| The effect on mechanical axis deviation of femoral lengthening with an intramedullary telescopic nail. | |
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MedLine Citation:
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PMID: 22933497 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Internal lengthening devices in the femur lengthen along the anatomical axis, potentially creating lateral shift of the mechanical axis. We aimed to determine whether femoral lengthening along the anatomical axis has an inadvertent effect on lower limb alignment. Isolated femoral lengthening using the Intramedullary Skeletal Kinetic Distractor was performed in 27 femora in 24 patients (mean age 32 years (16 to 57)). Patients who underwent simultaneous realignment procedures or concurrent tibial lengthening, or who developed mal- or nonunion, were excluded. Pre-operative and six-month post-operative radiographs were used to measure lower limb alignment. The mean lengthening achieved was 4.4 cm (1.5 to 8.0). In 26 of 27 limbs, the mechanical axis shifted laterally by a mean of 1.0 mm/cm of lengthening (0 to 3.5). In one femur that was initially in varus, a 3 mm medial shift occurred during a lengthening of 2.2 cm. In a normally aligned limb, intramedullary lengthening along the anatomical axis of the femur results in a lateral shift of the mechanical axis by approximately 1 mm for each 1 cm of lengthening. |
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Authors:
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R D Burghardt; D Paley; S C Specht; J E Herzenberg |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of bone and joint surgery. British volume Volume: 94 ISSN: 0301-620X ISO Abbreviation: J Bone Joint Surg Br Publication Date: 2012 Sep |
Date Detail:
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Created Date: 2012-08-30 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0375355 Medline TA: J Bone Joint Surg Br Country: England |
Other Details:
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Languages: eng Pagination: 1241-5 Citation Subset: AIM; IM |
Affiliation:
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AKK Altonaer Kinderkrankenhaus, Abteilung für Kinderorthopädie, Bleickenallee 38, 22763 Hamburg, Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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