Fracture morphology of AO/OTA 31-A trochanteric fractures: A 3D CT study with an emphasis on coronal fragments

Jae Woo Cho, William T. Kent, Yong Cheol Yoon, Youngwoo Kim, Hyungon Kim, Ashutosh Jha, Senthil Kumar Durai, Jong-Keon Oh

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Aims This study was designed to assess the incidence and morphology of coronal plane fragments in AO/OTA 31-A trochanteric fractures. Patients and methods 156 cases of AO/OTA 31-A trochanteric fractures were retrospectively evaluated. Lateral radiographs were analyzed for the presence of coronal plane fragments followed by analysis of 3D CT reconstructions in these fractures. The incidence of coronal fragments identified on the lateral radiograph and 3D CT reconstructions were both calculated. Coronal fragment morphology was described based upon the origin and exit points of fracture lines and the number of fragments. Results and conclusion On plain radiographs, a coronal plane fracture was identified in 59 cases, an incidence of 37.8% (59/156). In comparison, 3D CT reconstructions identified coronal plane fractures in 138 cases for an incidence of 88.4% (138/156). 3D CT reconstructions identified coronal fracture fragments in 81.9% (50/61) of AO/OTA 31-A1 cases, 94.5% (69/73) of 31-A2 cases, and 86.3% (19/22) of 31-A3 cases. Incidence of coronal fractures identified on plain radiographs of 3 AO/OTA 31-A1,A2,A3 groups was lower when compared to the incidence of coronal fractures identified on 3D CT. Of the 138 cases that had coronal plane fracture, 82 cases (59.4%) had a single coronal fragment (GT fragment 35 cases, GLT fragment 19 cases, GLPC fragment 28 cases). The remaining 56 cases (40.5%) had two coronal fragments. There is a high incidence of coronal fragments in intertrochanteric femur fractures when analyzed with 3D CT reconstructions. Our study suggests that these coronal fragments are difficult to identify on plain radiographs. Knowledge of the incidence and morphology of coronal fragments helps to avoid potential intraoperative pitfalls.

Original languageEnglish
Pages (from-to)277-284
Number of pages8
JournalInjury
Volume48
Issue number2
DOIs
Publication statusPublished - 2017 Feb 1

Fingerprint

Hip Fractures
Incidence
varespladib methyl
Femur

Keywords

  • 3D CT
  • Coronal fragment
  • Fracture morphology
  • Intertrochanteric fracture

ASJC Scopus subject areas

  • Emergency Medicine
  • Orthopedics and Sports Medicine

Cite this

Fracture morphology of AO/OTA 31-A trochanteric fractures : A 3D CT study with an emphasis on coronal fragments. / Cho, Jae Woo; Kent, William T.; Yoon, Yong Cheol; Kim, Youngwoo; Kim, Hyungon; Jha, Ashutosh; Durai, Senthil Kumar; Oh, Jong-Keon.

In: Injury, Vol. 48, No. 2, 01.02.2017, p. 277-284.

Research output: Contribution to journalArticle

Cho, Jae Woo ; Kent, William T. ; Yoon, Yong Cheol ; Kim, Youngwoo ; Kim, Hyungon ; Jha, Ashutosh ; Durai, Senthil Kumar ; Oh, Jong-Keon. / Fracture morphology of AO/OTA 31-A trochanteric fractures : A 3D CT study with an emphasis on coronal fragments. In: Injury. 2017 ; Vol. 48, No. 2. pp. 277-284.
@article{ae6961c156e64ffea2fc91cb113bf9a3,
title = "Fracture morphology of AO/OTA 31-A trochanteric fractures: A 3D CT study with an emphasis on coronal fragments",
abstract = "Aims This study was designed to assess the incidence and morphology of coronal plane fragments in AO/OTA 31-A trochanteric fractures. Patients and methods 156 cases of AO/OTA 31-A trochanteric fractures were retrospectively evaluated. Lateral radiographs were analyzed for the presence of coronal plane fragments followed by analysis of 3D CT reconstructions in these fractures. The incidence of coronal fragments identified on the lateral radiograph and 3D CT reconstructions were both calculated. Coronal fragment morphology was described based upon the origin and exit points of fracture lines and the number of fragments. Results and conclusion On plain radiographs, a coronal plane fracture was identified in 59 cases, an incidence of 37.8{\%} (59/156). In comparison, 3D CT reconstructions identified coronal plane fractures in 138 cases for an incidence of 88.4{\%} (138/156). 3D CT reconstructions identified coronal fracture fragments in 81.9{\%} (50/61) of AO/OTA 31-A1 cases, 94.5{\%} (69/73) of 31-A2 cases, and 86.3{\%} (19/22) of 31-A3 cases. Incidence of coronal fractures identified on plain radiographs of 3 AO/OTA 31-A1,A2,A3 groups was lower when compared to the incidence of coronal fractures identified on 3D CT. Of the 138 cases that had coronal plane fracture, 82 cases (59.4{\%}) had a single coronal fragment (GT fragment 35 cases, GLT fragment 19 cases, GLPC fragment 28 cases). The remaining 56 cases (40.5{\%}) had two coronal fragments. There is a high incidence of coronal fragments in intertrochanteric femur fractures when analyzed with 3D CT reconstructions. Our study suggests that these coronal fragments are difficult to identify on plain radiographs. Knowledge of the incidence and morphology of coronal fragments helps to avoid potential intraoperative pitfalls.",
keywords = "3D CT, Coronal fragment, Fracture morphology, Intertrochanteric fracture",
author = "Cho, {Jae Woo} and Kent, {William T.} and Yoon, {Yong Cheol} and Youngwoo Kim and Hyungon Kim and Ashutosh Jha and Durai, {Senthil Kumar} and Jong-Keon Oh",
year = "2017",
month = "2",
day = "1",
doi = "10.1016/j.injury.2016.12.015",
language = "English",
volume = "48",
pages = "277--284",
journal = "Injury",
issn = "0020-1383",
publisher = "Elsevier Limited",
number = "2",

