Download PDF
CC BY-NC-ND 4.0 · Rev Bras Ortop (Sao Paulo) 2019; 54(06): 644-648
DOI: 10.1016/j.rbo.2018.04.002
Artigo Original
Sociedade Brasileira de Ortopedia e Traumatologia. Published by Thieme Revnter Publicações Ltda Rio de Janeiro, Brazil

Intra and Interobserver Agreement Regarding the Walch Classification System for Shoulder Joint Arthritis[*]

Article in several languages: português | English
Lauro José Rocchetti Pajolli
1   Departamento de Ortopedia e Traumatologia, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
,
Marcelo Casciato Carlini 
1   Departamento de Ortopedia e Traumatologia, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
,
Isabella Ferrari
1   Departamento de Ortopedia e Traumatologia, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
,
Fábio Teruo Matsunaga
1   Departamento de Ortopedia e Traumatologia, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
,
Nicola Archetti Netto
1   Departamento de Ortopedia e Traumatologia, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
,
Marcel Jun Sugawara Tamaoki
1   Departamento de Ortopedia e Traumatologia, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brasil
› Author Affiliations
Further Information

Publication History

13 October 2017

03 April 2018

Publication Date:
13 December 2019 (online)

Also available at
   Permissions and Reprints

Abstract

Objective To evaluate the inter- and intraobserver agreement regarding the Walch classification system for shoulder arthritis.

Methods Computed tomography scans of the shoulder joint of adult patients were selected between 2012 and 2016, and they were classified by physicians with different levels of expertise in orthopedics. The images were examined at three different times, and the analyses were evaluated by the Fleiss Kappa index to verify the intra- and interobserver agreement.

Results The Kappa index for the intraobserver agreement ranged from 0.305 to 0.545. The inter-observer agreement was very low at the end of the three evaluations (κ = 0.132).

Conclusion The intraobserver agreement regarding the modified Walch classification varied from moderate to poor. The interobserver agreement was low.

Keywords

shoulder joint - osteoarthritis/classification - reproducibility of results

* Work developed at Hospital da Pontifícia Universidade Católica de Campinas, Campinas, SP, Brazil. Originally Published by Elsevier.


 

  • Referências

  • 1 Cofield RH, Briggs BT. Glenohumeral arthrodesis. Operative and long-term functional results. J Bone Joint Surg Am 1979; 61 (05) 668-677
    CrossrefPubMedSearch in Google Scholar
  • 2 Day JS, Lau E, Ong KL, Williams GR, Ramsey ML, Kurtz SM. Prevalence and projections of total shoulder and elbow arthroplasty in the United States to 2015. J Shoulder Elbow Surg 2010; 19 (08) 1115-1120
    CrossrefPubMedSearch in Google Scholar
  • 3 Walch G, Badet R, Boulahia A, Khoury A. Morphologic study of the glenoid in primary glenohumeral osteoarthritis. J Arthroplasty 1999; 14 (06) 756-760
    CrossrefPubMedSearch in Google Scholar
  • 4 Bercik MJ, Kruse II K, Yalizis M, Gauci MO, Chaoui J, Walch G. A modification to the Walch classification of the glenoid in primary glenohumeral osteoarthritis using three-dimensional imaging. J Shoulder Elbow Surg 2016; 25 (10) 1601-1606
    CrossrefPubMedSearch in Google Scholar
  • 5 Viera AJ, Garrett JM. Understanding interobserver agreement: the kappa statistic. Fam Med 2005; 37 (05) 360-363
    PubMedSearch in Google Scholar
  • 6 Altman DG. Practical statistics for medical research. 3rd ed. London: Chapman and Hall; 1995
    Search in Google Scholar
  • 7 Svanholm H, Starklint H, Gundersen HJ, Fabricius J, Barlebo H, Olsen S. Reproducibility of histomorphologic diagnoses with special reference to the kappa statistic. APMIS 1989; 97 (08) 689-698
    CrossrefPubMedSearch in Google Scholar
  • 8 Matsunaga FT, Tamaoki MJ, Cordeiro EF. , et al. Are classifications of proximal radius fractures reproducible?. BMC Musculoskelet Disord 2009; 10: 120
    CrossrefPubMedSearch in Google Scholar
  • 9 Belloti JC, Tamaoki MJ, Franciozi CE. , et al. Are distal radius fracture classifications reproducible? Intra and interobserver agreement. Sao Paulo Med J 2008; 126 (03) 180-185
    CrossrefPubMedSearch in Google Scholar
  • 10 Scalise JJ, Codsi MJ, Bryan J, Brems JJ, Iannotti JP. The influence of three-dimensional computed tomography images of the shoulder in preoperative planning for total shoulder arthroplasty. J Bone Joint Surg Am 2008; 90 (11) 2438-2445
    CrossrefPubMedSearch in Google Scholar
  • 11 Budge MD, Lewis GS, Schaefer E, Coquia S, Flemming DJ, Armstrong AD. Comparison of standard two-dimensional and three-dimensional corrected glenoid version measurements. J Shoulder Elbow Surg 2011; 20 (04) 577-583
    CrossrefPubMedSearch in Google Scholar