• Journal of Veterinary Clinics
• /
• v.25 no.3
• /
• pp.218-220
• /
• 2008

A 1.4 kg adult great homed owl was presented to the University of Missouri-Columbia Veterinary Teaching Hospital after being found by the side of the highway. Physical examination revealed soft tissue injuries to the left wing and leg, and good body condition (body score 4/5). The radiographs revealed comminuted fracture of the diaphysis of the left tibiotarsus (severe) and ulna (mild). Closed reduction of the fracture was performed to the left tibiotarsus and ulna. System combining an intramedually (IM) Kirschner pin, IM Kirschner pin for external skeletal fixation, and polymethylmethacrylate was used for fracture repair. At 13 weeks, radiographs revealed that bridging callus was well formed over cortices of the fracture area. No physical, behavioral, or other assessable impairment was found during the rehabilitation period.

• The Korean Journal of Ceramics
• /
• v.7 no.1
• /
• pp.41-44
• /
• 2001

A composite of $Ca_3$(PO$_4$)$_2$ and MgAl$_2$O$_4$ spinel is biologically active and has enduring strength. Its strength depends on the spinel phase. The flaws in the spinel depend on the grain size of the calcium phosphate phase and are not altered by dissolution. The calcium phosphate, ${\alpha}$ tri-calcium phosphate, controls the tissue response. Bone bonds to the implant. A design for a bone graft as a replacement for a section of the diaphysis of a canine femur provides for tensile, compressive, torsional and bending load; and for the physiological processes of bonding and remodeling. A bone plate, used to stabilize the implant at time of surgery was removed after about one year. Over seven years of service have been achieved without internal or external fixation.

• Structural Engineering and Mechanics
• /
• v.24 no.1
• /
• pp.19-29
• /
• 2006

The evolution process of an initially homogeneous bone structure under axial and transverse loads is investigated in this paper. The external loads include axial and external lateral pressure, electric, magnetic and thermal loads. The theoretical predictions of evolution processes are made based on the adaptive elasticity formulation and coupled thermo-magneto-electro-elastic theory. The adaptive elastic body, which is a model for living bone diaphysis, is assumed to be homogeneous in its anisotropic properties and its density. The principal result of this paper is determination of the evolution process of the initially homogeneous body to a transversely inhomogeneous body under the influence of the inhomogeneous stress state.

• Journal of Veterinary Clinics
• /
• v.20 no.3
• /
• pp.345-350
• /
• 2003

We were preferred bovine cortical bone to the others in xenobonegrafts for human and small animals, because those were not limited to supply and have sufficient size for bone transplantation. The strength (ST) and stiffness (SF) of cortical bone in bone grafts were very important. The strength and stiffness of cortical bone were much difference according to position of long bone in bovine limbs because which were biomechanical different to bear body weight. Therefore, we determinated by three bending point test methods the strength and stiffness of cortical bone which were collected in diaphysis of humerus, radius, femur and tibia of bovine. In the results, the strengths and stiffness among these were highest in radius by ST: 253.84$\pm$40.80 MPa, SF: 7.89$\pm$1.91 Gpa and lowest in humerus by ST: 185.69$\pm$28.54 MPa, SF: 6.21$\pm$1.22 Gpa.

• Clinical and Experimental Reproductive Medicine
• /
• v.49 no.3
• /
• pp.215-218
• /
• 2022

Herein, we report an exceptionally rare case of a 25-year-old woman with cloacal exstrophy/omphalocele-exstrophy-imperforate anus-spinal defects (OEIS) syndrome achieving a viable pregnancy despite many gastrointestinal and genitourinary malformations and multiple respective corrective operations. The patient was born with two vaginas, two uteruses, four ovaries, an imperforate anus, a large omphalocele including bowel and bladder exstrophy, and diaphysis of the pubic rami. This patient is the only documented OEIS patient not to have tethered spinal cord as an anomaly, perhaps contributing to her successful pregnancy. After experiencing preeclampsia with severe features at 35 weeks, the baby was born via cesarean section.

• Journal of Veterinary Science
• /
• v.24 no.2
• /
• pp.28.1-28.7
• /
• 2023

A three-year-old female spayed Lurcher was referred for the treatment of a highly comminuted distal tibial articular fracture. Resection of the area of comminution with a transverse osteotomy of the tibial diaphysis and talar ridges was performed, followed by modified pantarsal arthrodesis and a calcaneotibial screw. The treatment resulted in 7 cm of tibial shortening, equating to a 28% reduction in the total tibial length. Radiographic union of the arthrodesis was successful. Fair use of the pelvic limb was documented long-term. Combined acute limb shortening and modified pantarsal arthrodesis resulted in an acceptable outcome and could be considered in cases of highly comminuted distal tibial fractures.

