The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
Willem Renooij - One of the best experts on this subject based on the ideXlab platform.
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Bone Healing During Lower Limb Lengthening by Distraction Epiphysiolysis
2015Co-Authors: Peter M. Van Roermund, Anne Hoekstra, Bart M. Ter Haar Romeny, Willem RenooijAbstract:A study of limb lengthening by distraction Epiphysiolysis in the rabbit tibia is presented. A special external distraction device was developed that allowed 10 mm lengthening of the leg. Bone formation in the elongated zone was studied by computed tomography and ["Te] méthylènediphosphonate (MDP) scintigraphy. Computed tomography showed bone formation proceeding for several weeks after the end of the distraction period, followed by a decrease in the amount of bone during a remodeling phase leading to the formation of a solid cortical structure. The uptake of ["TcJMDP increased parallel to, but proceeding the actual accretion of bone, followed by a decrease during the bone remodeling phase. Uptake of the tracer will partly reflect bone metabolism, but other factors, like trauma, determine much of the uptake. J NucÃ-Med 29:1259-1263,1988 ^.Significant inequality in limb length in childhood is a major problem in orthopedic management. Recently, remarkably good results were reported with distraction Epiphysiolysis as a new method of limb lengthening (7-5). Applying a gradually increasing distraction force t
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bone growth and remodeling after distraction Epiphysiolysis of the proximal tibia of the rabbit effect of electromagnetic stimulation
Clinical Orthopaedics and Related Research, 1991Co-Authors: P M Van Roermund, G J Schoonderwoert, C J W M Brandt, B M Ter Haar Romeny, A Hoekstra, S P N H Van Der Steen, J M M Roelofs, F Scholten, Walter J Visser, Willem RenooijAbstract:The effect of pulsed electromagnetic stimulation on bone formation was tested in a lower-limb-lengthening model in the rabbit. Limb lengthening was performed by distraction Epiphysiolysis. A specially designed external distraction device allowed 10 mm of lengthening of the tibia. Coils to generate a pulsed electromagnetic field were clipped onto the distractor. Stimulation started after a distraction period of three weeks and was continuous for 18 weeks. A control group received the same treatment without stimulation. Bone formation in the elongated zone was evaluated by computed tomography, scintigraphy, and histology. Bone healing involved accretion of callus followed by a process of remodeling, resulting in the formation of a solid cortex. The formation of a diaphysislike structure at the original site of the metaphysis progressed from the distal end of the elongated zone upward. Electromagnetic stimulation had no effect on the rate or extent of bone formation and remodeling.
I.-y. Ok - One of the best experts on this subject based on the ideXlab platform.
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Remodelling of the distal radius after Epiphysiolysis and lengthening
Journal of Bone and Joint Surgery-british Volume, 2007Co-Authors: I.-y. OkAbstract:Arrest of growth of the distal radius is rare but will produce deformity of the wrist. We corrected angular deformity and shortening of the distal radius by Epiphysiolysis and gradual lengthening without a corrective osteotomy.
P M Van Roermund - One of the best experts on this subject based on the ideXlab platform.
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bone growth and remodeling after distraction Epiphysiolysis of the proximal tibia of the rabbit effect of electromagnetic stimulation
Clinical Orthopaedics and Related Research, 1991Co-Authors: P M Van Roermund, G J Schoonderwoert, C J W M Brandt, B M Ter Haar Romeny, A Hoekstra, S P N H Van Der Steen, J M M Roelofs, F Scholten, Walter J Visser, Willem RenooijAbstract:The effect of pulsed electromagnetic stimulation on bone formation was tested in a lower-limb-lengthening model in the rabbit. Limb lengthening was performed by distraction Epiphysiolysis. A specially designed external distraction device allowed 10 mm of lengthening of the tibia. Coils to generate a pulsed electromagnetic field were clipped onto the distractor. Stimulation started after a distraction period of three weeks and was continuous for 18 weeks. A control group received the same treatment without stimulation. Bone formation in the elongated zone was evaluated by computed tomography, scintigraphy, and histology. Bone healing involved accretion of callus followed by a process of remodeling, resulting in the formation of a solid cortex. The formation of a diaphysislike structure at the original site of the metaphysis progressed from the distal end of the elongated zone upward. Electromagnetic stimulation had no effect on the rate or extent of bone formation and remodeling.
Kjeld Soballe - One of the best experts on this subject based on the ideXlab platform.
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implant survival after primary total hip arthroplasty due to childhood hip disorders results from the danish hip arthroplasty registry
Acta Orthopaedica, 2008Co-Authors: Theis Muncholm Thillemann, Alma B Pedersen, Soren Paaske Johnsen, Kjeld SoballeAbstract:Background Childhood hip disorders including acetabular dysplasia, congenital hip dislocation, Epiphysiolysis, and morbus Calve-Legg-Perthes are well-established risk factors for the development of early osteoarthritis of the hip. These patients have an increased risk of undergoing a total hip arthroplasty (THA) operation early in their life. However, there are very few data on implant survival in such patients.Methods We used data from the Danish Hip Arthroplasty Registry to identify patients who had been treated with a primary THA in Denmark between 1995 and 2005. Implant survival during early and late postoperative follow-up ( 6 months, respectively) was assessed for patients treated with a primary THA due to childhood hip disorders, and compared with implant survival for THA patients with primary osteoarthritis.Results 56,087 THA procedures included 53,694 (96%) hips with primary osteoarthritis, 890 (1.6%) with acetabular dysplasia, 565 (1.0%) with congenital hip dislocation, 267 (0.5%) ...
J Mayr - One of the best experts on this subject based on the ideXlab platform.
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detection of neonatal distal humerus Epiphysiolysis by ultrasound
Archives of Disease in Childhood, 2008Co-Authors: A Fette, J MayrAbstract:Reasons for impaired function of the upper extremity in the newborn are either congenital (eg, dysplasia) or caused by obstetric trauma such as clavicle fracture, humerus Epiphysiolysis, plexus palsy, or dislocated elbow joint. After an unsuccessful attempt to reduce her subluxated left elbow joint a 2-day-old baby was transfered to our department straight from the orthopaedic operating room table of a district hospital. On first examination the elbow joint was swollen, the range of movement painfully restricted and additionally a slight plexus palsy was observed. Dislocated, non-articulating elbow joint surfaces were detected in initial x ray films. Magnetic resonance imaging scans in this case were inconclusive in contrast to a non-incidental case in a 4-month-old baby, whereas ultrasound scans revealed the fracture line and slipped epiphysis in both cases. The dislocated epiphysis was reduced in analgosedation under ultrasound control before an 8-shaped plaster sling was applied. Two weeks later the sling was removed and physiotherapy started. Follow-up was done by ultrasound easily and exclusively. Three months later correct joint alignment and regular bony healing on x ray films and ultrasound scans. Only slightly restricted range of movement. In conclusion, especially in the neonatal case, ultrasound was the most valuable tool for diagnosis of the slipped distal humerus Epiphysiolysis making most benefit out of its advantages: bedside availability, dynamic mode, non-invasiveness, lack of radiation and avoidance of general anaesthesia.