ABSTRACT
Twenty patients were operated upon for heterotopic ossification around the elbow of neurogenic origin following intra-cranial trauma between 1993 and 1997. They did not receive any diphosphonates or radiotherapy. Pre-operative evaluation included a CT scan with enhancement using a dye injected intravenously and 3D reconstruction. Surgery was indicated in the presence of a clinical deficit in mobility or signs (clinical or electrical) of nerve compression. The average delay between the accident and the surgery was 34 months (5 months to 9 years). Associated procedure included lengthening of the brachialis (4 cases), lengthening of the triceps tendon (4 cases) and an anterior capsulotomy in 3 cases. 24 elbows were reviewed with an average follow-up period of 18 months (6 months to 4 years). In 58% of the cases, the result was very good (gain in mobility > 70%) while in the remaining 42% of cases, the improvement was between 40% and 70%. This study confirms the possibility of obtaining good results by excision of the masses of heterotopic ossification of neurogenic origin around the elbow before 1 year after the accident without the necessity of complementary treatment.
Subject(s)
Ankylosis/surgery , Arthropathy, Neurogenic/surgery , Brain Injuries/complications , Craniocerebral Trauma/complications , Elbow Joint/surgery , Osteotomy , Adult , Ankylosis/diagnostic imaging , Ankylosis/etiology , Arthropathy, Neurogenic/diagnostic imaging , Arthropathy, Neurogenic/etiology , Contrast Media , Elbow Joint/diagnostic imaging , Electromyography , Female , Follow-Up Studies , Humans , Image Processing, Computer-Assisted , Joint Capsule/surgery , Male , Median Neuropathy/etiology , Median Neuropathy/surgery , Middle Aged , Muscle, Skeletal/surgery , Nerve Compression Syndromes/etiology , Nerve Compression Syndromes/surgery , Radiographic Image Enhancement , Range of Motion, Articular , Tendons/surgery , Time Factors , Tomography, X-Ray Computed , Treatment Outcome , Ulnar Nerve Compression Syndromes/etiology , Ulnar Nerve Compression Syndromes/surgeryABSTRACT
Composite carbon/epoxy resin techniques for restorative dentistry have improved with the development of various composite resins classified according to fiber reinforcement, such as short fibers, woven materials, or long unidirectional fibers. This study of the mechanical properties with three-point flexion enabled comparison of the flexural strengths. The modulus of elasticity of different composite resin materials was determined so that the appropriate reinforced composite resin could be selected for specific clinical conditions.
Subject(s)
Aniline Compounds/chemistry , Carbon/chemistry , Composite Resins/chemistry , Dental Materials/chemistry , Epoxy Compounds/chemistry , Epoxy Resins/chemistry , Benzhydryl Compounds , Chemical Phenomena , Chemistry, Physical , Composite Resins/chemical synthesis , Elasticity , Epoxy Resins/chemical synthesis , Materials Testing , Porosity , Stress, Mechanical , Surface PropertiesABSTRACT
Hydro-alginates are a combination of reversible and irreversible hydrocolloids. These products are a material choice in fixed prosthodontics and removable partial denture due to their reliability and ease of use, depending on adequate utilization of the materials and on a perfect synchronization during the impression procedures.
