Results of application of external fixation with different types of fixators

Introduction. Extra-focal or external fixation is the method of fracture fixation through the healthy part of the bone using pins or wires. Objective. The aim was to determine which external splints (Ortofix, Mitković, Charnley and Ilizarov) had the best biomechanical properties in primary stabilization of spiral, transverse and commutative bone fractures. Methods. To determine the investigation methodology of biomechanical characteristics of the external fixator we used mathematical and computer simulator (software), juvidur physical model and clinical examination. Results. Values of advancing fragments in millimetres obtained by the study of mathematical and computer simulator (software): Charnley - 0.080 mm, Mitković M 20 - 0.785 mm, Ilizarov - 2.245 mm and Ortofix - 1.400 mm. In testing the juvidur model the following values were obtained: the external fixator Mitković M20 - 1.380 mm, Ortofix - 1.470 mm, Ilizarov - 2.410 mm, and Charnley - 2.510 mm. Clinical research of biomechanical characteristics of the effect of vertical force yielded the following results: Mitković M20 - 0.89 mm, Ortofix - 0.14 mm, Charnley - 0.80 mm and Ilizarov - 1.23 mm. Conclusion. When determining the total number of the stability test splints under the effect of vertical force (compression) and force effect in antero-posterior, later-lateral plane of cross, spiral and comminuted long bone fractures, the best unified biomechanical stability was shown by the following external fixators: firstly, Mitković M20 (0.93mm), secondly, Charnley fixator (1.14 mm), thirdly, Ortofix (1.22 mm), and fourthly, Ilizarov (1.60 mm)

RELIABILITY AND VALIDITY OF CLINICAL AND ULTRASOUND EXAMINATIONS OF DEVELOPMENTAL HIP DYSPLASIA

Developmental dysplasia of the hip (DDH) is the most common congenital deformation of the musculoskeletal system and its successful treatment is closely related to early diagnosis. The study is aimed at examining the incidence of developmental dysplasia of the hip (DDH) and at analysing the validity of clinical examination, which is used for the early detection of DDH in the neonatal period, compared to ultrasound examination.The study involved 400 neonates born in the Banja Luka Region. A new questionnaire was open during the first regular ultrasound and clinical examination of the neonates’ hips and anamnestic and clinical data were recorded in it: the asymmetry of the gluteal, inguinal and femoral folds (Bade sign), the result of abduction testseparately for each hip, the Ortolani sign of luxation and the Palmen sign of reposition, then hip sonography. A Toshiba ultrasound machine with a 7.5 MHz linear probe was used. The method employed was Professor Reinhard Graf’s. Out of the total number of the children with a positive sonographic finding for DDH, 63.16% of them have one of the clinical signs of DDH. The ability of a clinical finding to identify those patients who do not have DDH and have a negative sonographic finding is 79.8%. Out of the total number of the examined children with a positive clinical finding, only 15.58% of them also have a positive sonographic finding for DDH. This research has showed that clinical examination of the hips is of low sensitivity, specificity and reliability, and that not all types of DDH can be detected. Clinical examination must remain an integral part of every infant’s examination, but it constitutes a complementary diagnostic procedure to ultrasound examination. The ultrasound examination of DDH has created new possibilities and has filled the void that existed due to the deficiency of clinical tests, and at the same time it has reduced the number of X-ray examinations of the hips. This research has confirmed that clinical examination of the hips does not meet the screening criteria. It must remain an integral part of an infant’s examination because it, among other things, provides the information which enables the orthopaedic surgeon to choose the most beneficial therapeutic procedures in DDH treatment