}

TY - JOUR

T1 - Fracture morphology of AO/OTA 31-A trochanteric fractures

T2 - A 3D CT study with an emphasis on coronal fragments

AU - Cho, Jae Woo

AU - Kent, William T.

AU - Yoon, Yong Cheol

AU - Kim, Youngwoo

AU - Kim, Hyungon

AU - Jha, Ashutosh

AU - Durai, Senthil Kumar

AU - Oh, Jong-Keon

PY - 2017/2/1

Y1 - 2017/2/1

N2 - Aims This study was designed to assess the incidence and morphology of coronal plane fragments in AO/OTA 31-A trochanteric fractures. Patients and methods 156 cases of AO/OTA 31-A trochanteric fractures were retrospectively evaluated. Lateral radiographs were analyzed for the presence of coronal plane fragments followed by analysis of 3D CT reconstructions in these fractures. The incidence of coronal fragments identified on the lateral radiograph and 3D CT reconstructions were both calculated. Coronal fragment morphology was described based upon the origin and exit points of fracture lines and the number of fragments. Results and conclusion On plain radiographs, a coronal plane fracture was identified in 59 cases, an incidence of 37.8% (59/156). In comparison, 3D CT reconstructions identified coronal plane fractures in 138 cases for an incidence of 88.4% (138/156). 3D CT reconstructions identified coronal fracture fragments in 81.9% (50/61) of AO/OTA 31-A1 cases, 94.5% (69/73) of 31-A2 cases, and 86.3% (19/22) of 31-A3 cases. Incidence of coronal fractures identified on plain radiographs of 3 AO/OTA 31-A1,A2,A3 groups was lower when compared to the incidence of coronal fractures identified on 3D CT. Of the 138 cases that had coronal plane fracture, 82 cases (59.4%) had a single coronal fragment (GT fragment 35 cases, GLT fragment 19 cases, GLPC fragment 28 cases). The remaining 56 cases (40.5%) had two coronal fragments. There is a high incidence of coronal fragments in intertrochanteric femur fractures when analyzed with 3D CT reconstructions. Our study suggests that these coronal fragments are difficult to identify on plain radiographs. Knowledge of the incidence and morphology of coronal fragments helps to avoid potential intraoperative pitfalls.

AB - Aims This study was designed to assess the incidence and morphology of coronal plane fragments in AO/OTA 31-A trochanteric fractures. Patients and methods 156 cases of AO/OTA 31-A trochanteric fractures were retrospectively evaluated. Lateral radiographs were analyzed for the presence of coronal plane fragments followed by analysis of 3D CT reconstructions in these fractures. The incidence of coronal fragments identified on the lateral radiograph and 3D CT reconstructions were both calculated. Coronal fragment morphology was described based upon the origin and exit points of fracture lines and the number of fragments. Results and conclusion On plain radiographs, a coronal plane fracture was identified in 59 cases, an incidence of 37.8% (59/156). In comparison, 3D CT reconstructions identified coronal plane fractures in 138 cases for an incidence of 88.4% (138/156). 3D CT reconstructions identified coronal fracture fragments in 81.9% (50/61) of AO/OTA 31-A1 cases, 94.5% (69/73) of 31-A2 cases, and 86.3% (19/22) of 31-A3 cases. Incidence of coronal fractures identified on plain radiographs of 3 AO/OTA 31-A1,A2,A3 groups was lower when compared to the incidence of coronal fractures identified on 3D CT. Of the 138 cases that had coronal plane fracture, 82 cases (59.4%) had a single coronal fragment (GT fragment 35 cases, GLT fragment 19 cases, GLPC fragment 28 cases). The remaining 56 cases (40.5%) had two coronal fragments. There is a high incidence of coronal fragments in intertrochanteric femur fractures when analyzed with 3D CT reconstructions. Our study suggests that these coronal fragments are difficult to identify on plain radiographs. Knowledge of the incidence and morphology of coronal fragments helps to avoid potential intraoperative pitfalls.

KW - 3D CT

KW - Coronal fragment

KW - Fracture morphology

KW - Intertrochanteric fracture

UR - http://www.scopus.com/inward/record.url?scp=85009401643&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85009401643&partnerID=8YFLogxK

U2 - 10.1016/j.injury.2016.12.015

DO - 10.1016/j.injury.2016.12.015

M3 - Article

C2 - 28040260

AN - SCOPUS:85009401643

VL - 48

SP - 277

EP - 284

JO - Injury

JF - Injury

SN - 0020-1383

IS - 2

ER -