Abstract
Purpose
The purpose of this study was to investigate the mechanical strength of both monoplanar and biplanar medial opening-wedge high tibial osteotomy (MOWHTO) procedures and assess the risk of lateral cortex disruption for both techniques.
Methods
Twelve synthetic tibia models with cortical shells were used as test models. Saw cuts for monoplanar MOWHTO and biplanar MOWHTO were generated on the test models in equal numbers (n = 6 for both groups). Wedge opening load and wedge gap distance were evaluated via compressive tests.
Results
The mean gap distance just before the lateral cortex fracture in the monoplanar group was 14.7 ± 2.9 mm, which was significantly narrower than that in the biplanar group of 19.1 ± 2.0 mm (p = 0.015). The mean load just before the occurrence of lateral cortex fracture of 32.4 ± 3.2 N in the monoplanar osteotomy group was significantly lower than that in the biplanar osteotomy group of 111.8 ± 9.3 N (p = 0.009).
Conclusion
Performing a MOWHTO via the biplanar rather than the monoplanar technique allows larger-sized wedges to be opened with less risk of lateral cortical fracture. Thus, larger gaps can be opened and higher angle corrections can be achieved using the biplanar osteotomy procedure. From a clinical viewpoint, the biplanar osteotomy technique reduced the risk of lateral cortical hinge fracture during MOWHTO.
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References
Agneskirchner JD, Freiling D, Hurschler C, Lobenhoffer P (2006) Primary stability of four different implants for opening wedge high tibial osteotomy. Knee Surg Sports Traumatol Arthrosc 14(3):291–300
Chae DJ, Shetty GM, Wang KH, Montalban AS Jr, Kim JI, Nha KW (2011) Early complications of medial opening wedge high tibial osteotomy using autologous tricortical iliac bone graft and T-plate fixation. Knee 18(4):278–284
Coventry MB (1965) Osteotomy of the upper portion of the tibia for degenerative arthritis of the knee. A preliminary report. J Bone Joint Surg Am 47:984–990
Coventry MB, Ilstrup DM, Wallrichs SL (1993) Proximal tibial osteotomy. A critical long-term study of eighty-seven cases. J Bone Joint Surg Am 75(2):196–201
Elmalı N, Esenkaya I, Can M, Karakaplan M (2013) Monoplanar versus biplanar medial open-wedge proximal tibial osteotomy for varus gonarthrosis: a comparison of clinical and radiological outcomes. Knee Surg Sports Traumatol Arthrosc 21(12):2689–2695
Han SB, Lee DH, Shetty GM, Chae DJ, Song JG, Nha KW (2013) A “safe zone” in medial open-wedge high tibia osteotomy to prevent lateral cortex fracture. Knee Surg Sports Traumatol Arthrosc 21(1):90–95
Hernigou P, Medevielle D, Debeyre J, Goutallier D (1987) Proximal tibial osteotomy for osteoarthritis with varus deformity. A ten to thirteen-year follow-up study. J Bone Joint Surg Am 69(3):332–354
Insall JN, Joseph DM, Msika C (1984) High tibial osteotomy for varus gonarthrosis. A long-term follow-up study. J Bone Joint Surg Am 66(7):1040–1048
Jacobi M, Wahl P, Jakob RP (2010) Avoiding intraoperative complications in open-wedge high tibial valgus osteotomy: technical advancement. Knee Surg Sports Traumatol Arthrosc 18(2):200–203
Kazimoğlu C, Akdoğan Y, Sener M, Kurtulmuş A, Karapinar H, Uzun B (2008) Which is the best fixation method for lateral cortex disruption in the medial open wedge high tibial osteotomy? A biomechanical study. Knee 15(4):305–308
Lobenhoffer P, Agneskirchner JD (2003) Improvements in surgical technique of valgus high tibial osteotomy. Knee Surg Sports Traumatol Arthrosc 11(3):132–138
Lobenhoffer P, De Simoni C, Staubli A (2002) Open-wedge high-tibial osteotomy with rigid plate fixation. Tech Knee Surg 1:93–105
