Henning Windhagen

..Specifically, the concept is introduced of a "navigator" assistant who operates the navigation system during surgery while the surgeon concentrates on the primary steps of surgery...

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..Therefore, our method may be a reliable tool for future quantitative monitoring of healing progress in patients with healing bones or in animal studies addressing treatments to increase bone formation in long-bone defects...

..The results indicate a characteristic pattern of osteoblast cellular activation during distraction osteogenesis with possible consequences for the timing of treatment...

..Collagen carriers provided both a higher practicability for injection procedures and a higher efficacy...

..However, as the splint still incapacitates child movements the research question remains whether the physiologically progressing maturation of hips can be significantly altered using such abduction splints for walking children...

..Therefore, proximal load transfer and physiological bone remodelling around the Bicontact® stem appeared to be achieved...

..Particularly in orthopedic research magnesium is interesting because of its mechanical properties close to those of natural bone, the prevention of both stress shielding and removal of the implant after surgery...

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..This is in contrast to existing studies. In addition, this study showed that in cases of total hip replacement, no problems appeared during explantation of the tantalum rod...

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..The purpose of this study was to validate the implant design by direct acquisition of bone remodelling data from total hip arthroplasty (THA) recipients using dual-energy X-ray absorptiometry (DEXA)...

..In addition, it was analyzed whether covalent linkage of Bone Morphogenetic Protein 2 (BMP-2) to the copolymer layer enhances bone formation...

..Nevertheless, it shows excellent biocompatibility, good osteoconductive characteristics and may represents a useful alternative to autogenous graft...

..The innovative of this technique compared to existing methods is the fact that it allows monitoring forces during physiological motion...

..In conclusion, core decompression using small drill holes seems to be superior compared to the tantalum implant and to conventional core decompression...

..In cases with minor cortical defects, the use of primary stems in revision surgery has also been described by some authors...

..We conclude that no skin sensitizing potential were detected for standard materials as well as for all tested magnesium alloys by the used methods...

..002 mm (0.144 mm) and -0.078 degrees (0.782 degrees ). The results suggest that MBRSA can be used interchangeably with the marker-based method and that the advantages of MBRSA do not come at the cost of a loss in accuracy...

..This trial demonstrates good clinical and radiological midterm results for the Delfi M prosthesis. Limitations of this study are a small sample size and a follow-up time of 3 years at only one timepoint...

..The objective of this study was to determine whether the occurrence of osteonecrosis of the femoral head (ONFH) correlates with changes in bone turnover markers...

..A maximum load capacity of 28 ± 7.6 N/h was determined. Our biomechanical data suggests that this biodegradable screw provides a promising bone-screw-fixation and has great potential for medical application...

..The treatment of severe foot deformities in children or adolescents is complex and demanding to the surgeon. This paper describes the technical strategy of using a Taylor spatial frame and reports on the functional outcome...

..The results suggest that this measurement device has the ability to monitor the healing process of bone and to analyse the influence of degradable implants on the mechanical behaviour of bone or bone metabolism effecting pharmaceutics...

..Therefore lateral retinacular release should be considered carefully in cases of patellar instability...

..The objective of this study was to investigate the effect of the amount of tibiofemoral slope on the posterior cruciate ligament load and tibiofemoral contact stress after total knee arthroplasty under isokinetic in vitro conditions...

..The computed results are augmented for results obtained from clinical experience...

..Cementless hip resurfacing might not increase the risk of fracturing the cancellous femoral head during implantation in a cadaveric μ-CT study...

..The purpose of the study was to monitor the periprosthetic bone mineral density (BMD) in a prospective two-year follow-up dual-energy X-ray absorptiometry (DEXA) study...

..This uncertainty exists due to the lack of studies analysing contemporary short stem arthroplasty in osteonecrosis...

..This study suggests that rhBMP-2 optimizes the trabecular microarchitecture of the regenerate, which might explain the advanced mechanical integrity of newly formed bone under rhBMP-2 treatment...

..Thus, the data suggest that the quadriceps lever arm was improved, which might have positive effect in mobilization of patients after TKA...

..Imageless navigation may lead to a reduction in the length of the learning curve for surgeons beginning to perform THAs, improvement in the surgeon's ability to perform this procedure safely, and minimization of outliers...

..The most effective surgical treatment for traumatic posterior shoulder instability remains unclear...

..In this study, the influence of bone morphogenetic protein-2 (rhBMP-2) and transforming growth factor β2 (TGF-β2) on implant osseointegration was investigated...

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..The surgeon should consider these muscle responses and individually discuss a two-stage treatment or additional muscle tendon releases to minimize the risk of muscle damages...

..This fact, the lower BMD in the proximal femoral neck (R3) and the individual expansion of the osteonecrotic region should be considered when planning resurfacing arthroplasty for femoral head necrosis...

..Therefore, we recommend a tourniquet release after wound closure to reduce the duration of TKA procedure and to avoid possible risks of extended anaesthesia...

..The results of this study suggest, that the conclusions drawn from current ASTM standard in vitro corrosion tests cannot be used to predict in vivo corrosion rates of magnesium alloys...

..In this review the authors provide an overview of surface coatings with BMP-2 and their use in laboratory and experimental settings...

..The data suggest that contour reduction does not result in unacceptable loss of model-based RSA accuracy, and that the model-based method can be used interchangeably with the marker-based method for measuring tibial component migration...

..The results of this biomechanical study suggest the lag sign tests to be highly sensitive only for infraspinatus-teres minor muscle dysfunction...

..Further studies need to clarify the influence of compression and various mechanical and hydrostatic stress patterns over different periods of time...

..Nevertheless, Tutobone shows an excellent biocompatibility, good osteoconductive characteristics and may represent a useful alternative to autogenous graft...