Three dimensional stress analysis of the femoral stem of a total hip prosthesis

Hampton, S.J.; Andriacchi, T.P.; Galante, Jorge O.

doi:10.1016/0021-9290(80)90038-x

Cited by 53 publications

(18 citation statements)

References 7 publications

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“…Finite element analysis has shown high concentration of stress in areas along the distal third of uncemented hip stems in the femur [9]. Moreover, 3D analysis of the longitudinal stress on the surface of the stem has reported to produce peak forces towards the distal end of the implant [19].…”

Section: Discussionmentioning

confidence: 98%

Laser engravings as reason for mechanical failure of titanium-alloyed total hip stems

Kluess

Steinhauser

Joseph

et al. 2015

Arch Orthop Trauma Surg

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Section: Discussionmentioning

confidence: 98%

Laser engravings as reason for mechanical failure of titanium-alloyed total hip stems

Kluess

Steinhauser

Joseph

et al. 2015

Arch Orthop Trauma Surg

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“…Three-dimensional analysis dictates highest stress concentrations are around the lateral aspect of the middle third of the femoral stem. Hence, a fracture of the stem usually originates from its anterolateral aspect 4 . Femoral stem failure can be broadly categorised to patient-specific factors, 5 technical issues 6,7 or implant related factors 7,8 …”

Section: Introductionmentioning

confidence: 99%

A modified technique to extract fractured femoral stem in revision total hip arthroplasty: A report of two cases

Akrawi

Magra

Shetty

et al. 2014

International Journal of Surgery Case Reports

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INTRODUCTIONThe removal of well-fixed broken femoral component and cement mantle can be extremely demanding, time consuming and potentially damaging to the host bone. Different methods have been described to extract broken femoral stem yet this remains one of the most challenging prospect to the revision hip surgeon.PRESENTATION OF CASEThe authors present two cases underwent a modified sliding cortical window technique utilising a tungsten carbide drill, Charnley pin retractor and an orthopaedic mallet to aid extraction of a fractured cemented femoral stem in revision total hip arthroplasty.DISCUSSIONThe modified technique offers a simple and controlled method in extracting a well fixed fractured cemented femoral stem. It has the advantage of retaining the cement mantle with subsequent good seal of the femoral cortical window secured with cable ready system. Furthermore, tungsten carbide drill bit and Charnley pin retractor are relatively readily available to aid the extraction of the broken stem. Finally, it yields the option of implanting a standard femoral stem and obviates the need for bypassing the cortical window with long revision femoral component.CONCLUSIONFractured femoral stem is a rare yet a complex and very demanding prospect to both patients and hip surgeons. The sliding cortical window technique utilising tungsten carbide drill and Charnley pin retractor is technically easy and most importantly; preserves host bone stock with cement-in-cement revision hip arthroplasty. We believe this technique can be added to the armamentarium of revision hip surgeon when faced with the challenge of extracting a fractured cemented femoral stem.

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“…Conclusions from his study showed flexible stems reduced stress shielding and bone resorption, however, increasing proximal interface stresses. Hampton et al [2] verified stress distributions responsible for most clinically observed failures in hip prosthesis. In addition, Brown et al [3] investigated stress redistribution in femoral head from bone osteonecrosis.…”

Section: Literature Reviewmentioning

confidence: 99%

“…In McNamara [5], the experimental and numerical strains of an implanted prosthesis is compared. Stress analysis of femoral stem of a total hip prosthesis was done by Hamptton et al [2]. Huiskes et al [1] studied the relationship between stress shielding and bone resorption around hip stem.…”

Section: Literature Reviewmentioning

confidence: 99%