EXPERIENCES IN TREATING LAUGIER'S FRACTURES

Laugier's fractures are rare because they are located deep in the elbow joint and are thus protected from any direct trauma. This study shows two patients whose Laugier's fractures were surgically treated. Surgical interventions were performed using the Campbell surgical approach. The ulnar nerve was mobilised for a distance of 12 cm, and then a tenotomy of the triceps brachii muscle and a posterior capsulectomy of the elbow joint were performed. A temporary repositioning followed by a permanent fixation were undertaken using two 3.2mm screws. The screws were inserted from the back, through the posterolateral and posteromedial pillars of the humeral condyle, to the front and medially. The tip of the screw was kept subchondrally in the bone of the humeral capitellum or trochlea and did not go through the cartilage. The stitches of the wound were done by layers, and prior to that a transposition of the ulnar nerve was performed medially. A plaster cast was worn on the upper arm for three weeks, with mandatory prophylaxis of periarticular ossification by taking indomethacin, 25mg three times a day. Upon removing the plaster cast, the patients underwent outpatient physical therapy for two weeks followed by inpatient physical therapy with full weight-bearing. Laugier's fractures have been insufficiently described in the literature. Surgical treatment does not have an alternative, and timely diagnosis and surgical and physical therapy yield, according to the Mayo elbow performance index, good results

emergent hybrid external fixation for tibial pilon fractures in adults

Abstract Objective To investigate that if the hybrid external fixation is the definitive treatment and management of tibial extra articular and intra-articular pilon fractures of the adult in emergency. Methods We treated 237 cases of pilon fractures using hybrid external fixation with or without minimal osteosynthesis from February 1999 to December 2014. All fractures were classified according to the Association for the Study of Internal Fixation. The three groups were represented by 108 patients (45.5%) for the Type A; 75 patients (31.8%) for Type B and 54 patients (22.7%) for Type C. Road accidents [118 patients (50.0%)] were the most common cause of tibial pilon fractures. Results According to a mean follow-up of 7.3 years we had bone healing after 4.8 months from surgery in the 61.18% of the patients. The results were subjectively excellent, while the 54.00% were objectively excellent according to Ovadia and Beals score, and the results showed 29 complications. Conlusions From our data hybrid external fixation with or without minimal fixation is a good surgical method to treat pilon fractures

Treating and management in acute Laugier's fracture: a case report

Abstract Laugier's fractures are rare because they are located deep in the elbow joint and are thus protected from any direct trauma. Laugier's fractures have been insufficiently described in the literature. Surgical treatment does not have an alternative, and timely diagnosis and surgical and physical therapy. We presented a case report of a 23 years' old man, sustained a Laugier's fracture in June 2012 after falling from motocycle (low energy trauma) and hit with his flexed elbow against the street

METHOD OF CHOISE IN THE TREATMENT OF FEMORAL NECK FRACTURES IN SUBJECTS AGED OVER 65

Of all femoral bone injuries, femoral neck fractures cause the largest number of surgical, medical and economic problems.The research aimed to determine, within the tested sample, the benefits of the treatment of femoral neck fractures with primary femoral prosthesis.The study involved 102 patients. The following parameteres were monitored: radiographic processing, BMD, times of sustaining the fracture, admission and surgical treatment, preoperative and postoperative complications, etc.The average age of patients was 86.2 years. FNFs (femoral neck fractures) were classified using Garden’s classification: Type I accounted for 0% of femoral neck fractures, Type II for 5.88%, Type III for 50.98% and Type IV for 43.14%. The time interval between injury and surgery amounted to 3.9 days and chronic illnesses were reported in 50% of the patients. Fractures were treated with internal fixation: 22.54% with Müller plate, 2.94% with screws; and with endoprostheses: Austin-Moore partial endoprosthesis was used in 50.98% of the patients, cemented total endoprosthesis in 4.9%, and noncemented total prosthesis in 14.7%. General inhalation anaesthesia was used in 37.25% and spinal anaesthesia in 64.75% of the patients. 31.37% of the patients experienced complications. There were significant statistical differences in the time of verticalisation and full weight-bearing between the patients treated with endoprosthesis and those treated with internal fixation.In less physically active elderly patients secondary surgeries can be avoided byperforming primary arthroplasty. With displaced fractures there is a high risk of femoral head necrosis and pseudoarthrosis. In patients under the age of 65 who can endure a secondary operation in case of failure, the treatment of choice is internal fixation.Patients over the age of 65 need to be treated with primary arthroplasty in order to avoid secondary operations

