Impact of Internal Malrotation of the Femur Followed by Derotational Osteotomy as Demonstrated by 3D Gait Analysis: A Case Report. JBJS Case Connect 2022 Oct 01;12(4)
Date
03/03/2023Pubmed ID
36862105DOI
e22.00384Scopus ID
2-s2.0-85149345097 (requires institutional sign-in at Scopus site) 1 CitationAbstract
CASE: An 18-year-old man with 48° of internal malrotation of the femur after nailing underwent derotational osteotomy with gait dynamics and electromyography data collected preoperatively and postoperatively. Hip abduction and internal foot progression angles were significantly deviated from normal preoperatively compared with the contralateral side. At 10 months postoperatively, the hip was abducted and externally rotated throughout the entire gait cycle. His Trendelenburg gait had resolved, and he reported no residual functional concerns. Before corrective osteotomy, walking velocity was significantly slower with shorter stride lengths.
CONCLUSION: Significant internal malrotation of the femur impairs hip abduction and foot progression angles as well as gluteus medius activation during ambulation. Derotational osteotomy considerably corrected these values.
Author List
Olson BJ, Lenhart R, Schmeling GJ, Fritz JMAuthors
Rachel L. Lenhart MD Assistant Professor in the Orthopaedic Surgery department at Medical College of WisconsinGregory J. Schmeling MD Vice Chair, Professor in the Orthopaedic Surgery department at Medical College of Wisconsin
MESH terms used to index this publication - Major topics in bold
AdolescentBone Malalignment
Electromyography
Femur
Fracture Fixation, Intramedullary
Gait
Humans
Imaging, Three-Dimensional
Lower Extremity
Male
Osteotomy
Rotation
Walking
