Analysis of interobserver reliability for radiographic staging of coxarthrosis and indexes of acetabular dysplasia

A preliminary study

Yoshio Takatori, Kazuya Ito, Muroto Sofue, Yoshio Hirota, Moritoshi Itoman, Tadami Matsumoto, Yoshiki Hamada, Hiroyuki Shindo, Harumoto Yamada, Yuji Yasunaga, Hiroshi Ito, Satoshi Mori, Ichiro Owan, Genji Fujii, Hirotsugu Ohashi, Taro Mawatari, Toshiro Iga, Naonobu Takahira, Tanzo Sugimori, Hajime Sugiyama & 8 others Kunihiko Okano, Tatsuro Karita, Kenichi Ando, Takanari Hamaki, Teruhisa Hirayama, Ken Iwata, Masanori Matsuura, Seiya Jingushi

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Background: We are planning a multicenter survey on coxarthrosis and acetabular dysplasia in Japan. To collect reliable data, we performed a preliminary study to elucidate the observer agreement on assessment items. Methods: We collected radiographs of hip joints in eight patients with various findings of coxarthrosis. Twelve registered orthopedic specialists evaluated them regarding the roentgenographic stage of coxarthrosis and five indexes of acetabular dysplasia (acetabular angle, center-edge angle, acetabular roof obliquity, acetabular head quotient, approximate acetabular quotient). To assess observer agreement, we calculated the value of the kappa statistic for stages and the coefficient of variation for the indexes. The same 12 specialists then assessed the coxarthritis stage on the same radiographs 1 month after the first evaluation based on our own descriptions of the roentgenographic stages. Results: For the first evaluation of the roentgenographic stage, the value of the kappa statistic was 0.448; and for the second evaluation it was 0.600. The results of the coefficient of variation for the indexes of acetabular dysplasia, ranked in ascending order, were as follows: acetabular angle, acetabular head quotient, acetabular roof obliquity, center-edge angle, approximate acetabular quotient. Conclusions: For the upcoming multicenter survey, clear descriptions of the stages of coxarthrosis and selection of appropriate indexes can be helpful for collecting dependable results.

Original languageEnglish
Pages (from-to)14-19
Number of pages6
JournalJournal of Orthopaedic Science
Volume15
Issue number1
DOIs
Publication statusPublished - 01-01-2010

