Thursday 8 September 2016

Modular Hip Hemiarthroplasty Stem

Hip fracture is a significant public health issue, with up to 75,000 cases presenting per year at an annual cost of approximately £2 billion in the UK. Globally there are over 1.5 million femoral neck fractures with 740,000 deaths, with this figure rising to 3.9 million by 2050. The increasing ageing population dictates that the burden of this condition is only set to rise to 100,000 in the UK annually by 2033, risk stratification and operative planning will be essential to avoid the burden of complications from unsuitable patient selection, the revision rate from hip hemiarthroplasty has been reported to be as high as 20% at 9 years follow up.

Hip Hemiarthroplasty Stem
There are various types of hip hemiarthroplasty prostheses available for the treatment of femoral neck fractures. Recent developments have favoured the smooth stem prosthesis inserted with cement, which is supported by NICE (National institute of clinical excellence CG124. This design of prosthesis has commonly been used for total hip replacement in the elective setting with good long term survivorship. A Cochrane review in 2006 reported that patients with cemented prostheses have less pain and a tendency to better mobility than those with uncemented prostheses.


Previous studies assessing the common cemented implants, the ETS and Thompson hemiarthroplasty, have found these prostheses to be equivalent in radiographic outcomes and surgical complications. Although the ETS has been found surgical easier to insert than the Thompson counterpart, due to the tapered smooth stem nature. To date there has been no research comparing the ETS to a modular cemented equivalent in the treatment of intra-capsular neck of femur fractures.

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