity but poor mechanical strength. Synthetic biodegradable materials could be artificially regulated their degradation rate and had better mechanical strength, however, they had shortcomings in biocompatibil ity. Composite materials could learn from others’ b points to offset their weakness, therefore, they had pronounced advantages over the former two materials. Conclusion There still exist many problems in present biodegradable internal fixation materials although they are of great potential in its appl ication. Combining various biomaterials and using the specific processing technology to develop a biodegradable material which has better biomechanical properties, chemical properties and physical structure is the direction for future research.
Objective To investigate the therapeutic effect of long PHILOS locking compression plate on the proximal humerus and humeral shaft fractures. Methods From March 2005 to December 2007, 35 cases with the proximal humerus and humeral shaft fractures were treated with long PHILOS locking compression plate, including 16 males and 19 females aged 29-68 years old (average 54.5 years old). There were 34 cases of fresh and close fracture, and the time from injury to operation was 3-9 days. One case had delayed union of fracture 5 months after receiving T-plates and internal fixation with steel plate. For the proximal humerus fracture, 7 cases had 2 parts of fracture, 19 had 3 parts of fracture, and 9 had 4 parts of fracture according to Neer classification; while for the humeral shaft fracture, 3 cases were classified as A1, 5 as A2, 10 as B1, 3 as B2, 6 as B3, 7 as C1 and 1 as C3 according to AO classification. Postoperatively, Neer scoring system was employed to evaluate the function of shoulder joint and HSS scoring system was adopted to evaluate the function of elbow joint. Results All incisions healed by first intension, and 30 cases were followed up for 12-33 months (average 18.2 months). Postoperatively, 2 cases had symptoms of radial nerve paralysis, which disappeared within 3 weeks; 1 case suffered from humeral head necrosis and received the secondary operation of humeral head replacement; humeral head was reduced evenly in 1 case, and 2 cases felt chronic sl ight pain in shoulder joints and received no further treatment. X-ray films showed 29 cases had fracture heal ing 6 months after operation, and all the patients had bone union 12 months after operation except 1 case receiving humeral head replacement. No such compl ications as screw lossening and internal fixation loosening occurred. By Neer scoring system, 6 cases were graded as excellent, 19 as good, 3 as fair, 2 as poor, and the excellent and good rate was 83.3%. By HSS scoring system, 16 cases were gradedas excellent, 14 as good, and the excellent and good rate was 100%. Conclusion Applying long PHILOS locking compression plate in the treatment of the proximal humerus and humeral shaft fractures provides a sol id fixation and high satisfactory rate with minor compl ications.
The treatment of open reduction and internal fixation was carried out in 480 cases of fractures offemoral shafts. Patients were followed up in an average of 7. 6 years, 50 cases, rate of occurrence of10. 4%, had varying degrees of functional impairment of knee. It was considered that thecharacteristics of fractures, the time of oporation , selection of incision , the types of internal fixationdevices, and the duration of external immobilization were the main causes related to the occurren...
Objective Secondary osteoporosis is very common in patients with primary osteoporosis. Diabetes is a known cause of secondary osteoporosis. While type I diabetes has been clearly linked with diabetic osteoporosis, the effect of type II diabetes on bone health is controversial.Methods In the present study, we investigated the associations between type II diabetes and osteoporosis as well as fractures at different skeletal sites in Women’s Health Initiative participants.Results Common risk factors such as age, race, BMI, HRT use, and the history of fractures were significantly associated with osteoporosis and fractures in this study population. Diabetic women appeared to have a decreased risk of osteoporosis although it no longer remained significant after adjusting for other risk factors (crude HR=0.78, 95%CI 0.61 to 0.99; adjusted HR=0.93, 95%CI 0.73 to 1.19). The impact of diabetes on fractures varied at different body sites. There was a significant increase of risk of hip fracture (HR=2.54, 95%CI 1.14 to 5.66), but not spine fracture (HR=1.71, 95%CI 0.81 to 3.60) and arm fracture (HR=0.92, 95%CI 0.48 to 1.76) among the women with diabetes. Although the overall risk of fractures in diabetic women did not differ significantly from non-diabetic women (HR=1.37, 95%CI 0.89 to 2.09), the difference had a two-fold increase and was statistically significant after 2,000 days (HR=2.01, 95%CI 1.21 to 3.35), indicating a different hazard at different stages of diabetes.Conclusion Our findings suggest that type II diabetes may not be clearly associated with osteoporosis, it increases a site-specific fracture risk at least in the hip. In addition, the overall fracture risk appears to increase in a time-dependent manner.