Fingerprint

Hip Osteoarthritis
Head
Hip Joint
Orthopedics
Japan
Surveys and Questionnaires

All Science Journal Classification (ASJC) codes

  • Surgery
  • Orthopedics and Sports Medicine

Cite this

Takatori, Yoshio ; Ito, Kazuya ; Sofue, Muroto ; Hirota, Yoshio ; Itoman, Moritoshi ; Matsumoto, Tadami ; Hamada, Yoshiki ; Shindo, Hiroyuki ; Yamada, Harumoto ; Yasunaga, Yuji ; Ito, Hiroshi ; Mori, Satoshi ; Owan, Ichiro ; Fujii, Genji ; Ohashi, Hirotsugu ; Mawatari, Taro ; Iga, Toshiro ; Takahira, Naonobu ; Sugimori, Tanzo ; Sugiyama, Hajime ; Okano, Kunihiko ; Karita, Tatsuro ; Ando, Kenichi ; Hamaki, Takanari ; Hirayama, Teruhisa ; Iwata, Ken ; Matsuura, Masanori ; Jingushi, Seiya. / Analysis of interobserver reliability for radiographic staging of coxarthrosis and indexes of acetabular dysplasia : A preliminary study. In: Journal of Orthopaedic Science. 2010 ; Vol. 15, No. 1. pp. 14-19.
@article{6f1c2a925fa642c78d27b4cd12187dc0,
title = "Analysis of interobserver reliability for radiographic staging of coxarthrosis and indexes of acetabular dysplasia: A preliminary study",
abstract = "Background: We are planning a multicenter survey on coxarthrosis and acetabular dysplasia in Japan. To collect reliable data, we performed a preliminary study to elucidate the observer agreement on assessment items. Methods: We collected radiographs of hip joints in eight patients with various findings of coxarthrosis. Twelve registered orthopedic specialists evaluated them regarding the roentgenographic stage of coxarthrosis and five indexes of acetabular dysplasia (acetabular angle, center-edge angle, acetabular roof obliquity, acetabular head quotient, approximate acetabular quotient). To assess observer agreement, we calculated the value of the kappa statistic for stages and the coefficient of variation for the indexes. The same 12 specialists then assessed the coxarthritis stage on the same radiographs 1 month after the first evaluation based on our own descriptions of the roentgenographic stages. Results: For the first evaluation of the roentgenographic stage, the value of the kappa statistic was 0.448; and for the second evaluation it was 0.600. The results of the coefficient of variation for the indexes of acetabular dysplasia, ranked in ascending order, were as follows: acetabular angle, acetabular head quotient, acetabular roof obliquity, center-edge angle, approximate acetabular quotient. Conclusions: For the upcoming multicenter survey, clear descriptions of the stages of coxarthrosis and selection of appropriate indexes can be helpful for collecting dependable results.",
author = "Yoshio Takatori and Kazuya Ito and Muroto Sofue and Yoshio Hirota and Moritoshi Itoman and Tadami Matsumoto and Yoshiki Hamada and Hiroyuki Shindo and Harumoto Yamada and Yuji Yasunaga and Hiroshi Ito and Satoshi Mori and Ichiro Owan and Genji Fujii and Hirotsugu Ohashi and Taro Mawatari and Toshiro Iga and Naonobu Takahira and Tanzo Sugimori and Hajime Sugiyama and Kunihiko Okano and Tatsuro Karita and Kenichi Ando and Takanari Hamaki and Teruhisa Hirayama and Ken Iwata and Masanori Matsuura and Seiya Jingushi",
year = "2010",
month = "1",
day = "1",
doi = "10.1007/s00776-009-1412-1",
language = "English",
volume = "15",
pages = "14--19",
journal = "Journal of Orthopaedic Science",
issn = "0949-2658",
publisher = "Springer Japan",
number = "1",

}

Takatori, Y, Ito, K, Sofue, M, Hirota, Y, Itoman, M, Matsumoto, T, Hamada, Y, Shindo, H, Yamada, H, Yasunaga, Y, Ito, H, Mori, S, Owan, I, Fujii, G, Ohashi, H, Mawatari, T, Iga, T, Takahira, N, Sugimori, T, Sugiyama, H, Okano, K, Karita, T, Ando, K, Hamaki, T, Hirayama, T, Iwata, K, Matsuura, M & Jingushi, S 2010, 'Analysis of interobserver reliability for radiographic staging of coxarthrosis and indexes of acetabular dysplasia: A preliminary study', Journal of Orthopaedic Science, vol. 15, no. 1, pp. 14-19. https://doi.org/10.1007/s00776-009-1412-1

Analysis of interobserver reliability for radiographic staging of coxarthrosis and indexes of acetabular dysplasia : A preliminary study. / Takatori, Yoshio; Ito, Kazuya; Sofue, Muroto; Hirota, Yoshio; Itoman, Moritoshi; Matsumoto, Tadami; Hamada, Yoshiki; Shindo, Hiroyuki; Yamada, Harumoto; Yasunaga, Yuji; Ito, Hiroshi; Mori, Satoshi; Owan, Ichiro; Fujii, Genji; Ohashi, Hirotsugu; Mawatari, Taro; Iga, Toshiro; Takahira, Naonobu; Sugimori, Tanzo; Sugiyama, Hajime; Okano, Kunihiko; Karita, Tatsuro; Ando, Kenichi; Hamaki, Takanari; Hirayama, Teruhisa; Iwata, Ken; Matsuura, Masanori; Jingushi, Seiya.

