Radiographic prevalence of CAM-type femoroacetabular impingement after open reduction and internal fixation of femoral neck fractures

FAITH Investigators; G. Mathew; M. Kowalczuk; B. Hetaimish; A. Bedi; M. J. Philippon; M. Bhandari; N. Simunovic; S. Crouch; Sarah A Anderson; O. R. Ayeni

doi:10.1007/s00167-014-2835-6

Radiographic prevalence of CAM-type femoroacetabular impingement after open reduction and internal fixation of femoral neck fractures

FAITH Investigators, G. Mathew, M. Kowalczuk, B. Hetaimish, A. Bedi, M. J. Philippon, M. Bhandari, N. Simunovic, S. Crouch, Sarah A Anderson, O. R. Ayeni

Orthopaedic Surgery

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Purpose: The purpose of this study was to estimate the radiographic prevalence of CAM-type femoroacetabular impingement (FAI) in elderly patients (≥50 years) who have undergone internal fixation for femoral neck fracture. Methods: A total of 187 frog-leg lateral radiographs of elderly patients who underwent internal fixation for a femoral neck fracture were reviewed by two independent reviewers. The alpha angle, beta angle, and femoral head-neck offset ratio were calculated. The presence of two abnormal radiographic parameters was deemed to be diagnostic of radiographic CAM-type impingement. Results: Radiographic CAM-type FAI was identified in 157 out of 187 (84 %) patients who underwent internal fixation for fractures of the femoral neck. Moderate-to-good inter-observer reliability was achieved in the measurement of radiographic parameters. With reference to fracture subtypes and prevalence of radiographic features of CAM-type morphology, 97 (72 %) out of 134 patients were positive for CAM in Garden subtypes I and II, whereas 49 (85.9 %) out of 57 patients had radiographic CAM in Garden III and IV subtypes. Conclusion: There was a high prevalence of CAM-type FAI in patients that underwent surgical fixation of femoral neck fractures. This is significantly higher than the reported prevalence in non-fracture patient populations. The high prevalence of CAM morphology could be related to several factors, including age, fracture morphology, quality of reduction, type of fixation, and fracture healing. Level of evidence: IV.

Original language	English (US)
Pages (from-to)	793-800
Number of pages	8
Journal	Knee Surgery, Sports Traumatology, Arthroscopy
Volume	22
Issue number	4
DOIs	https://doi.org/10.1007/s00167-014-2835-6
State	Published - 2014

Bibliographical note

Funding Information:
Research grants were received from the following: Canadian Institutes of Health Research (CIHR) (PI: Mohit Bhandari); National Institutes of Health (NIH) (PI: Marc Swiontkowski); Stichting NutsOhra (PI: Martin J. Heet-veld), The Netherlands Organisation for Health Research and Development (PI: Esther M.M. Van Lieshout); Physicians’ Services Incorporated (PI: Mohit Bhandari). Dr. Bhandari was also funded, in part, by a Canada Research Chair in Musculoskeletal Trauma which is unrelated to the present study (McMaster University, Hamilton, ON, Canada). The funding sources had no role in design or conduct of the study; the collection, management, analysis, or interpretation of the data; or the preparation, review, or approval of the manuscript. Dr. Mohit Bhandari had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.

Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.

Keywords

Femoral neck fractures
Femoroacetabular impingement
Internal fixation
Open reduction

Publisher link

10.1007/s00167-014-2835-6

Find It

Find It at U of M Libraries

Cite this

FAITH Investigators, Mathew, G., Kowalczuk, M., Hetaimish, B., Bedi, A., Philippon, M. J., Bhandari, M., Simunovic, N., Crouch, S., Anderson, S. A., & Ayeni, O. R. (2014). Radiographic prevalence of CAM-type femoroacetabular impingement after open reduction and internal fixation of femoral neck fractures. Knee Surgery, Sports Traumatology, Arthroscopy, 22(4), 793-800. https://doi.org/10.1007/s00167-014-2835-6

