Long-term outcome following additional rhBMP-7 application in revision surgery of aseptic humeral, femoral, and tibial shaft nonunion

Abstract Background Surgical revision concepts for the treatment of aseptic humeral, femoral, and tibial diaphyseal nonunion were evaluated. It was analyzed if the range of time to bone healing was shorter, and if clinical and radiological long-term outcome was better following application of additi...

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Main Authors: Simon Hackl, Christian Hierholzer, Jan Friederichs, Alexander Woltmann, Volker Bühren, Christian von Rüden
Format: Article
Language:English
Published: BMC 2017-08-01
Series:BMC Musculoskeletal Disorders
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12891-017-1704-0
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author Simon Hackl
Christian Hierholzer
Jan Friederichs
Alexander Woltmann
Volker Bühren
Christian von Rüden
author_facet Simon Hackl
Christian Hierholzer
Jan Friederichs
Alexander Woltmann
Volker Bühren
Christian von Rüden
author_sort Simon Hackl
collection DOAJ
description Abstract Background Surgical revision concepts for the treatment of aseptic humeral, femoral, and tibial diaphyseal nonunion were evaluated. It was analyzed if the range of time to bone healing was shorter, and if clinical and radiological long-term outcome was better following application of additional recombinant human Bone Morphogenetic Protein-7 (rhBMP-7) compared to no additional rhBMP-7 use. Methods In a retrospective comparative study between 06/2006 and 05/2013, 112 patients diagnosed with aseptic diaphyseal humerus (22 patients), femur (41 patients), and tibia (49 patients) nonunion were treated using internal fixation and bone graft augmentation. For additional stimulation of bone healing, growth factor rhBMP-7 was locally administered in 62 out of 112 patients. Follow-up studies including clinical and radiological assessment were performed at regular intervals as well as after at least one year following nonunion surgery. Results One hundred and two out of 112 (humerus: 19, femur: 37, tibia: 47) nonunion healed within 12 months after revision surgery without any significant differences between the cohort groups. According to the DASH outcome measure for the humerus (p = 0.679), LEFS for the femur (p = 0.251) and the tibia (p = 0.946) as well as to the SF-12 for all entities, no significant differences between the treatment groups were found. Conclusions Aseptic diaphyseal nonunion in humerus, femur, and tibia healed irrespectively of additional rhBMP-7 application. Moreover, the results of this study suggest that successful nonunion healing can be linked to precise surgical concepts using radical removal of nonunion tissue, stable fixation and restoration of axis, length and torsion, rather than to the additional use of signaling proteins. Trial registration This clinical trial was conducted according to ICMJE guidelines as well as to the approval of the National Medical Board (Ethics Committee of the Bavarian State Chamber of Physicians; TRN: 2016-104) and has been retrospectively registered with the German Clinical Trails Register (TRN: DRKS00012652 ).
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spelling doaj.art-a51d649d04bc4b4e930c41f6553c66c02022-12-22T01:36:39ZengBMCBMC Musculoskeletal Disorders1471-24742017-08-0118111010.1186/s12891-017-1704-0Long-term outcome following additional rhBMP-7 application in revision surgery of aseptic humeral, femoral, and tibial shaft nonunionSimon Hackl0Christian Hierholzer1Jan Friederichs2Alexander Woltmann3Volker Bühren4Christian von Rüden5Department of Trauma Surgery, BG Trauma Center MurnauDepartment of Trauma Surgery, University Hospital ZurichDepartment of Trauma Surgery, BG Trauma Center MurnauDepartment of Trauma Surgery, BG Trauma Center MurnauDepartment of Trauma Surgery, BG Trauma Center MurnauDepartment of Trauma Surgery, BG Trauma Center MurnauAbstract Background Surgical revision concepts for the treatment of aseptic humeral, femoral, and tibial diaphyseal nonunion were evaluated. It was analyzed if the range of time to bone healing was shorter, and if clinical and radiological long-term outcome was better following application of additional recombinant human Bone Morphogenetic Protein-7 (rhBMP-7) compared to no additional rhBMP-7 use. Methods In a retrospective comparative study between 06/2006 and 05/2013, 112 patients diagnosed with aseptic diaphyseal humerus (22 patients), femur (41 patients), and tibia (49 patients) nonunion were treated using internal fixation and bone graft augmentation. For additional stimulation of bone healing, growth factor rhBMP-7 was locally administered in 62 out of 112 patients. Follow-up studies including clinical and radiological assessment were performed at regular intervals as well as after at least one year following nonunion surgery. Results One hundred and two out of 112 (humerus: 19, femur: 37, tibia: 47) nonunion healed within 12 months after revision surgery without any significant differences between the cohort groups. According to the DASH outcome measure for the humerus (p = 0.679), LEFS for the femur (p = 0.251) and the tibia (p = 0.946) as well as to the SF-12 for all entities, no significant differences between the treatment groups were found. Conclusions Aseptic diaphyseal nonunion in humerus, femur, and tibia healed irrespectively of additional rhBMP-7 application. Moreover, the results of this study suggest that successful nonunion healing can be linked to precise surgical concepts using radical removal of nonunion tissue, stable fixation and restoration of axis, length and torsion, rather than to the additional use of signaling proteins. Trial registration This clinical trial was conducted according to ICMJE guidelines as well as to the approval of the National Medical Board (Ethics Committee of the Bavarian State Chamber of Physicians; TRN: 2016-104) and has been retrospectively registered with the German Clinical Trails Register (TRN: DRKS00012652 ).http://link.springer.com/article/10.1186/s12891-017-1704-0NonunionHumerusFemurTibiaRecombinant human bone morphogenetic protein-7 (rhBMP-7)Bone graft
spellingShingle Simon Hackl
Christian Hierholzer
Jan Friederichs
Alexander Woltmann
Volker Bühren
Christian von Rüden
Long-term outcome following additional rhBMP-7 application in revision surgery of aseptic humeral, femoral, and tibial shaft nonunion
BMC Musculoskeletal Disorders
Nonunion
Humerus
Femur
Tibia
Recombinant human bone morphogenetic protein-7 (rhBMP-7)
Bone graft
title Long-term outcome following additional rhBMP-7 application in revision surgery of aseptic humeral, femoral, and tibial shaft nonunion
title_full Long-term outcome following additional rhBMP-7 application in revision surgery of aseptic humeral, femoral, and tibial shaft nonunion
title_fullStr Long-term outcome following additional rhBMP-7 application in revision surgery of aseptic humeral, femoral, and tibial shaft nonunion
title_full_unstemmed Long-term outcome following additional rhBMP-7 application in revision surgery of aseptic humeral, femoral, and tibial shaft nonunion
title_short Long-term outcome following additional rhBMP-7 application in revision surgery of aseptic humeral, femoral, and tibial shaft nonunion
title_sort long term outcome following additional rhbmp 7 application in revision surgery of aseptic humeral femoral and tibial shaft nonunion
topic Nonunion
Humerus
Femur
Tibia
Recombinant human bone morphogenetic protein-7 (rhBMP-7)
Bone graft
url http://link.springer.com/article/10.1186/s12891-017-1704-0
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