Abstract
Purpose
To investigate whether anatomic and straight stems could reproduce the anteroposterior distance (AD) of the native femoral head and evaluate the effect of AD of the femoral head on range of motion (ROM) and bony impingement.
Methods
This retrospective simulation study included 64 patients who had undergone primary total hip arthroplasty between 2012 and 2014. Using computed tomography (CT)–based templating software, anatomic and straight stems were inserted with same alignment. AD of the head centre was compared between the two stems and native anatomy. Furthermore, post-operative ROM was calculated, and correlation between AD and ROM was assessed.
Results
There was a strong positive correlation between native anteversion (mean 21.9°) and anatomic stem anteversion (mean 22.5°) (R = 0.975, P < 0.001). There was no significant difference in AD between the native and anatomic stems (mean 37.7 and 38.8 mm, respectively), but AD of the straight stem was significantly lower than that of the native and anatomic stems. The straight stem showed a significantly lower ROM in flexion and internal rotation angles with 90° flexion (IR) than the anatomic stem (P < 0.05 and P < 0.001, respectively). AD showed a stronger correlation with ROM of IR than with stem anteversion.
Conclusions
The anatomic stem could reproduce AD of the native femoral head centre, but the head centre of the straight stem in the same anteversion with anatomic stem translated significantly posterior, significantly decreasing the ROM of flexion and IR and increasing bony impingement of IR. To avoid bony impingement and acquire sufficient ROM, reproducing AD was important.
Similar content being viewed by others
References
Gwam CU, Mistry JB, Mohamed NS et al (2017) Current epidemiology of revision total hip arthroplasty in the United States: national inpatient sample 2009 to 2013. J Arthroplast 32:2088–2092
Falez F, Papalia M, Favetti F, Panegrossi G, Casella F, Mazzotta G (2017) Total hip arthroplasty instability in Italy. Int Orthop 41:635–644
Widmer KH, Zurfluh B (2004) Compliant positioning of total hip components for optimal range of motion. J Orthop Res 22:815–821
Weber M, Woerner M, Craiovan B et al (2016) Current standard rules of combined anteversion prevent prosthetic impingement but ignore osseous contact in total hip arthroplasty. Int Orthop 40:2495–2504
Shoji T, Yasunaga Y, Yamasaki T, Mori R, Hamanishi M, Ochi M (2013) Bony impingement depends on the bone morphology of the hip after total hip arthroplasty. Int Orthop 37:1897–1903
Hetsroni I, Poultsides L, Bedi A, Larson CM, Kelly BT (2013) Anterior inferior iliac spine morphology correlates with hip range of motion: a classification system and dynamic model. Clin Orthop Relat Res 471:2497–2503
Hirata M, Nakashima Y (2015) Optimal anterior femoral offset for functional range of motion in total hip arthroplasty — a computer simulation study. Int Orthop 39:645–651
Noble PC, Alexander JW, Lindahl LJ, Yew DT, Granberry WM, Tullos HS (1988) The anatomic basis of femoral component design. Clin Orthop Relat Res 235:148–165
Shoji T, Yamasaki T, Izumi S et al (2017) Factors affecting the potential for posterior bony impingement after total hip arthroplasty. Bone Joint J 99B:1140–1146
Ohmori T, Kabata T, Kajino Y et al (2018) Differences in range of motion with the same combined anteversion after total hip arthroplasty. Int Orthop 42:1021–1028
Miki H, Kyo T, Sugano N (2012) Anatomical hip range of motion after implantation during total hip arthroplasty with a large change in pelvic inclination. J Arthroplast 27:1641–1650.e1
Kingsley PC, Olmsted KL (1948) A study to determine the angle of anteversion of the neck of the femur. J Bone Joint Surg Am 30A:745–751
Sugano N, Noble PC, Kamaric E, Salama JK, Ochi T, Tullos HS (1998) The morphology of the femur in developmental dysplasia of the hip. J Bone Joint Surg Br 80:711–719
Khanuja BHS, Vakil JJ, Goddard MS, Mont MA (2011) Cementless femoral fixation in total hip arthroplasty. J Bone Joint Surg Am 93:500–509
Yoshitani J, Kabata T, Kajino Y, Takagi T, Ohmori T, Ueno T (2018) The effect of flexion alignment in total hip arthroplasty with a cementless tapered wedge femoral stem. Eur J Orthop Surg Traumatol 28:1625–1632
Worlicek M, Weber M, Craiovan B et al (2016) Native femoral anteversion should not be used as reference in cementless total hip arthroplasty with a straight, tapered stem: a retrospective clinical study. BMC Musculoskelet Disord 17:1–8
Müller M, Crucius D, Perka C, Tohtz S (2011) The association between the sagittal femoral stem alignment and the resulting femoral head centre in total hip arthroplasty. Int Orthop 35:981–987
Miki H, Sugano N (2011) Modular neck for prevention of prosthetic impingement in cases with excessively anteverted femur. Clin Biomech (Bristol, Avon) 26:944–949
Taniguchi N, Jinno T, Koga D et al (2017) Cementless hip stem anteversion in the dysplastic hip: a comparison of tapered wedge vs metaphyseal filling. J Arthroplast 32:1547–1552
Yoshitani J, Nakamura T, Maruhashi Y, Sasagawa T, Ueshima K, Funaki K (2019) Modular stem fracture at stem-sleeve junction after primary total hip arthroplasty. J Orthop Sci 24:170–173
Tsukeoka T, Tsuneizumi Y, Lee TH (2015) A useful anatomical reference guide for stem anteversion during total hip arthroplasty in the dysplastic hip. J Arthroplast 30:1393–1396
Woerner M, Weber M, Sendtner E, Springorum R, Worlicek M, Craiovan B et al (2017) Soft tissue restricts impingement-free mobility in total hip arthroplasty. Int Orthop 41:277–282
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Ethical approval
This investigational protocol was conducted with the approval of the institution’s ethics committee.
Informed consent
All patients gave their consent for the use of their data prior to surgery.
Ethical review committee statement
This investigational protocol was conducted with the approval of the Kanazawa University Graduate School of Medical Science Ethics Committee.
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
Yoshitani, J., Kabata, T., Kajino, Y. et al. Anatomic stem inserted according to native anteversion could reproduce the native anterior distance of the femoral head and decrease bony impingement in total hip arthroplasty. International Orthopaedics (SICOT) 44, 245–251 (2020). https://doi.org/10.1007/s00264-019-04394-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00264-019-04394-y