FAITH Investigators, Mathew, G, Kowalczuk, M, Hetaimish, B, Bedi, A, Philippon, MJ, Bhandari, M, Simunovic, N, Crouch, S, Anderson, SA & Ayeni, OR 2014, 'Radiographic prevalence of CAM-type femoroacetabular impingement after open reduction and internal fixation of femoral neck fractures', Knee Surgery, Sports Traumatology, Arthroscopy, vol. 22, no. 4, pp. 793-800. https://doi.org/10.1007/s00167-014-2835-6

@article{d35e98583afe4b09b97bb2c7e71b0e10,

title = "Radiographic prevalence of CAM-type femoroacetabular impingement after open reduction and internal fixation of femoral neck fractures",

abstract = "Purpose: The purpose of this study was to estimate the radiographic prevalence of CAM-type femoroacetabular impingement (FAI) in elderly patients (≥50 years) who have undergone internal fixation for femoral neck fracture. Methods: A total of 187 frog-leg lateral radiographs of elderly patients who underwent internal fixation for a femoral neck fracture were reviewed by two independent reviewers. The alpha angle, beta angle, and femoral head-neck offset ratio were calculated. The presence of two abnormal radiographic parameters was deemed to be diagnostic of radiographic CAM-type impingement. Results: Radiographic CAM-type FAI was identified in 157 out of 187 (84 %) patients who underwent internal fixation for fractures of the femoral neck. Moderate-to-good inter-observer reliability was achieved in the measurement of radiographic parameters. With reference to fracture subtypes and prevalence of radiographic features of CAM-type morphology, 97 (72 %) out of 134 patients were positive for CAM in Garden subtypes I and II, whereas 49 (85.9 %) out of 57 patients had radiographic CAM in Garden III and IV subtypes. Conclusion: There was a high prevalence of CAM-type FAI in patients that underwent surgical fixation of femoral neck fractures. This is significantly higher than the reported prevalence in non-fracture patient populations. The high prevalence of CAM morphology could be related to several factors, including age, fracture morphology, quality of reduction, type of fixation, and fracture healing. Level of evidence: IV.",

keywords = "Femoral neck fractures, Femoroacetabular impingement, Internal fixation, Open reduction",

author = "{FAITH Investigators} and G. Mathew and M. Kowalczuk and B. Hetaimish and A. Bedi and Philippon, {M. J.} and M. Bhandari and N. Simunovic and S. Crouch and Anderson, {Sarah A} and Ayeni, {O. R.}",

note = "Funding Information: Research grants were received from the following: Canadian Institutes of Health Research (CIHR) (PI: Mohit Bhandari); National Institutes of Health (NIH) (PI: Marc Swiontkowski); Stichting NutsOhra (PI: Martin J. Heet-veld), The Netherlands Organisation for Health Research and Development (PI: Esther M.M. Van Lieshout); Physicians{\textquoteright} Services Incorporated (PI: Mohit Bhandari). Dr. Bhandari was also funded, in part, by a Canada Research Chair in Musculoskeletal Trauma which is unrelated to the present study (McMaster University, Hamilton, ON, Canada). The funding sources had no role in design or conduct of the study; the collection, management, analysis, or interpretation of the data; or the preparation, review, or approval of the manuscript. Dr. Mohit Bhandari had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",

year = "2014",

doi = "10.1007/s00167-014-2835-6",

language = "English (US)",

volume = "22",

pages = "793--800",

journal = "Knee Surgery, Sports Traumatology, Arthroscopy",

issn = "0942-2056",

publisher = "Springer Verlag",

number = "4",

}

TY - JOUR

T1 - Radiographic prevalence of CAM-type femoroacetabular impingement after open reduction and internal fixation of femoral neck fractures

AU - FAITH Investigators

AU - Mathew, G.

AU - Kowalczuk, M.

AU - Hetaimish, B.

AU - Bedi, A.

AU - Philippon, M. J.

AU - Bhandari, M.

AU - Simunovic, N.

AU - Crouch, S.

AU - Anderson, Sarah A

AU - Ayeni, O. R.