Comparison of biomechanical stability of osteosynthesis materials in long bone fractures

Aim To calculate stress and deformation under the force of pressure and bending in the dynamic compression plate (DCP), locking compression plate (LCP), selfdynamisable internal fixator (SIF) and locked intramedullary nail (LIN) in the models of juvidur, beef tibia bone (cadaver) and software of bone model simulator. Methods Juvidur and bone models were used for the experimental study, static tests were performed with SHIMADZU AGS-X tester. CATIA software was used to create a 3D model for the SCA simulator, while software ANSYS to calculate the tension and deformation for compressive and bending forces. Stress and deformation analysis was performed with the use of Finite Element Analysis (FEA). Results Weight coefficients of research methods were different (juvidur=0.3; cadaver=0.5; SCA Simuator=0.2), and weight coefficients of the force of pressure Kp=0.5 and bending forces in one plane K1=0.25 and K2=0.25 in another plane, the overall result on the dilatation of DCP, LCP, LIN and SIF on juvidur and veal cadaver models showed that the first ranking was the LIN with a rank coefficient KU-LIN = 0.0603, followed by the IFM with KU-IFM = 0.0621, DCP with KU-DCP = 0.0826 and LCP with KU-LCP = 0.2264. Conclusion Dilatation size did not exceed 0.2264 mm, hence the implants fulfilled biomechanical conditions for the internal stabilization of bone fractures. Prevalence goes to the locked intra-medullar nailing and Mitković internal fixator in the treatment of diaphyseal, transversal, comminuted fractures in relation to DCP and LCP

Is the early percutaneous spine total care to treat the polytrauma patient a good way?

Abstract The "ideal" timing and modality of fracture fixation for unstable thoracolumbar spine fractures in multiply injured patients remains controversial. The concept of "damage control orthopedics" is expressed. We presented a case report of a 27 years' old male who sustained a multilevel spine fractures associated a floating knee (Fraser's Type A), ulna fracture and carpal scaphoid fracture in July 2014 after car accident (very high energy trauma). All these fractures were treated in early total care. We reported a case control to discuss about the early spinal total care associated at orthopedic total care in patients with multiple trauma

Intramedullary nail in the treatment of pertrochanteric fractures in elderly patients

Introduction. Intramedullary nail is an important component of modern treatment of pertrochanteric femur fractures. Objective. In elderly population, pertrochanteric fractures treated with unreamed intramedullary nails cause less deep infections when compared to reamed intramedullary nails. Patients and Methods. From April, 2010 to May, 2012 at the Department of Orthopedics and Traumatology, Gaetano Rummo Hospital (Benevento, Italy), 156 patients with pertrochanteric fracture, average age 82.7 years (75-102 years), were treated. In the analyzed case, there were 90 females and 66 males with pertrochanteric fractures. The respondents were divided into two groups. The first group consisted of 78 respondents who were treated with reamed intramedullary nails and the second group of 78 respondents treated with unreamed intramedullary nails. Discussion. Infections are not the most common postoperative complications. The risk of infection is increased in patients with comorbidity and in cases when there is an empty space between the intramedullary nail fixation and bone. Proximal femoral fractures carry a high mortality, but its causes are unclear. Conclusion. Our research has shown that the application of unreamed intramedullary nails in the treatment of pertrochanteric femoral fractures reduces a mortality risk and risk of infection

A rare case of isolated trapezium fracture in motorcycle polytrauma patient in emergency department

Abstract Medical staff hardly recognize fractures of trapezium due to the small size and the complex anatomy of the wrist and the hand. Seventy percent of all carpal fractures are scaphoid's fractures. Only 0.4% of all carpal injuries are trapezial fractures. In this paper, we presented a case of a high speed trauma where there were only trapezial fractures. Origin, diagnosis, differential diagnosis, treatment and complications are evaluated and described