Abstract
Purpose
Due to improved prosthesis designs and surgical techniques, indications for total hip arthroplasty (THA) now include younger and more active patients. Preserving bone stock and soft tissue in these patients is paramount to allow for future revision. Designed for anatomical reconstruction, short femoral stems have the potential to reduce adaptive bone loss and stress shielding. To confirm this, we evaluated bone remodeling around a short femoral stem and the accuracy of hip joint reconstruction.
Methods
This prospective observational study involved 46 patients with short-stem THA for clinical and radiographic analysis. We evaluated bone remodeling by Gruen zone using dual-energy X-ray absorptiometry in 45 patients and assessed the accuracy of hip joint reconstruction using caput-collum-diaphyseal angles. Additionally, we reported functional scores and pain.
Results
Patients were followed for a mean of 24.1 (SD 2.2) months. Bone mineral density increased mainly in the lateral region (Gruen zones 2 and 3) and in the distal-medial region (Gruen zone 5), suggestive of lateral loading. Most caput-collum-diaphyseal angles remained stable after surgery, especially in patients with varus hips. Harris Hip Scores improved significantly, from 57.2 (SD 20.0) pre-operatively to 97.2 (SD 4.0) at 24 months post-operatively (P < 0.0001). Finally, we encountered one peri-operative dislocation but no post-operative complications.
Conclusion
Short femoral stems successfully limited stress shielding and minimized periprosthetic bone loss without compromising primary stability. We were able to accurately reconstruct anatomical relationships in most patients. Finally, excellent clinical outcomes and low complication rates confirmed the favourable results of short-stem THA.
Trial registration: DRKS00017076
Similar content being viewed by others
References
Kärrholm J, Mohaddes M, Odin D, Vinblad J, Rogmark C, Rolfson O (2018) Annual report 2017. Swedish Hip Arthroplasty Register
Bieger R, Ignatius A, Decking R, Claes L, Reichel H, Durselen L (2012) Primary stability and strain distribution of cementless hip stems as a function of implant design. Clin Biomech (Bristol, Avon) 27(2):158–164. https://doi.org/10.1016/j.clinbiomech.2011.08.004
Falez F, Casella F, Panegrossi G, Favetti F, Barresi C (2008) Perspectives on metaphyseal conservative stems. J Orthop Traumatol 9(1):49–54. https://doi.org/10.1007/s10195-008-0105-4
Karachalios T, Palaiochorlidis E, Komnos G (2019) Clinical relevance of bone remodelling around conventional and conservative (short-stem) total hip arthroplasty implants. Hip Int 29(1):4–6. https://doi.org/10.1177/1120700018810846
Chen HH, Morrey BF, An KN, Luo ZP (2009) Bone remodeling characteristics of a short-stemmed total hip replacement. J Arthroplast 24(6):945–950. https://doi.org/10.1016/j.arth.2008.07.014
Bieger R, Ignatius A, Reichel H, Durselen L (2013) Biomechanics of a short stem: in vitro primary stability and stress shielding of a conservative cementless hip stem. J Orthop Res 31(8):1180–1186. https://doi.org/10.1002/jor.22349
Gronewold J, Berner S, Olender G, Hurschler C, Windhagen H, von Lewinski G, Floerkemeier T (2014) Changes in strain patterns after implantation of a short stem with metaphyseal anchorage compared to a standard stem: an experimental study in synthetic bone. Orthop Rev 6(1):5211. https://doi.org/10.4081/or.2014.5211
Freeman MA, Plante-Bordeneuve P (1994) Early migration and late aseptic failure of proximal femoral prostheses. J Bone Joint Surg (Br) 76(3):432–438
Salemyr M, Muren O, Ahl T, Boden H, Eisler T, Stark A, Skoldenberg O (2015) Lower periprosthetic bone loss and good fixation of an ultra-short stem compared to a conventional stem in uncemented total hip arthroplasty. Acta Orthop 86(6):659–666. https://doi.org/10.3109/17453674.2015.1067087
Lindahl H (2007) Epidemiology of periprosthetic femur fracture around a total hip arthroplasty. Injury 38(6):651–654. https://doi.org/10.1016/j.injury.2007.02.048
Lerch M, von der Haar-Tran A, Windhagen H, Behrens BA, Wefstaedt P, Stukenborg-Colsman CM (2012) Bone remodelling around the Metha short stem in total hip arthroplasty: a prospective dual-energy X-ray absorptiometry study. Int Orthop 36(3):533–538. https://doi.org/10.1007/s00264-011-1361-0
Mortimer ES, Rosenthall L, Paterson I, Bobyn JD (1996) Effect of rotation on periprosthetic bone mineral measurements in a hip phantom. Clin Orthop Relat Res 324:269–274
DeLee JG, Charnley J (1976) Radiological demarcation of cemented sockets in total hip replacement. Clin Orthop Relat Res 121:20–32
Gruen TA, McNeice GM, Amstutz HC (1979) “Modes of failure” of cemented stem-type femoral components: a radiographic analysis of loosening. Clin Orthop Relat Res 141:17–27
Freitag T, Hein MA, Wernerus D, Reichel H, Bieger R (2016) Bone remodelling after femoral short stem implantation in total hip arthroplasty: 1-year results from a randomized DEXA study. Arch Orthop Trauma Surg 136(1):125–130. https://doi.org/10.1007/s00402-015-2370-z
