<abstract xmlns="http://www.w3.org/1999/xhtml"><sec id="j_jeb.4104_s_007_w2aab3b8d109b1b7b1aab1c15b1Aa"><h3>Introduction</h3><p>Bioelectrical impedance analysis (BIA) is in widespread use, but there is uncertainty about its validity in patients with metal implants or after acute hip fracture and surgery. We aimed to investigate the use of single frequency tetrapolar BIA in patients with hip fracture by answering the following questions: 1) Are BIA measurements affected by recent hip fracture and surgical repair? 2) Are BIA measurements affected by the presence of metal implants used in hip fracture surgery?</p></sec><sec id="j_jeb.4104_s_008_w2aab3b8d109b1b7b1aab1c15b2Aa"><h3>Setting</h3><p>Two hospitals in Bergen, Norway.</p></sec><sec id="j_jeb.4104_s_009_w2aab3b8d109b1b7b1aab1c15b3Aa"><h3>Participants</h3><p>A convenience sample of 203 acute hip fracture patients.</p></sec><sec id="j_jeb.4104_s_010_w2aab3b8d109b1b7b1aab1c15b4Aa"><h3>Methods</h3><p>Participants had their body composition measured by single frequency, tetrapolar BIA on the fractured and unfractured side of the body in the immediate postoperative period and at follow-up three months after hip fracture. Measurements from fractured and unfractured side and measurements in hospital and at follow-up were compared. BIA readings for hips treated with cannulated screws, compression hip screw and hip arthroplasty were compared.</p></sec><sec id="j_jeb.4104_s_011_w2aab3b8d109b1b7b1aab1c15b5Aa"><h3>Results</h3><p>Resistance was lower on the side of the fractured hip compared to the unfractured side postoperatively, but not at follow-up. BIA readings did not differ by type of surgical implant.</p></sec><sec id="j_jeb.4104_s_012_w2aab3b8d109b1b7b1aab1c15b6Aa"><h3>Conclusion</h3><p>Recent fracture and surgery influences single frequency tetrapolar BIA resistance. The presence of surgical implants in the hip do not affect BIA measurements. If BIA is used in acute hip fracture patients, the contralateral side to the fracture should be measured.</p></sec></abstract>

IntroductionBioelectrical impedance analysis (BIA) is in widespread use, but there is uncertainty about its validity in patients with metal implants or after acute hip fracture and surgery. We aimed to investigate the use of single frequency tetrapolar BIA in patients with hip fracture by answering the following questions: 1) Are BIA measurements affected by recent hip fracture and surgical repair? 2) Are BIA measurements affected by the presence of metal implants used in hip fracture surgery?SettingTwo hospitals in Bergen, Norway.ParticipantsA convenience sample of 203 acute hip fracture patients.MethodsParticipants had their body composition measured by single frequency, tetrapolar BIA on the fractured and unfractured side of the body in the immediate postoperative period and at follow-up three months after hip fracture. Measurements from fractured and unfractured side and measurements in hospital and at follow-up were compared. BIA readings for hips treated with cannulated screws, compression hip screw and hip arthroplasty were compared.ResultsResistance was lower on the side of the fractured hip compared to the unfractured side postoperatively, but not at follow-up. BIA readings did not differ by type of surgical implant.ConclusionRecent fracture and surgery influences single frequency tetrapolar BIA resistance. The presence of surgical implants in the hip do not affect BIA measurements. If BIA is used in acute hip fracture patients, the contralateral side to the fracture should be measured.

Bones, blood and steel: How bioelectrical impedance analysis is affected by hip fracture and surgical implants

Journal of Electrical Bioimpedance

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

IntroductionBioelectrical impedance analysis (BIA) is in widespread use, but there is uncertainty about its validity in patients with metal implants or after...

Bones, blood and steel: How bioelectrical impedance analysis is affected by hip fracture and surgical implants

Article Category: Articles

Published Online: Jul 06, 2017

Page range: 54 - 59

Received: Jan 14, 2017

DOI: https://doi.org/10.5617/jeb.4104

Keywords
Hip fracture, surgical implants, bioelectrical impedance analysis

© 2017 Ole Martin Steihaug, Bård Bogen, Målfrid Holen Kristoffersen and Anette Hylen Ranhoff, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Bones, blood and steel: How bioelectrical impedance analysis is affected by hip fracture and surgical implants

Article Category: Articles

Published Online: Jul 06, 2017

Page range: 54 - 59

Received: Jan 14, 2017

DOI: https://doi.org/10.5617/jeb.4104

KeywordsHip fracture, surgical implants, bioelectrical impedance analysis

© 2017 Ole Martin Steihaug, Bård Bogen, Målfrid Holen Kristoffersen and Anette Hylen Ranhoff, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Hip fracture, surgical implants, bioelectrical impedance analysis