Abstract:Proximal femur fractures represent a major healthcare problem in the aging society. High rates of post-operative infections are linked to risk factors that seem to affect local microcirculation. Patterns and time courses of alterations in microcirculation have, however, not been previously investigated. The aim of this prospective cohort study was to evaluate perioperative changes in microcirculation after trochanteric femur fractures using non-invasive laser-Doppler spectrophotometry to analyze how oxygen sat… Show more
“…The University Hospital IRB (reference number EK006/11, date of approval: 15 April 2011) approved the study protocol. This prospective cohort study was registered on www.ClinicalTrials.gov (number NCT01264172, date 21 July 2010) with the title "Identification of Microcirculation and Inflammation after Minimally-invasive Osteosynthesis of the Proximal Femur" (MicroProxFem) [13]. Written informed consent was collected in accordance with the Declaration of Helsinki.…”
Section: Methodsmentioning
confidence: 99%
“…Furthermore, microcirculation could potentially be impaired by the pull on the soft-tissue and compression of blood vessels, as well as by a release of vasoactive factors from the fracture site. Ganse et al [13] published the first study to measure and show changes in microcirculation after CRIF of trochanteric femur fractures and their relation to risk factors, and the type of implant. Significant differences in the parameters of microcirculation were found comparing the healthy and the injured leg, as well as throughout the course of the post-operative period [13].…”
Section: Introductionmentioning
confidence: 99%
“…Decreases in blood supply and venous outflow diminish oxygen supply and cause hypoxia, acidosis, collection of metabolites, and oxidative/nitroxidative stress and, subsequently, lead to Ganse et al [13] published the first study to measure and show changes in microcirculation after CRIF of trochanteric femur fractures and their relation to risk factors, and the type of implant. Significant differences in the parameters of microcirculation were found comparing the healthy and the injured leg, as well as throughout the course of the post-operative period [13]. Microcirculation plays an important role in keeping the local environment optimal for tissue healing.…”
Section: Introductionmentioning
confidence: 99%
“…Ganse et al [ 13 ] published the first study to measure and show changes in microcirculation after CRIF of trochanteric femur fractures and their relation to risk factors, and the type of implant. Significant differences in the parameters of microcirculation were found comparing the healthy and the injured leg, as well as throughout the course of the post-operative period [ 13 ].…”
Section: Introductionmentioning
confidence: 99%
“…Microcirculation plays an important role in keeping the local environment optimal for tissue healing. Decreases in blood supply and venous outflow diminish oxygen supply and cause hypoxia, acidosis, collection of metabolites, and oxidative/nitroxidative stress and, subsequently, lead to poor tissue healing, impairment of the immune system, and possibly even cell death and necrosis [ 13 , 14 , 15 ]. Impairment of the local immune system promotes bacterial growth and inflammation [ 14 ].…”
Background and Objectives: Wound infections provoked by alterations in microcirculation are major complications in the treatment of trochanteric femur fractures. Surgical fracture fixation on a traction table is the gold standard for treatment, but the effect on tissue microcirculation is unknown. Microcirculation could be impaired by the pull on the soft-tissue or by a release of vasoactive factors. We hypothesized that intraoperative traction impairs soft-tissue microcirculation. Materials and Methods: In 22 patients (14 women, eight men), average age 78 years (range 36–96 ± 14), with trochanteric femur fractures, non-invasive laser-Doppler spectrophotometry was used to assess oxygen saturation, hemoglobin content, and blood flow in the skin and subcutaneous tissue before and after application of traction. Measurements were recorded in nine locations around the greater trochanter at a depth of 2, 8, and 15 mm before and after fracture reduction by traction. Results: No differences were found in any depth with traction compared to without (oxygen saturation: p = 0.751, p = 0.308, and p = 0.955, haemoglobin content: p = 0.651, p = 0.928, and p = 0.926, blood flow: p = 0.829, p = 0.866, and p = 0.411). Conclusion: In this pilot study, the application of traction does not affect skin and subcutaneous microcirculation in the surgery of proximal femur fractures.
