CT based measurement of anatomical dimensions of femur and its relevance in nail designs for proximal femoral fractures

Mahesh Kulkarni, Monappa Naik A, Chethan B. Shetty, Samir M. Paruthikunnan, Sharath K. Rao

Research output: Contribution to journalArticle

Abstract

Introduction: The purpose of this study was to obtain computed tomography (CT) based measurements of femoral dimensions in adults, to identify its relevance with intramedullary nails used in the management of proximal femur fractures and to suggest a best fitting implant dimensions to our population. To best of our knowledge our study would be first to compile different CT based dimension in single study. Methods: In our retrospective study of 50 femurs, CT based femoral dimensions measured in standardized cuts and compared with previous studies and commonly available proximal femur intramedullary devices. Results: 68.4 was the mean age in our study, neck shaft angle (NSA) was 127.2±5.20, anteversion 11.2±7.40, endosteal isthmus diameter was 11.9 ± 1.7 mm, anterior radius of curvature (ROC) was 116.8 ± 20 mm, horizontal femoral offset 37.5 ± 4.6 mm, medio-lateral angle 7.8±1.60, with good inter and intra observer correlation. Femoral length and neck width was positively correlated to head diameter, horizontal femoral offset with medio-lateral (ML) angle. One of the 50 femur studied had the parameters in the range of available implant and could match appropriately. Conclusion: CT based dimensions in our population is different from other population. Based on this study, a design modification of nails used in present day management of proximal femur fractures has been recommended.

Original languageEnglish
Pages (from-to)63-69
Number of pages7
JournalJournal of Orthopaedics
Volume20
DOIs
Publication statusPublished - 01-07-2020

Fingerprint

Femoral Fractures
Nails
Femur
Thigh
Tomography
Population
Femur Neck
Neck
Retrospective Studies
Head
Equipment and Supplies

All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine

Cite this

@article{321a1eba02d649dd96e4b3ac0ce3b255,
title = "CT based measurement of anatomical dimensions of femur and its relevance in nail designs for proximal femoral fractures",
abstract = "Introduction: The purpose of this study was to obtain computed tomography (CT) based measurements of femoral dimensions in adults, to identify its relevance with intramedullary nails used in the management of proximal femur fractures and to suggest a best fitting implant dimensions to our population. To best of our knowledge our study would be first to compile different CT based dimension in single study. Methods: In our retrospective study of 50 femurs, CT based femoral dimensions measured in standardized cuts and compared with previous studies and commonly available proximal femur intramedullary devices. Results: 68.4 was the mean age in our study, neck shaft angle (NSA) was 127.2±5.20, anteversion 11.2±7.40, endosteal isthmus diameter was 11.9 ± 1.7 mm, anterior radius of curvature (ROC) was 116.8 ± 20 mm, horizontal femoral offset 37.5 ± 4.6 mm, medio-lateral angle 7.8±1.60, with good inter and intra observer correlation. Femoral length and neck width was positively correlated to head diameter, horizontal femoral offset with medio-lateral (ML) angle. One of the 50 femur studied had the parameters in the range of available implant and could match appropriately. Conclusion: CT based dimensions in our population is different from other population. Based on this study, a design modification of nails used in present day management of proximal femur fractures has been recommended.",
author = "Mahesh Kulkarni and {Naik A}, Monappa and Shetty, {Chethan B.} and Paruthikunnan, {Samir M.} and Rao, {Sharath K.}",
year = "2020",
month = "7",
day = "1",
doi = "10.1016/j.jor.2019.12.002",
language = "English",
volume = "20",
pages = "63--69",
journal = "Journal of Orthopaedics",
issn = "0972-978X",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - CT based measurement of anatomical dimensions of femur and its relevance in nail designs for proximal femoral fractures

AU - Kulkarni, Mahesh

AU - Naik A, Monappa

AU - Shetty, Chethan B.

AU - Paruthikunnan, Samir M.

AU - Rao, Sharath K.

PY - 2020/7/1

Y1 - 2020/7/1

N2 - Introduction: The purpose of this study was to obtain computed tomography (CT) based measurements of femoral dimensions in adults, to identify its relevance with intramedullary nails used in the management of proximal femur fractures and to suggest a best fitting implant dimensions to our population. To best of our knowledge our study would be first to compile different CT based dimension in single study. Methods: In our retrospective study of 50 femurs, CT based femoral dimensions measured in standardized cuts and compared with previous studies and commonly available proximal femur intramedullary devices. Results: 68.4 was the mean age in our study, neck shaft angle (NSA) was 127.2±5.20, anteversion 11.2±7.40, endosteal isthmus diameter was 11.9 ± 1.7 mm, anterior radius of curvature (ROC) was 116.8 ± 20 mm, horizontal femoral offset 37.5 ± 4.6 mm, medio-lateral angle 7.8±1.60, with good inter and intra observer correlation. Femoral length and neck width was positively correlated to head diameter, horizontal femoral offset with medio-lateral (ML) angle. One of the 50 femur studied had the parameters in the range of available implant and could match appropriately. Conclusion: CT based dimensions in our population is different from other population. Based on this study, a design modification of nails used in present day management of proximal femur fractures has been recommended.

AB - Introduction: The purpose of this study was to obtain computed tomography (CT) based measurements of femoral dimensions in adults, to identify its relevance with intramedullary nails used in the management of proximal femur fractures and to suggest a best fitting implant dimensions to our population. To best of our knowledge our study would be first to compile different CT based dimension in single study. Methods: In our retrospective study of 50 femurs, CT based femoral dimensions measured in standardized cuts and compared with previous studies and commonly available proximal femur intramedullary devices. Results: 68.4 was the mean age in our study, neck shaft angle (NSA) was 127.2±5.20, anteversion 11.2±7.40, endosteal isthmus diameter was 11.9 ± 1.7 mm, anterior radius of curvature (ROC) was 116.8 ± 20 mm, horizontal femoral offset 37.5 ± 4.6 mm, medio-lateral angle 7.8±1.60, with good inter and intra observer correlation. Femoral length and neck width was positively correlated to head diameter, horizontal femoral offset with medio-lateral (ML) angle. One of the 50 femur studied had the parameters in the range of available implant and could match appropriately. Conclusion: CT based dimensions in our population is different from other population. Based on this study, a design modification of nails used in present day management of proximal femur fractures has been recommended.

UR - http://www.scopus.com/inward/record.url?scp=85078398203&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85078398203&partnerID=8YFLogxK

U2 - 10.1016/j.jor.2019.12.002

DO - 10.1016/j.jor.2019.12.002

M3 - Article

AN - SCOPUS:85078398203

VL - 20

SP - 63

EP - 69

JO - Journal of Orthopaedics

JF - Journal of Orthopaedics

SN - 0972-978X

ER -