N1 - Funding Information: Research grants were received from the following: Canadian Institutes of Health Research (CIHR) (PI: Mohit Bhandari); National Institutes of Health (NIH) (PI: Marc Swiontkowski); Stichting NutsOhra (PI: Martin J. Heet-veld), The Netherlands Organisation for Health Research and Development (PI: Esther M.M. Van Lieshout); Physicians’ Services Incorporated (PI: Mohit Bhandari). Dr. Bhandari was also funded, in part, by a Canada Research Chair in Musculoskeletal Trauma which is unrelated to the present study (McMaster University, Hamilton, ON, Canada). The funding sources had no role in design or conduct of the study; the collection, management, analysis, or interpretation of the data; or the preparation, review, or approval of the manuscript. Dr. Mohit Bhandari had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 2014

Y1 - 2014

N2 - Purpose: The purpose of this study was to estimate the radiographic prevalence of CAM-type femoroacetabular impingement (FAI) in elderly patients (≥50 years) who have undergone internal fixation for femoral neck fracture. Methods: A total of 187 frog-leg lateral radiographs of elderly patients who underwent internal fixation for a femoral neck fracture were reviewed by two independent reviewers. The alpha angle, beta angle, and femoral head-neck offset ratio were calculated. The presence of two abnormal radiographic parameters was deemed to be diagnostic of radiographic CAM-type impingement. Results: Radiographic CAM-type FAI was identified in 157 out of 187 (84 %) patients who underwent internal fixation for fractures of the femoral neck. Moderate-to-good inter-observer reliability was achieved in the measurement of radiographic parameters. With reference to fracture subtypes and prevalence of radiographic features of CAM-type morphology, 97 (72 %) out of 134 patients were positive for CAM in Garden subtypes I and II, whereas 49 (85.9 %) out of 57 patients had radiographic CAM in Garden III and IV subtypes. Conclusion: There was a high prevalence of CAM-type FAI in patients that underwent surgical fixation of femoral neck fractures. This is significantly higher than the reported prevalence in non-fracture patient populations. The high prevalence of CAM morphology could be related to several factors, including age, fracture morphology, quality of reduction, type of fixation, and fracture healing. Level of evidence: IV.

AB - Purpose: The purpose of this study was to estimate the radiographic prevalence of CAM-type femoroacetabular impingement (FAI) in elderly patients (≥50 years) who have undergone internal fixation for femoral neck fracture. Methods: A total of 187 frog-leg lateral radiographs of elderly patients who underwent internal fixation for a femoral neck fracture were reviewed by two independent reviewers. The alpha angle, beta angle, and femoral head-neck offset ratio were calculated. The presence of two abnormal radiographic parameters was deemed to be diagnostic of radiographic CAM-type impingement. Results: Radiographic CAM-type FAI was identified in 157 out of 187 (84 %) patients who underwent internal fixation for fractures of the femoral neck. Moderate-to-good inter-observer reliability was achieved in the measurement of radiographic parameters. With reference to fracture subtypes and prevalence of radiographic features of CAM-type morphology, 97 (72 %) out of 134 patients were positive for CAM in Garden subtypes I and II, whereas 49 (85.9 %) out of 57 patients had radiographic CAM in Garden III and IV subtypes. Conclusion: There was a high prevalence of CAM-type FAI in patients that underwent surgical fixation of femoral neck fractures. This is significantly higher than the reported prevalence in non-fracture patient populations. The high prevalence of CAM morphology could be related to several factors, including age, fracture morphology, quality of reduction, type of fixation, and fracture healing. Level of evidence: IV.

KW - Femoral neck fractures

KW - Femoroacetabular impingement

KW - Internal fixation

KW - Open reduction

UR - http://www.scopus.com/inward/record.url?scp=84896492815&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84896492815&partnerID=8YFLogxK

U2 - 10.1007/s00167-014-2835-6

DO - 10.1007/s00167-014-2835-6

M3 - Article

C2 - 24488220

AN - SCOPUS:84896492815

SN - 0942-2056

VL - 22

SP - 793

EP - 800

JO - Knee Surgery, Sports Traumatology, Arthroscopy

JF - Knee Surgery, Sports Traumatology, Arthroscopy

IS - 4

ER -

Radiographic prevalence of CAM-type femoroacetabular impingement after open reduction and internal fixation of femoral neck fractures

Abstract

Bibliographical note

Keywords

Publisher link

Find It

Other files and links

Fingerprint

Cite this