“…The University Hospital IRB (reference number EK006/11, date of approval: 15 April 2011) approved the study protocol. This prospective cohort study was registered on www.ClinicalTrials.gov (number NCT01264172, date 21 July 2010) with the title "Identification of Microcirculation and Inflammation after Minimally-invasive Osteosynthesis of the Proximal Femur" (MicroProxFem) [13]. Written informed consent was collected in accordance with the Declaration of Helsinki.…”
Section: Methodsmentioning
confidence: 99%
“…Furthermore, microcirculation could potentially be impaired by the pull on the soft-tissue and compression of blood vessels, as well as by a release of vasoactive factors from the fracture site. Ganse et al [13] published the first study to measure and show changes in microcirculation after CRIF of trochanteric femur fractures and their relation to risk factors, and the type of implant. Significant differences in the parameters of microcirculation were found comparing the healthy and the injured leg, as well as throughout the course of the post-operative period [13].…”
Section: Introductionmentioning
confidence: 99%
“…Decreases in blood supply and venous outflow diminish oxygen supply and cause hypoxia, acidosis, collection of metabolites, and oxidative/nitroxidative stress and, subsequently, lead to Ganse et al [13] published the first study to measure and show changes in microcirculation after CRIF of trochanteric femur fractures and their relation to risk factors, and the type of implant. Significant differences in the parameters of microcirculation were found comparing the healthy and the injured leg, as well as throughout the course of the post-operative period [13]. Microcirculation plays an important role in keeping the local environment optimal for tissue healing.…”
Section: Introductionmentioning
confidence: 99%
“…Ganse et al [ 13 ] published the first study to measure and show changes in microcirculation after CRIF of trochanteric femur fractures and their relation to risk factors, and the type of implant. Significant differences in the parameters of microcirculation were found comparing the healthy and the injured leg, as well as throughout the course of the post-operative period [ 13 ].…”
Section: Introductionmentioning
confidence: 99%
“…Microcirculation plays an important role in keeping the local environment optimal for tissue healing. Decreases in blood supply and venous outflow diminish oxygen supply and cause hypoxia, acidosis, collection of metabolites, and oxidative/nitroxidative stress and, subsequently, lead to poor tissue healing, impairment of the immune system, and possibly even cell death and necrosis [ 13 , 14 , 15 ]. Impairment of the local immune system promotes bacterial growth and inflammation [ 14 ].…”
Background and Objectives: Wound infections provoked by alterations in microcirculation are major complications in the treatment of trochanteric femur fractures. Surgical fracture fixation on a traction table is the gold standard for treatment, but the effect on tissue microcirculation is unknown. Microcirculation could be impaired by the pull on the soft-tissue or by a release of vasoactive factors. We hypothesized that intraoperative traction impairs soft-tissue microcirculation. Materials and Methods: In 22 patients (14 women, eight men), average age 78 years (range 36–96 ± 14), with trochanteric femur fractures, non-invasive laser-Doppler spectrophotometry was used to assess oxygen saturation, hemoglobin content, and blood flow in the skin and subcutaneous tissue before and after application of traction. Measurements were recorded in nine locations around the greater trochanter at a depth of 2, 8, and 15 mm before and after fracture reduction by traction. Results: No differences were found in any depth with traction compared to without (oxygen saturation: p = 0.751, p = 0.308, and p = 0.955, haemoglobin content: p = 0.651, p = 0.928, and p = 0.926, blood flow: p = 0.829, p = 0.866, and p = 0.411). Conclusion: In this pilot study, the application of traction does not affect skin and subcutaneous microcirculation in the surgery of proximal femur fractures.
Bone tissues blood circulation and microcirculation are critical to its metabolic and reparative processes. Without the participation of the bone microcirculatory tissue system, it is difficult to exchange oxygen and carbon dioxide, transport of nutrients, and excrete metabolic products. The regeneration of bone tissue is characterized by the pairing of angiogenesis and osteogenesis, which allows the use of microcirculation indicators as additional criteria for the state of reparative processes. Non-invasive approaches for detecting the state of peripheral circulation and microcirculation, which would enable assessing the dynamics of the vascular factor in bone pathology, including after fractures, are most practical in the clinic.
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