Reporting rotator cuff tears on magnetic resonance arthrography using the Snyder's arthroscopic classification

Alberto Aliprandi, Carmelo Messina, Paolo Arrigoni, Michele Bandirali, Giovanni Di Leo, Stefano Longo, Sandro Magnani, Chiara Mattiuz, Filippo Randelli, Silvana Sdao, Francesco Sardanelli, Luca Maria Sconfienza, Pietro Randelli

Research output: Contribution to journalArticle

Abstract

AIM: To determine diagnostic performance of magnetic resonance arthrography (MRA) in evaluating rotator cuff tears (RCTs) using Snyder's classification for reporting.

METHODS: One hundred and twenty-six patients (64 males, 62 females; median age 55 years) underwent shoulder MRA and arthroscopy, which represented our reference standard. Surgical arthroscopic reports were reviewed and the reported Snyder's classification was recorded. MRA examinations were evaluated by two independent radiologists (14 and 5 years' experience) using Snyder's classification system, blinded to arthroscopy. Agreement between arthroscopy and MRA on partial- and full-thickness tears was calculated, first regardless of their extent. Then, analysis took into account also the extent of the tear. Interobserver agreement was also calculated the quadratically-weighted Cohen kappa statistics.

RESULTS: On arthroscopy, 71/126 patients (56%) had a full-thickness RCT. The remaining 55/126 patients (44%) had a partial-thickness RCT. Regardless of tear extent, out of 71 patients with arthroscopically-confirmed full-thickness RCTs, 66 (93%) were correctly scored by both readers. All 55 patients with arthroscopic diagnosis of partial-thickness RCT were correctly assigned as having a partial-thickness RCT at MRA by both readers. Interobserver reproducibility analysis showed total agreement between the two readers in distinguishing partial-thickness from full-thickness RCTs, regardless of tear extent (k = 1.000). With regard to tear extent, in patients in whom a complete tear was correctly diagnosed, correct tear extent was detected in 61/66 cases (92%); in the remaining 5/66 cases (8%), tear extent was underestimated. Agreement was k = 0.955. Interobserver agreement was total (k = 1.000).

CONCLUSION: MRA shows high diagnostic accuracy and reproducibility in evaluating RCTs using the Snyder's classification for reporting. Snyder's classification may be adopted for routine reporting of MRA.

Original languageEnglish
Pages (from-to)126-133
Number of pages8
JournalWorld journal of radiology
Volume9
Issue number3
DOIs
Publication statusPublished - Mar 28 2017

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Arthrography
Tears
Magnetic Resonance Spectroscopy
Arthroscopy
Rotator Cuff Injuries

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Reporting rotator cuff tears on magnetic resonance arthrography using the Snyder's arthroscopic classification. / Aliprandi, Alberto; Messina, Carmelo; Arrigoni, Paolo; Bandirali, Michele; Di Leo, Giovanni; Longo, Stefano; Magnani, Sandro; Mattiuz, Chiara; Randelli, Filippo; Sdao, Silvana; Sardanelli, Francesco; Sconfienza, Luca Maria; Randelli, Pietro.

In: World journal of radiology, Vol. 9, No. 3, 28.03.2017, p. 126-133.

Research output: Contribution to journalArticle

Aliprandi, A, Messina, C, Arrigoni, P, Bandirali, M, Di Leo, G, Longo, S, Magnani, S, Mattiuz, C, Randelli, F, Sdao, S, Sardanelli, F, Sconfienza, LM & Randelli, P 2017, 'Reporting rotator cuff tears on magnetic resonance arthrography using the Snyder's arthroscopic classification', World journal of radiology, vol. 9, no. 3, pp. 126-133. https://doi.org/10.4329/wjr.v9.i3.126
Aliprandi, Alberto ; Messina, Carmelo ; Arrigoni, Paolo ; Bandirali, Michele ; Di Leo, Giovanni ; Longo, Stefano ; Magnani, Sandro ; Mattiuz, Chiara ; Randelli, Filippo ; Sdao, Silvana ; Sardanelli, Francesco ; Sconfienza, Luca Maria ; Randelli, Pietro. / Reporting rotator cuff tears on magnetic resonance arthrography using the Snyder's arthroscopic classification. In: World journal of radiology. 2017 ; Vol. 9, No. 3. pp. 126-133.
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abstract = "AIM: To determine diagnostic performance of magnetic resonance arthrography (MRA) in evaluating rotator cuff tears (RCTs) using Snyder's classification for reporting.METHODS: One hundred and twenty-six patients (64 males, 62 females; median age 55 years) underwent shoulder MRA and arthroscopy, which represented our reference standard. Surgical arthroscopic reports were reviewed and the reported Snyder's classification was recorded. MRA examinations were evaluated by two independent radiologists (14 and 5 years' experience) using Snyder's classification system, blinded to arthroscopy. Agreement between arthroscopy and MRA on partial- and full-thickness tears was calculated, first regardless of their extent. Then, analysis took into account also the extent of the tear. Interobserver agreement was also calculated the quadratically-weighted Cohen kappa statistics.RESULTS: On arthroscopy, 71/126 patients (56{\%}) had a full-thickness RCT. The remaining 55/126 patients (44{\%}) had a partial-thickness RCT. Regardless of tear extent, out of 71 patients with arthroscopically-confirmed full-thickness RCTs, 66 (93{\%}) were correctly scored by both readers. All 55 patients with arthroscopic diagnosis of partial-thickness RCT were correctly assigned as having a partial-thickness RCT at MRA by both readers. Interobserver reproducibility analysis showed total agreement between the two readers in distinguishing partial-thickness from full-thickness RCTs, regardless of tear extent (k = 1.000). With regard to tear extent, in patients in whom a complete tear was correctly diagnosed, correct tear extent was detected in 61/66 cases (92{\%}); in the remaining 5/66 cases (8{\%}), tear extent was underestimated. Agreement was k = 0.955. Interobserver agreement was total (k = 1.000).CONCLUSION: MRA shows high diagnostic accuracy and reproducibility in evaluating RCTs using the Snyder's classification for reporting. Snyder's classification may be adopted for routine reporting of MRA.",
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T1 - Reporting rotator cuff tears on magnetic resonance arthrography using the Snyder's arthroscopic classification