In: Journal of Orthopaedic Science, Vol. 15, No. 1, 01.01.2010, p. 14-19.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Analysis of interobserver reliability for radiographic staging of coxarthrosis and indexes of acetabular dysplasia

T2 - A preliminary study

AU - Takatori, Yoshio

AU - Ito, Kazuya

AU - Sofue, Muroto

AU - Hirota, Yoshio

AU - Itoman, Moritoshi

AU - Matsumoto, Tadami

AU - Hamada, Yoshiki

AU - Shindo, Hiroyuki

AU - Yamada, Harumoto

AU - Yasunaga, Yuji

AU - Ito, Hiroshi

AU - Mori, Satoshi

AU - Owan, Ichiro

AU - Fujii, Genji

AU - Ohashi, Hirotsugu

AU - Mawatari, Taro

AU - Iga, Toshiro

AU - Takahira, Naonobu

AU - Sugimori, Tanzo

AU - Sugiyama, Hajime

AU - Okano, Kunihiko

AU - Karita, Tatsuro

AU - Ando, Kenichi

AU - Hamaki, Takanari

AU - Hirayama, Teruhisa

AU - Iwata, Ken

AU - Matsuura, Masanori

AU - Jingushi, Seiya

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Background: We are planning a multicenter survey on coxarthrosis and acetabular dysplasia in Japan. To collect reliable data, we performed a preliminary study to elucidate the observer agreement on assessment items. Methods: We collected radiographs of hip joints in eight patients with various findings of coxarthrosis. Twelve registered orthopedic specialists evaluated them regarding the roentgenographic stage of coxarthrosis and five indexes of acetabular dysplasia (acetabular angle, center-edge angle, acetabular roof obliquity, acetabular head quotient, approximate acetabular quotient). To assess observer agreement, we calculated the value of the kappa statistic for stages and the coefficient of variation for the indexes. The same 12 specialists then assessed the coxarthritis stage on the same radiographs 1 month after the first evaluation based on our own descriptions of the roentgenographic stages. Results: For the first evaluation of the roentgenographic stage, the value of the kappa statistic was 0.448; and for the second evaluation it was 0.600. The results of the coefficient of variation for the indexes of acetabular dysplasia, ranked in ascending order, were as follows: acetabular angle, acetabular head quotient, acetabular roof obliquity, center-edge angle, approximate acetabular quotient. Conclusions: For the upcoming multicenter survey, clear descriptions of the stages of coxarthrosis and selection of appropriate indexes can be helpful for collecting dependable results.

AB - Background: We are planning a multicenter survey on coxarthrosis and acetabular dysplasia in Japan. To collect reliable data, we performed a preliminary study to elucidate the observer agreement on assessment items. Methods: We collected radiographs of hip joints in eight patients with various findings of coxarthrosis. Twelve registered orthopedic specialists evaluated them regarding the roentgenographic stage of coxarthrosis and five indexes of acetabular dysplasia (acetabular angle, center-edge angle, acetabular roof obliquity, acetabular head quotient, approximate acetabular quotient). To assess observer agreement, we calculated the value of the kappa statistic for stages and the coefficient of variation for the indexes. The same 12 specialists then assessed the coxarthritis stage on the same radiographs 1 month after the first evaluation based on our own descriptions of the roentgenographic stages. Results: For the first evaluation of the roentgenographic stage, the value of the kappa statistic was 0.448; and for the second evaluation it was 0.600. The results of the coefficient of variation for the indexes of acetabular dysplasia, ranked in ascending order, were as follows: acetabular angle, acetabular head quotient, acetabular roof obliquity, center-edge angle, approximate acetabular quotient. Conclusions: For the upcoming multicenter survey, clear descriptions of the stages of coxarthrosis and selection of appropriate indexes can be helpful for collecting dependable results.

UR - http://www.scopus.com/inward/record.url?scp=77249167409&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77249167409&partnerID=8YFLogxK

U2 - 10.1007/s00776-009-1412-1

DO - 10.1007/s00776-009-1412-1

M3 - Article

VL - 15

SP - 14

EP - 19

JO - Journal of Orthopaedic Science

JF - Journal of Orthopaedic Science

SN - 0949-2658

IS - 1

ER -