Brinkmann V, Radetzki F, Delank KS, Wohlrab D, Zeh A (2015) A prospective randomized radiographic and dual-energy X-ray absorptiometric study of migration and bone remodeling after implantation of two modern short-stemmed femoral prostheses. J Orthop Traumatol 16(3):237–243. https://doi.org/10.1007/s10195-015-0335-1
Lerch M, Kurtz A, Windhagen H, Bouguecha A, Behrens BA, Wefstaedt P, Stukenborg-Colsman CM (2012) The cementless Bicontact stem in a prospective dual-energy X-ray absorptiometry study. Int Orthop 36(11):2211–2217. https://doi.org/10.1007/s00264-012-1616-4
Lindalen E, Dahl J, Nordsletten L, Snorrason F, Hovik O, Rohrl S (2012) Reverse hybrid and cemented hip replacement compared using radiostereometry and dual-energy X-ray absorptiometry: 43 hips followed for 2 years in a prospective trial. Acta Orthop 83(6):592–598. https://doi.org/10.3109/17453674.2012.742393
Parchi PD, Cervi V, Piolanti N, Ciapini G, Andreani L, Castellini I, Poggetti A, Lisanti M (2014) Densitometric evaluation of periprosthetic bone remodeling. Clin Cases Mineral Bone Metab 11(3):226–231
Jacobs JJ, Sumner DR, Galante JO (1993) Mechanisms of bone loss associated with total hip replacement. Orthop Clin North Am 24(4):583–590
Leichtle UG, Leichtle CI, Schmidt B, Martini F (2006) Peri-prosthetic bone density after implantation of a custom-made femoral component. A five-year follow-up. J Bone Joint Surg Brit 88(4):467–471. https://doi.org/10.1302/0301-620x.88b4.16613
Ang KC, Das De S, Goh JC, Low SL, Bose K (1997) Periprosthetic bone remodelling after cementless total hip replacement. A prospective comparison of two different implant designs. J Bone Joint Surg Brit 79(4):675–679
Gulow J, Scholz R, Freiherr von Salis-Soglio G (2007) Short-stemmed endoprostheses in total hip arthroplasty. Der Orthopade 36(4):353–359. https://doi.org/10.1007/s00132-007-1071-x
Flecher X, Ollivier M, Argenson JN (2016) Lower limb length and offset in total hip arthroplasty. Orthop Traumatol Surg Res 102(1 Suppl):S9–S20. https://doi.org/10.1016/j.otsr.2015.11.001
Gombar C, Janositz G, Friebert G, Sisak K (2019) The DePuy Proxima short stem for total hip arthroplasty - excellent outcome at a minimum of 7 years. J Orthop Surg (Hong Kong) 27(2):2309499019838668. https://doi.org/10.1177/2309499019838668
Pivec R, Johnson AJ, Mears SC, Mont MA (2012) Hip arthroplasty. Lancet (London, England) 380(9855):1768–1777. https://doi.org/10.1016/s0140-6736(12)60607-2
Pospula W, Abu Noor T, Roshdy T, Al Mukaimi A (2008) Cemented and cementless total hip replacement. Critical analysis and comparison of clinical and radiological results of 182 cases operated in Al Razi Hospital, Kuwait. Med Princ Pract 17(3):239–243. https://doi.org/10.1159/000117799
Roth A, Richartz G, Sander K, Sachse A, Fuhrmann R, Wagner A, Venbrocks RA (2005) Periprosthetic bone loss after total hip endoprosthesis. Dependence on the type of prosthesis and preoperative bone configuration. Der Orthopade 34(4):334–344. https://doi.org/10.1007/s00132-005-0773-1
Boden HS, Skoldenberg OG, Salemyr MO, Lundberg HJ, Adolphson PY (2006) Continuous bone loss around a tapered uncemented femoral stem: a long-term evaluation with DEXA. Acta Orthop 77(6):877–885. https://doi.org/10.1080/17453670610013169
Acknowledgments
Medical Minds GmbH provided medical writing and editorial support. Dominik Pfluger carried out the statistical analysis.
Funding
The work was partially supported by Mathys Ltd. Bettlach. Funds sponsored statistical analysis through an independent consultant as well as medical writing and editorial support from a medical writing agency. No other external sources were involved.
Author information
Authors and Affiliations
Contributions
All authors contributed equally to the study.
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Ethical approval
The local ethics committee reviewed and approved the study protocol; the institutional review board also approved the study (ethics approval registration number: EK 19/14; issue date: 16 June 2014). Additionally, the study was registered with the German Clinical Trials Register (clinical trial registration number: DRKS00017076). We conducted the study in accordance with the study protocol, the latest Helsinki Declaration, and good clinical practice guidelines.
Informed consent
Informed consent was obtained from all individual participants included in the study.
Additional information
Publisher’s note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Hochreiter, J., Mattiassich, G., Ortmaier, R. et al. Femoral bone remodeling after short-stem total hip arthroplasty: a prospective densitometric study. International Orthopaedics (SICOT) 44, 753–759 (2020). https://doi.org/10.1007/s00264-020-04486-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00264-020-04486-0