Stem fracture with the Exeter prosthesis 3 of 27 hips followed for 10 years

Røkkum, Magne; Bye, Kjell; Hetland, Karl R.; Reigstad, Astor

doi:10.3109/17453679508995581

Cited by 26 publications

(13 citation statements)

References 18 publications

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“…In 1995, Rokkum reported on a series of 3 stem fractures in a cohort of 27 Exeter hips that were followed over 10 years [2] but this was an analysis of older style stems manufactured between 1983 and 1985. More recently, Yates et al reported on two prosthetic neck fractures, both in obese patients (BMI 33 and 49) who were very active, and with high-offset (44mm) stems [7].…”

Section: Discussionmentioning

confidence: 99%

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Prosthetic Fracture of a Cemented Exeter Femoral Stem (Case Report)

2016

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We present a single case of fracture of an Exeter femoral prosthesis at the neck, occurring after a fall from standing height, in a lean 70yr lady at 6 years post implantation. The fracture propagated from the insertion dimple on the superior aspect of the prosthesis shoulder. Materials analysis suggested variance in composition of the alloy, particularly with grain size heterogeneity. Whilst Exeter femoral prosthesis fracture is extremely rare, when it does occur the literature suggests it is often in the context of excessive mechanical stresses (obesity, high offset, falls). However, this case may represent a failure of materials rather than mechanical stresses alone.

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Section: Discussionmentioning

confidence: 99%

“…The modern or Universal Exeter stem was introduced in 1988 with the addition of more sizes and offset options while preserving the original shape and design. [2] The Exeter stem is reported to have excellent long term survival results, and failure due to stem fracture is an extremely rare occurrence. [3,4] …”

Section: Introductionmentioning

confidence: 99%

Prosthetic Fracture of a Cemented Exeter Femoral Stem (Case Report)

2016

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“…Stem fracture dramatically dropped to 0.03% (one in 2968 stems) with this modified stem [1], and reported to be 0.22% in the latest available report [7]. Though, in contrary, a high fracture rate of 11% (three in 27 stems) with this modified stem was reported by Røkkum [8]. However, extensive burnishing on the matte surface due to metal and cement debris production by fretting during stem subsidence, leading to increased osteolysis and subsequent aseptic loosening.…”

Section: Discussionmentioning

confidence: 67%

The Asian size Exeter femoral stem fracture

Chung

Cheung

Chiu

et al. 2016

Journal of Orthopaedic Science

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“…Later on, the surface finish was changed to matte, but due to an increasing rate of aseptic loosening, the matte finish was abandoned and changed back to polished finish (Røkkum et al. 1995 , van Doorn 2002). After the introduction of the current Exeter stem concept (made from wrought stainless steel with a polished surface finish) in 1986, hardware fractures have been very rare (Røkkum et al.…”

Section: Discussionmentioning

confidence: 99%