Hemiarthroplasty for a displaced femoral neck fracture: with or without bone cement?
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With great interest, we have read the paper by Kumar et al. . In this paper, the authors conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) comparing cemented and cementless hemiarthroplasty in the treatment of femoral neck fractures. The authors excluded RCTs which studied outdated and rarely used stems (e.g., Austin Moore and Thompson). We agree with the authors that these stems are less relevant today and might have influenced the results of previously published meta-analyses. Therefore, we conducted a comparable meta-analysis with currently relevant stems in 2017 .
Shortly after our publication, a relevant RCT was published by Moerman et al. . This publication was identified by the systematic literature search conducted by Kumar et al., who included no other additional RCTs in the pooling of results. Furthermore, they did not include two RCTs [4, 5], which were included in our meta-analysis. Talsnes et al.  compared the cementless...
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The author(s) declare that they have no competing interests.
- 3.Moerman S, Mathijssen NMC, Niesten DD, Riedijk R, Rijnberg WJ, Koeter S et al (2017) More complications in uncemented compared to cemented hemiarthroplasty for displaced femoral neck fractures: a randomized controlled trial of 201 patients, with one year follow-up. BMC Musculoskelet Disord 18(1):169CrossRefGoogle Scholar
- 4.Talsnes O, Hjelmstedt F, Pripp AH, Reikeras O, Dahl OE (2013) No difference in mortality between cemented and uncemented hemiprosthesis for elderly patients with cervical hip fracture. A prospective randomized study on 334 patients over 75 years. Arch Orthop Trauma Surg 133(6):805–809CrossRefGoogle Scholar