The primary aim of this study is to examine the effect of Oxandrolone supplementation after lower extremity high energy fracture on muscle volume recovery. As Oxandrolone supplementation has never been examined in this patient population, the primary null hypothesis is that there will be no difference in measured thigh muscle mass volume between Oxandrolone supplementation and placebo administration groups.
Lower extremity fractures associated with high-energy mechanisms of injury (combat injuries including blast or crush injuries, motor vehicle accidents, fall from significant height, gunshot injuries) are unfortunately common among active service members and civilians presenting to level-1 trauma centers worldwide. High-energy fractures have several unique characteristics that distinguish them from low-energy injuries. They typically occur in predominately younger, male patients (30-65 years old)1 and involve significant soft-tissue stripping or damage. These patients require at least one major reconstructive surgery, with the majority requiring multiple reconstructive surgeries, each associated with additional soft tissue injury and subsequent prolonged immobilization to facilitate limb stabilization. Despite extended rehabilitation focused on neuromuscular retraining and muscular development, the result is often permanent limitations of ambulation and medical retirement from active duty due to volumetric muscle loss. So, while advances in orthopedic approaches to fracture care have lowered complications such as non-union and malunion, rendering them less significant as limitations to restoring function soft-tissue complications now predominate. Oxandrolone has been successfully utilized to accelerate muscular recovery, reduce muscle loss, and improve function in several populations including healthy elderly patients with frailty/sarcopenia, patients with large surface area burns, neuromuscular diseases, HIV, congenital heart disease and genetic diseases including Klinefelter's and Turner's Syndromes. In addition, Oxandrolone has also been safely used in pediatric patients to treat constitutionally delayed growth. Given the similarities in patient populations and the known limitations of volumetric muscle loss in military personnel and civilians after major trauma, Oxandrolone supplementation may reduce initial volumetric muscle loss and improve long-term muscle mass and function.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Oxandrolone is a synthetic anabolic androgenic steroid that induces its responses by binding to androgen receptors which modulates gene expression to increase protein synthesis and efficient utilisation of amino acids. Oxandrolone was first synthesized in 1962 through 17alpha-alkylation of testosterone resulting in a formal composition of (4bS,7S,9aS,9bR,11aS)-tetradecahydro-7-hydroxy-4aS,6aS,7-trimethyl- cyclopentanaphthopyran-2(1H)-one and molecular formula of C19H30O3.
As there is currently no approved medication to aid in soft-tissue regeneration, we will be using a placebo control.
Delta volumetric vastus medialis diameter on MRI
MRI is taken to assess the vastus medialis muscle mass.
Time frame: upto 6 months
Delta volumetric thigh muscle mass on MRI
Delta volumetric thigh muscle mass on MRI at 52 week Post treatment and the VMO (Vastus Medialis) at 26 week visit.
Time frame: Up to 1 year
Functional measure: 6-minute walk test
Time frame: Up to 1 year
Activity count by ActiGraph GT3X-BT
The actigraph measures sleep efficiency.
Time frame: Up to 1 year
Short Form 36 Health Survey
The minimum score is 0, and maximum score is 5.
Time frame: Up to 1 year
Patient-Reported Outcomes Measurement Information System (PROMIS)
The minimum score is 0, and maximum score is 10.
Time frame: Up to 1 year
Standard AP and Lateral X-Rays
Time to radiographic union of fracture in weeks based on bridging callous of 3 of 4 cortices on standard AP and lateral x-rays
Time frame: Through study completion, an average of 1 year
Length of in-patient Acute Hospital stay, and Rehabilitation stay
Length of in-patient Acute Hospital stay, and Rehabilitation stay to be determined by the orthopedic surgeon.
Time frame: Through study completion, an average of 1 year
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MARX Scale
The minimum score is 0, and maximum score is 10.
Time frame: Up to 1 year
VAS Score
The minimum score is 0, and maximum score is 10.
Time frame: Up to 1 year
Hand-Held Dynamometer
The hand-held dynamometer is a small device that fits in the examiner's hand and is placed at precise locations on a subject's limb in an effort to assess the force generated by various muscles or groups of muscles.The minimum score is 0, and maximum score is 10.
Time frame: Up to 1 year