• Structural Engineering and Mechanics
• /
• v.60 no.3
• /
• pp.405-412
• /
• 2016

Bone is a living material with a complex hierarchical structure that gives it remarkable mechanical properties. Bone constantly undergoes mechanical. Its quality and resistance to fracture is constantly changing over time through the process of bone remodeling. Numerical modeling allows the study of the bone mechanical behavior and the prediction of different trauma caused by accidents without expose humans to real tests. The aim of this work is the modeling of the femur fracture under static solicitation to create a numerical model to simulate this element fracture. This modeling will contribute to improve the design of the indoor environment to be better safe for the passengers' transportation means. Results show that vertical loading leads to the femur neck fracture and horizontal loading leads to the fracture of the femur diaphysis. The isotropic consideration of the bone leads to bone fracture by crack propagation but the orthotropic consideration leads to the fragmentation of the bone.

• Journal of Acupuncture Research
• /
• v.18 no.1
• /
• pp.61-75
• /
• 2001

Objectives : This study was designed to evaluate on the effects of the Carthami semen Cervi pomtotrichum cornu Hominis placenta aquacupuncture on the osteoporosis in the rats Materials and Methods : In order to induce estrogen deficient osteoporosis, ovariectomy was done on rats. Then aquacupunctures were injected into the pai shu points corresponding to urinary bladder meridian of human body in experimental groups. And such indexes were measured as the change of body weight, bone mineral density, histological change of tibia, and levels of osteocalcin, bone alkaline phosphatase, calcium, phosphorus in serum. Results : 1. Significant changes of trabecular area % in epiphysis of tibia were shown between control group and experimental group II and between experimental group I and group II. 2. Significant changes of trabecular area % in diaphysis of tibia were shown between control and experimental groups. 3. Significant changes of serum osteocalcin were shown between control group and experimenta group I . 4. Significant changes of levels of serum bone alkaline phosphatase were shown between control group and experimental group I and II. Conclusions : The Carthami semen Cervi pomototrichum cornu Hominis placenta aquacupuncture is effective to estrogen deficient osteoporosis, ovariectomy was done on rats.

• The Journal of Korean Physical Therapy
• /
• v.21 no.4
• /
• pp.97-102
• /
• 2009

Purpose: The purpose of this study was to investigate the effects of low intensity pulsed ultrasound on TGF-$\beta$1 expression and healing of rat femur penetrating fractures. Methods: Rats were anesthetized with ketamine and xylazine. Using aseptic technique, we exposed the lateral right femoral diaphysis with removal of the periosteum. We made one hole along its long axis with an electrically-driven 1.8 mm diameter drill bit. Postoperatively, rats were divided into two groups (a control group, n=15; an experimental group, n=15). The experimental group was treated with low intensity pulsed ultrasound (pulse rate: 1:4, 0.5 W/$cm^2$, 10 minutes, 1 time per day) for 3 weeks. The control group was treated with sham ultrasound (with the US unit turned off). Results: The experimental group achieved more callus formation and TGF-$\beta$1 expression than the control group at the $7^{th}$, $14^{th}$ and $21^{st}$ days after low intensity pulsed ultrasound treatment. Conclusion: This study suggests that low intensity pulsed ultrasound facilitates bone fracture repair, possibly via increased TGF-$\beta$1 expression.

• Biomaterials and Biomechanics in Bioengineering
• /
• v.3 no.2
• /
• pp.71-84
• /
• 2016

The finite element method is wide used in simulation in the biomechanical structures, but a lack of studies concerning finite element mesh quality in biomechanics is a reality. The present study intends to analyze the importance of the mesh quality in the finite element model results from humeral structure. A sensitivity analysis of finite element models (FEM) is presented for the humeral bone and cartilage structures. The geometry of bone and cartilage was acquired from CT scan and geometry reconstructed. The study includes 54 models from same bone geometry, with different mesh densities, constructed with tetrahedral linear elements. A finite element simulation representing the glenohumeral-joint reaction force applied on the humerus during $90^{\circ}$ abduction, with external load as the critical condition. Results from the finite element models suggest a mesh with 1.5 mm, 0.8 mm and 0.6 mm as suitable mesh sizes for cortical bone, trabecular bone and humeral cartilage, respectively. Relatively to the higher minimum principal strains are located at the proximal humerus diaphysis, and its highest value is found at the trabecular bone neck. The present study indicates the minimum mesh size in the finite element analyses in humeral structure. The cortical and trabecular bone, as well as cartilage, may not be correctly represented by meshes of the same size. The strain results presented the critical regions during the $90^{\circ}$ abduction.