Quantitative assessment of classic anteroinferior bony Bankart lesions by radiography and computed tomography

Eiji Itoi, Seok Beom Lee, Kimberly K. Amrami, Doris E. Wenger, Kai Nan An

Research output: Contribution to journalArticle

119 Citations (Scopus)

Abstract

Background: An anteroinferior osseous defect of the glenoid rim is sometimes encountered in patients with recurrent anterior dislocations of the shoulder. A defect of more than 21% of the glenoid length is reported to cause instability after Bankart repair. Hypothesis: We can estimate the critical size of glenoid defects by using radiography or computed tomography. Study Design: A controlled laboratory study. Methods: Osseous defects of 0%, 9%, 21%, 34%, and 46% of the glenoid length were created stepwise in 12 cadaveric scapulae, and plain radiographs simulating the axillary and West Point views and computed tomographic images were obtained. The maximum width of the remnant glenoid was measured under each condition and expressed as a percentage of the width of the intact glenoid. Results: A 21% defect appeared to be 18.6% of the intact glenoid on the West Point view. With computed tomography, a 21% defect resulted in loss of 50% of the width on a single slice across the lower one-fourth of the glenoid. Conclusions: We can estimate the size of a glenoid defect by using the West Point radiographic view or computed tomogram. Clinical Relevance: These images gave decisive information as to whether an osseous glenoid defect required bone grafting to achieve stability after Bankart repair.

Original languageEnglish (US)
Pages (from-to)112-118
Number of pages7
JournalAmerican Journal of Sports Medicine
Volume31
Issue number1
StatePublished - Jan 2003

Fingerprint

Radiography
Tomography
Shoulder Dislocation
Scapula
Bone Transplantation
Bankart Lesions

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Quantitative assessment of classic anteroinferior bony Bankart lesions by radiography and computed tomography. / Itoi, Eiji; Lee, Seok Beom; Amrami, Kimberly K.; Wenger, Doris E.; An, Kai Nan.

In: American Journal of Sports Medicine, Vol. 31, No. 1, 01.2003, p. 112-118.

Research output: Contribution to journalArticle

Itoi, Eiji ; Lee, Seok Beom ; Amrami, Kimberly K. ; Wenger, Doris E. ; An, Kai Nan. / Quantitative assessment of classic anteroinferior bony Bankart lesions by radiography and computed tomography. In: American Journal of Sports Medicine. 2003 ; Vol. 31, No. 1. pp. 112-118.
@article{795e066c1c23460a92ef833838dcf99d,
title = "Quantitative assessment of classic anteroinferior bony Bankart lesions by radiography and computed tomography",
abstract = "Background: An anteroinferior osseous defect of the glenoid rim is sometimes encountered in patients with recurrent anterior dislocations of the shoulder. A defect of more than 21{\%} of the glenoid length is reported to cause instability after Bankart repair. Hypothesis: We can estimate the critical size of glenoid defects by using radiography or computed tomography. Study Design: A controlled laboratory study. Methods: Osseous defects of 0{\%}, 9{\%}, 21{\%}, 34{\%}, and 46{\%} of the glenoid length were created stepwise in 12 cadaveric scapulae, and plain radiographs simulating the axillary and West Point views and computed tomographic images were obtained. The maximum width of the remnant glenoid was measured under each condition and expressed as a percentage of the width of the intact glenoid. Results: A 21{\%} defect appeared to be 18.6{\%} of the intact glenoid on the West Point view. With computed tomography, a 21{\%} defect resulted in loss of 50{\%} of the width on a single slice across the lower one-fourth of the glenoid. Conclusions: We can estimate the size of a glenoid defect by using the West Point radiographic view or computed tomogram. Clinical Relevance: These images gave decisive information as to whether an osseous glenoid defect required bone grafting to achieve stability after Bankart repair.",
author = "Eiji Itoi and Lee, {Seok Beom} and Amrami, {Kimberly K.} and Wenger, {Doris E.} and An, {Kai Nan}",
year = "2003",
month = "1",
language = "English (US)",
volume = "31",
pages = "112--118",
journal = "American Journal of Sports Medicine",
issn = "0363-5465",
publisher = "SAGE Publications Inc.",
number = "1",

}

TY - JOUR

T1 - Quantitative assessment of classic anteroinferior bony Bankart lesions by radiography and computed tomography

AU - Itoi, Eiji

AU - Lee, Seok Beom

AU - Amrami, Kimberly K.

AU - Wenger, Doris E.

AU - An, Kai Nan

PY - 2003/1

Y1 - 2003/1

N2 - Background: An anteroinferior osseous defect of the glenoid rim is sometimes encountered in patients with recurrent anterior dislocations of the shoulder. A defect of more than 21% of the glenoid length is reported to cause instability after Bankart repair. Hypothesis: We can estimate the critical size of glenoid defects by using radiography or computed tomography. Study Design: A controlled laboratory study. Methods: Osseous defects of 0%, 9%, 21%, 34%, and 46% of the glenoid length were created stepwise in 12 cadaveric scapulae, and plain radiographs simulating the axillary and West Point views and computed tomographic images were obtained. The maximum width of the remnant glenoid was measured under each condition and expressed as a percentage of the width of the intact glenoid. Results: A 21% defect appeared to be 18.6% of the intact glenoid on the West Point view. With computed tomography, a 21% defect resulted in loss of 50% of the width on a single slice across the lower one-fourth of the glenoid. Conclusions: We can estimate the size of a glenoid defect by using the West Point radiographic view or computed tomogram. Clinical Relevance: These images gave decisive information as to whether an osseous glenoid defect required bone grafting to achieve stability after Bankart repair.

AB - Background: An anteroinferior osseous defect of the glenoid rim is sometimes encountered in patients with recurrent anterior dislocations of the shoulder. A defect of more than 21% of the glenoid length is reported to cause instability after Bankart repair. Hypothesis: We can estimate the critical size of glenoid defects by using radiography or computed tomography. Study Design: A controlled laboratory study. Methods: Osseous defects of 0%, 9%, 21%, 34%, and 46% of the glenoid length were created stepwise in 12 cadaveric scapulae, and plain radiographs simulating the axillary and West Point views and computed tomographic images were obtained. The maximum width of the remnant glenoid was measured under each condition and expressed as a percentage of the width of the intact glenoid. Results: A 21% defect appeared to be 18.6% of the intact glenoid on the West Point view. With computed tomography, a 21% defect resulted in loss of 50% of the width on a single slice across the lower one-fourth of the glenoid. Conclusions: We can estimate the size of a glenoid defect by using the West Point radiographic view or computed tomogram. Clinical Relevance: These images gave decisive information as to whether an osseous glenoid defect required bone grafting to achieve stability after Bankart repair.

UR - http://www.scopus.com/inward/record.url?scp=0037240266&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037240266&partnerID=8YFLogxK

M3 - Article

C2 - 12531767

AN - SCOPUS:0037240266

VL - 31

SP - 112

EP - 118

JO - American Journal of Sports Medicine

JF - American Journal of Sports Medicine

SN - 0363-5465

IS - 1

ER -