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Heterotopic ossification after reverse total shoulder arthroplasty

(2016) BONE & JOINT JOURNAL. 98B(9). p.1215-1221
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Organization
Abstract
Aims : Heterotopic ossification (HO) occurs after arthroplasty, especially total hip arthroplasty. In this study we describe the incidence, evolution, morphology and clinical consequences of HO following reverse shoulder arthroplasty. Patients and Methods : This is a single-centre retrospective study of 132 consecutive patients who received a Delta III or Delta Xtend reverse total shoulder arthroplasty between 2006 and 2013 for the treatment of cuff tear arthropathy. There were 96 women and 36 men. Their mean age at the time of surgery was 69 years (49 to 89) and the mean follow-up was 36 months (12 to 84). The incidence, evolution, morphology and clinical consequences of HO using the Constant-Murley score (CS) were analysed. A modified Brooker classification of HO of the hip was used. Results : HO was seen in 39 patients (29.5%). A total of 31 of these patients (81.6%) began to develop HO by three months post-operatively. According to the Hamada classification, 11 patients had grade la, eight had grade 1b, six had grade 1c and 14 had grade 2 HO. The HO evolved over a mean of 8.3 months (3 to 21). Patients with HO had a lower mean CS at three (p = 0.017), six (p < 0.001) and 12 months (p < 0.001) post-operatively. HO was not associated with notching (p = 0.675). Conclusion : HO after reverse shoulder arthroplasty is a non-progressive condition without long-term clinical consequences. Only grade 2 HO is clinically relevant with a negative effect on the function of the shoulder during its development.
Keywords
FRACTURE, WEAR, PROSTHESIS, TOTAL HIP-ARTHROPLASTY, COMPLICATIONS, CUFF

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MLA
Verhofsté, Bram, et al. “Heterotopic Ossification after Reverse Total Shoulder Arthroplasty.” BONE & JOINT JOURNAL, vol. 98B, no. 9, 2016, pp. 1215–21, doi:10.1302/0301-620X.9869.37761.
APA
Verhofsté, B., Decock, T., Van Tongel, A., & De Wilde, L. (2016). Heterotopic ossification after reverse total shoulder arthroplasty. BONE & JOINT JOURNAL, 98B(9), 1215–1221. https://doi.org/10.1302/0301-620X.9869.37761
Chicago author-date
Verhofsté, Bram, T Decock, Alexander Van Tongel, and Lieven De Wilde. 2016. “Heterotopic Ossification after Reverse Total Shoulder Arthroplasty.” BONE & JOINT JOURNAL 98B (9): 1215–21. https://doi.org/10.1302/0301-620X.9869.37761.
Chicago author-date (all authors)
Verhofsté, Bram, T Decock, Alexander Van Tongel, and Lieven De Wilde. 2016. “Heterotopic Ossification after Reverse Total Shoulder Arthroplasty.” BONE & JOINT JOURNAL 98B (9): 1215–1221. doi:10.1302/0301-620X.9869.37761.
Vancouver
1.
Verhofsté B, Decock T, Van Tongel A, De Wilde L. Heterotopic ossification after reverse total shoulder arthroplasty. BONE & JOINT JOURNAL. 2016;98B(9):1215–21.
IEEE
[1]
B. Verhofsté, T. Decock, A. Van Tongel, and L. De Wilde, “Heterotopic ossification after reverse total shoulder arthroplasty,” BONE & JOINT JOURNAL, vol. 98B, no. 9, pp. 1215–1221, 2016.
@article{8109188,
  abstract     = {{Aims : Heterotopic ossification (HO) occurs after arthroplasty, especially total hip arthroplasty. In this study we describe the incidence, evolution, morphology and clinical consequences of HO following reverse shoulder arthroplasty. 
Patients and Methods : This is a single-centre retrospective study of 132 consecutive patients who received a Delta III or Delta Xtend reverse total shoulder arthroplasty between 2006 and 2013 for the treatment of cuff tear arthropathy. There were 96 women and 36 men. Their mean age at the time of surgery was 69 years (49 to 89) and the mean follow-up was 36 months (12 to 84). The incidence, evolution, morphology and clinical consequences of HO using the Constant-Murley score (CS) were analysed. A modified Brooker classification of HO of the hip was used. 
Results : HO was seen in 39 patients (29.5%). A total of 31 of these patients (81.6%) began to develop HO by three months post-operatively. According to the Hamada classification, 11 patients had grade la, eight had grade 1b, six had grade 1c and 14 had grade 2 HO. The HO evolved over a mean of 8.3 months (3 to 21). Patients with HO had a lower mean CS at three (p = 0.017), six (p < 0.001) and 12 months (p < 0.001) post-operatively. HO was not associated with notching (p = 0.675). 
Conclusion : HO after reverse shoulder arthroplasty is a non-progressive condition without long-term clinical consequences. Only grade 2 HO is clinically relevant with a negative effect on the function of the shoulder during its development.}},
  author       = {{Verhofsté, Bram and Decock, T and Van Tongel, Alexander and De Wilde, Lieven}},
  issn         = {{2049-4394}},
  journal      = {{BONE & JOINT JOURNAL}},
  keywords     = {{FRACTURE,WEAR,PROSTHESIS,TOTAL HIP-ARTHROPLASTY,COMPLICATIONS,CUFF}},
  language     = {{eng}},
  number       = {{9}},
  pages        = {{1215--1221}},
  title        = {{Heterotopic ossification after reverse total shoulder arthroplasty}},
  url          = {{http://doi.org/10.1302/0301-620X.9869.37761}},
  volume       = {{98B}},
  year         = {{2016}},
}

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