Lustig S, Scholes CJ, Costa AJ, Coolican MJ, Parker DA (2013) Different changes in slope between the medial and lateral tibial plateau after open-wedge high tibial osteotomy. Knee Surg Sports Traumatol Arthrosc 21(1):32–38
Madry H, Ziegler R, Orth P, Goebel L, Ong MF, Kohn D, Cucchiarini M, Pape D (2012) Effect of open wedge high tibial osteotomy on the lateral compartment in sheep. Part I: analysis of the lateral meniscus. Knee Surg Sports Traumatol Arthrosc 21(1):39–48
Miller BS, DorseyWO BC, Austin JC (2005) The effect of lateral cortex disruption and repair on the stability of medial opening wedge high tibial osteotomy. Am J Sports Med 33(10):1552–1557
Miller BS, Downie B, McDonough EB, Wojtys EM (2009) Complications after medial opening wedge high tibial osteotomy. Arthroscopy 25(6):639–646
Nelissen EM, van Langelaan EJ, Nelissen RG (2010) Stability of medial opening wedge high tibial osteotomy: a failure analysis. Int Orthop 34(2):217–223
Paccola CA, Fogagnolo F (2005) Open-wedge high tibial osteotomy: a technical trick to avoid loss of reduction of the opposite cortex. Knee Surg Sports Traumatol Arthrosc 13(1):19–22
Pape D, Adam F, Rupp S, Seil R, Kohn D (2004) Stability, bone healing and loss of correction after valgus realignment of the tibial head. A roentgen stereometry analysis. Orthopade 33(2):208–217
Pape D, Madry H (2013) The preclinical sheep model of high tibial osteotomy relating basic science to the clinics: standards, techniques and pitfalls. Knee Surg Sports Traumatol Arthrosc 21(1):228–236
Rho JY, Tsui TY, Pharr GM (1997) Elastic properties of human cortical and trabecular lamellar bone measured by nanoindentation. Biomaterials 18:1325–1330
Rose T, Imhoff AB (2007) Complications after transgenicular osteotomies. Oper Tech Orthop 17:80–86
Saengnipanthkul S (2012) Uni-condyle high tibial osteotomy for malunion of medial plateau fracture: surgical technique and case report. J Med Assoc Thai 95(12):1619–1624
Spahn G (2004) Complications in high tibial (medial opening wedge) osteotomy. Arch Orthop Trauma Surg 124(10):649–653
Spahn G, Wittig R (2002) Primary stability of various implants in tibial opening wedge osteotomy: a biomechanical study. J Orthop Sci 7(6):683–687
Stoffel K, Stachowiak G, Kuster M (2004) Open wedge high tibial osteotomy: biomechanical investigation of the modified Arthrex osteotomy plate (Puddu Plate) and the TomoFix Plate. Clin Biomech (Bristol, Avon) 19(9):944–950
Takeuchi R, Ishikawa H, Kumagai K, Yamaguchi Y, Chiba N, Akamatsu Y, Saito T (2012) Fractures around the lateral cortical hinge after a medial opening-wedge high tibial osteotomy: a new classification of lateral hinge fracture. Arthroscopy 28(1):85–94
Türkmen F, Sever C, Kacıra BK, Demirayak M, Acar MA, Toker S (2014) Medial opening-wedge high tibial osteotomy fixation with short plate without any graft, synthetic material or spacer. Eur J Orthop Surg Traumatol 24(8):1549–1555
van Heerwaarden R, Najfeld M, Brinkman M, Seil R, Madry H, Pape D (2013) Wedge volume and osteotomy surface depend on surgical technique for distal femoral osteotomy. Knee Surg Sports Traumatol Arthrosc 21(1):206–212
van Raaij TM, Brouwer RW, de Vlieger R, Reijman M, Verhaar JA (2008) Opposite cortical fracture in high tibial osteotomy: lateral closing compared to the medial opening-wedge technique. Acta Orthop 79(4):508–514
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Türkmen, F., Kaçıra, B.K., Özkaya, M. et al. Comparison of monoplanar versus biplanar medial opening-wedge high tibial osteotomy techniques for preventing lateral cortex fracture. Knee Surg Sports Traumatol Arthrosc 25, 2914–2920 (2017). https://doi.org/10.1007/s00167-016-4049-6
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DOI: https://doi.org/10.1007/s00167-016-4049-6
Keywords
- Monoplanar
- Biplanar
- Medial opening wedge
- High tibial osteotomy
- Lateral cortex fracture