Abstract Dual-blade plate is widely used in reconstruction of anterior stability of spine. Two hundred and ninety-eight cases were followed up since 1984. Among them, 181 cases were fractureof thoracolumbar spine; 63 cases were tuberculosis of thoracolumbar spine; 43 cases were tumor of thoracolumbar spine; 5 cases were spondylisthesis of lumbar spine; 2 cases were ankylosing spondylitis accompanied with gibbosity; 2 cases were adolescent vertebral epiphysis; I case was hemivertebra; I case was dysplasia of the first lumbar vertebra acompanied with gibbosity. Most cases were successful following operation, but in some cases, the results were unsuccessful, mainly due to the position of the dualblade plate in the vertebral body was not satisfactory. The mistakes most commonly occurred were one or two blades, or a part of the blade going into the intervertebral space, and less commonly seen was deviation of the dual -blade plate from itscorrect orientation or a little side-bent of the blade. Split of the vertebra and fall off of the dual-blade plate were happened in few cases. The causeswere analyzed and ways of prevention were provided in this article.
Methods of evidence-based medicine were used to discuss the drug treatment of postmenopausal osteoporosis. After clinical problems were put forward, we searched for and assessed the evidence. A rational treatment plan for osteoporosis patients with fractures was developed according to the results of systematic reviews and Meta-analysis.
Objective To analyze the effectiveness of volar locking compression plate (LCP) and radial styloid process plate for the treatment of type C fractures of the distal radius. Methods Between May 2010 and May 2011, 24 cases of type C fractures of the distal radius were treated, including 8 males and 16 females with an average age of 52 years (range, 23-73 years). Injury was caused by falling in 20 cases and by traffic accident in 4 cases. All were fresh closed fractures. The locations were the left side in 15 cases and the right side in 9 cases. According to AO typing, there were 16 cases of type C2 and 8 cases of type C3. The preoperative palmar tilt angle ranged from — 60 to 25° (mean, — 45.3°); the preoperative ulnar inclination angle ranged from — 16 to 13° (mean, 8.2°); and the preoperative radial length shortening was 8-18 mm (mean, 12 mm). The time from injury to operation was 3-10 days (mean, 5.2 days). Results All operation incisions healed primarily. All patients were followed up 9-16 months (mean, 13.5 months). The healing time of fracture was 8-12 weeks (mean, 10.2 weeks). The articular surface was smooth and the radial length was recovered. The postoperative palmar tilt angle ranged from 8 to 15° (mean, 12.3°); the postoperative ulnar inclination angle ranged from 18 to 26° (mean, 22.3°). No loss of reduction, refracture, or carpal tunnel syndrome occurred during follow-up. The average range of motion of the wrist was 45.3° (range, 30-70°) in dorsal extension, was 50.2° (range, 26-78°) in palmar flexion, was 13.5° (range, 8-25°) in radial inclination, was 23.6° (range, 15-32°) in ulnar inclination, was 65.7° (range, 35-90°) in pronation, and was 72.5° (range, 20-90°) in supination at last follow-up. According to the wrist function by Gartland-Werley scoring, the results were excellent in 12 cases, good in 8 cases, and fair in 4 cases; and the excellent and good rate was 83.3%. Conclusion Treatment of type C fractures of the distal radius with volar LCP and radial styloid process plate can reconstruct normal anatomic structures and get good functional recovery.