AU - Aliprandi, Alberto

AU - Messina, Carmelo

AU - Arrigoni, Paolo

AU - Bandirali, Michele

AU - Di Leo, Giovanni

AU - Longo, Stefano

AU - Magnani, Sandro

AU - Mattiuz, Chiara

AU - Randelli, Filippo

AU - Sdao, Silvana

AU - Sardanelli, Francesco

AU - Sconfienza, Luca Maria

AU - Randelli, Pietro

PY - 2017/3/28

Y1 - 2017/3/28

N2 - AIM: To determine diagnostic performance of magnetic resonance arthrography (MRA) in evaluating rotator cuff tears (RCTs) using Snyder's classification for reporting.METHODS: One hundred and twenty-six patients (64 males, 62 females; median age 55 years) underwent shoulder MRA and arthroscopy, which represented our reference standard. Surgical arthroscopic reports were reviewed and the reported Snyder's classification was recorded. MRA examinations were evaluated by two independent radiologists (14 and 5 years' experience) using Snyder's classification system, blinded to arthroscopy. Agreement between arthroscopy and MRA on partial- and full-thickness tears was calculated, first regardless of their extent. Then, analysis took into account also the extent of the tear. Interobserver agreement was also calculated the quadratically-weighted Cohen kappa statistics.RESULTS: On arthroscopy, 71/126 patients (56%) had a full-thickness RCT. The remaining 55/126 patients (44%) had a partial-thickness RCT. Regardless of tear extent, out of 71 patients with arthroscopically-confirmed full-thickness RCTs, 66 (93%) were correctly scored by both readers. All 55 patients with arthroscopic diagnosis of partial-thickness RCT were correctly assigned as having a partial-thickness RCT at MRA by both readers. Interobserver reproducibility analysis showed total agreement between the two readers in distinguishing partial-thickness from full-thickness RCTs, regardless of tear extent (k = 1.000). With regard to tear extent, in patients in whom a complete tear was correctly diagnosed, correct tear extent was detected in 61/66 cases (92%); in the remaining 5/66 cases (8%), tear extent was underestimated. Agreement was k = 0.955. Interobserver agreement was total (k = 1.000).CONCLUSION: MRA shows high diagnostic accuracy and reproducibility in evaluating RCTs using the Snyder's classification for reporting. Snyder's classification may be adopted for routine reporting of MRA.

AB - AIM: To determine diagnostic performance of magnetic resonance arthrography (MRA) in evaluating rotator cuff tears (RCTs) using Snyder's classification for reporting.METHODS: One hundred and twenty-six patients (64 males, 62 females; median age 55 years) underwent shoulder MRA and arthroscopy, which represented our reference standard. Surgical arthroscopic reports were reviewed and the reported Snyder's classification was recorded. MRA examinations were evaluated by two independent radiologists (14 and 5 years' experience) using Snyder's classification system, blinded to arthroscopy. Agreement between arthroscopy and MRA on partial- and full-thickness tears was calculated, first regardless of their extent. Then, analysis took into account also the extent of the tear. Interobserver agreement was also calculated the quadratically-weighted Cohen kappa statistics.RESULTS: On arthroscopy, 71/126 patients (56%) had a full-thickness RCT. The remaining 55/126 patients (44%) had a partial-thickness RCT. Regardless of tear extent, out of 71 patients with arthroscopically-confirmed full-thickness RCTs, 66 (93%) were correctly scored by both readers. All 55 patients with arthroscopic diagnosis of partial-thickness RCT were correctly assigned as having a partial-thickness RCT at MRA by both readers. Interobserver reproducibility analysis showed total agreement between the two readers in distinguishing partial-thickness from full-thickness RCTs, regardless of tear extent (k = 1.000). With regard to tear extent, in patients in whom a complete tear was correctly diagnosed, correct tear extent was detected in 61/66 cases (92%); in the remaining 5/66 cases (8%), tear extent was underestimated. Agreement was k = 0.955. Interobserver agreement was total (k = 1.000).CONCLUSION: MRA shows high diagnostic accuracy and reproducibility in evaluating RCTs using the Snyder's classification for reporting. Snyder's classification may be adopted for routine reporting of MRA.

U2 - 10.4329/wjr.v9.i3.126

DO - 10.4329/wjr.v9.i3.126

M3 - Article

C2 - 28396726

VL - 9

SP - 126

EP - 133

JO - World journal of radiology

JF - World journal of radiology

SN - 1949-8470

IS - 3

ER -