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- Document type:
- Article; Journal Article
- Author(s):
- Wiethölter, Mats; Akgün, Doruk; Plachel, Fabian; Minkus, Marvin; Karczewski, Daniel; Braun, Karl; Thiele, Kathi; Becker, Luis; Stöckle, Ulrich; Moroder, Philipp
- Title:
- Inter-Observer and Intra-Observer Reliability Assessment of the Established Classification Systems for Periprosthetic Shoulder Fractures.
- Abstract:
- This study evaluated the reliability and comprehensiveness of the Unified classification system (UCPF), Wright & Cofield, Worland and Kirchhoff classifications and related treatment recommendations for periprosthetic shoulder fractures (PPSFx). Two shoulder arthroplasty specialists (experts) and two orthopaedic residents (non-experts) assessed 20 humeral-sided and five scapula-sided cases of PPSFx. We used the unweighted Cohen's Kappa (κ) for measuring the intra-observer reliability and Krippendorff's alpha (α) for measuring the inter-observer reliability. The inter-rater reliabilities for the Wright & Cofield and Worland classifications were substantial for all groups. The expert and non-expert groups for UCPF also showed substantial inter-rater agreement. The all-rater group for the UCPF and the expert and non-expert group for the Kirchhoff classification revealed moderate inter-rater reliability. For the Kirchhoff classification, only fair inter-rater reliability was found for the non-expert group. Almost perfect intra-rater reliability was measured for all groups of the Wright & Cofield classification and the all-rater and expert groups of the UCPF. All groups of the Kirchhoff and Worland classifications and the group of non-experts for the UCPF had substantial intra-rater reliabilities. Regarding treatment recommendations, substantial inter-rater and moderate intra-rater reliabilities were found. Simple classification systems for PPSFx (Wright & Cofield, Worland) show the highest inter- and intra-observer reliability but lack comprehensiveness as they fail to describe scapula-sided fractures. The complex Kirchhoff classification shows limited reliability. The UCPF seems to offer an acceptable combination of comprehensiveness and reliability.
- Journal title abbreviation:
- J Clin Med
- Year:
- 2023
- Journal volume:
- 12
- Journal issue:
- 9
- Fulltext / DOI:
- doi:10.3390/jcm12093168
- Pubmed ID:
- http://view.ncbi.nlm.nih.gov/pubmed/37176610
- TUM Institution:
- Klinik und Poliklinik für Unfallchirurgie (Prof. Biberthaler)
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