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Clinical Trial Summary

Fractures of the upper part of the femur may be treated with intramedullary nails. There are different designs to choose from. The intention of this RCT is to compare two nails with some of the same properties, but with different lengths. Usually, it is the surgeon who decides which nail to be used. The literature indicates that there is a lack of good evidence in the decision-making, and that the choice often depends on personal preferences and experience of the surgeon. Therefore, the investigators want to compare whether one of the nails has a better outcome than the other, and in that way be able to give some clearer guidelines for treatment. Patients will be randomized into two groups, one receiving a long nail and one receiving an extended-short nail and compare surgical and functional outcomes. Information from the operation and subsequent check-ups will be analysed. The hypothesis is that the extended-short nail can reduce operating time, bleeding, fluoroscopy time and give equal or better functional outcome, without increasing reoperation rates or mortality.


Clinical Trial Description

Background Intramedullary nails have in recent years become the preferred technique compared to DHS when treating proximal femur fractures. A Norwegian RCT has showed the same frequency of postoperative pain, functional outcome and rate of reoperations comparing the two techniques. Nails are usually provided in a long and short model. Deciding which nail length to use is highly discussed, and often a long nail is preferred, because it gives a theoretically more stable and secure fixation of the femur. There are, however many advantages of using a short nail. It is less time consuming as there is no need for reaming, securing the long nail distally requires more fluoroscopy time, and distal locking of the long nail has also been shown to increase the risk of perioperative fractures. Perioperative bleeding and postoperative blood transfusions are reduced when using a short nail, and a long nail may also give more pain distally around the thigh and around the knee owing to cortical impingement. Finally, the long nail is more expensive compared to short models. There is a perception in the orthopedic society that there's a higher risk of periprosthetic fractures with short nails, but the latest generations of nails have improved this problem. Most studies report no difference in periprostetic fractures between long and short nails. Recently, new extended-short versions of medullary nails are being produced. The extended-short nail combines the mechanical properties seen in a long nail and the surgical simplicity of a short nail. This new nail type may replace the use of several long nails being placed just to be on the safe side, and thus reduce operating time, bleeding and postoperative pain associated with a long nail. Biomechanical studies have showed that the mechanical properties of long and extended-short nails are predominantly comparable, but to our knowledge no clinical studies comparing the extended-short and long nails have been performed to date. The advantages of an extended-short nail are potentially great, which makes it important to clarify which opportunities there are to benefit from this type of nail for certain types of fractures, both in the interest of the patient as well as the economic healthcare perspective. Purpose In a well-defined population of patients with proximal femur fractures within a certain anatomical area the aim is to compare the extended-short nail with the long nail, to evaluate differences in functional and surgical outcome. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04652310
Study type Interventional
Source Vestre Viken Hospital Trust
Contact Heidi B Dyrop, MD, PHD
Phone +4799030104
Email heidyr@vestreviken.no
Status Recruiting
Phase N/A
Start date December 1, 2020
Completion date December 2025

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