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Clinical Trial Summary

The goal of the project is to describe novel factors affecting outcome after elbow fracture surgery with an in-depth evaluation of the role played by neuro inflammation from concomitant peripheral nerve injury or head injury in elbow fracture outcomes. Among all upper limb fractures, elbow trauma is the most frequently associated with a severe impact on patient function and quality of life. One of the main reasons for poor outcomes is the complexity of the elbow joint, which involves three bones and two planes of motion, essential to position the hand in space. The flexion extension axis is crucial for eating and hygiene, while forearm pro-supination is mandatory for most professions, from office work to manual labour.


Clinical Trial Description

Elbow fractures are a challenging clinical problem. The advancement of science and technology has made major contributions to improve outcomes. Nonetheless, even with an anatomical restoration of the bone architecture, many patients stay with major limitations and pain. In clinical practice, it is striking to see how two patients with a similar elbow injury can exhibit completely opposite presentations: one who has completely healed from his/her injury and the other who has a stiff and painful elbow. The reasons for these changeable outcomes are unclear. The investigator hypothesize that many of the answers will be related to the neurological system. This would explain why most studies strictly focusing on the orthopedic component of upper limb injury have yielded little improvement in preventing the adverse outcomes experienced by patients. Following surgical treatment of an elbow fracture, patients often present with complications. Indeed, one third of patients complain of ulnar nerve symptoms after distal humerus fracture fixation, and 50% of patients treated surgically for elbow fracture-dislocations will have disabling stiffness and heterotopic ossification (HO). HO results from resident cells of mesenchymal origin in soft tissues transforming into bone. Furthermore, approximately half of all patients with fractures feel significant pain leading to persistent narcotic intake 3 months post injury; 40% will suffer from a neuropathic type of pain, which is poorly controlled by narcotic medication. Opioid usage is also related to increased sensitivity to pain (hyperalgesia) and dissatisfaction. Complications from opioids prolonged usage are numerous, from constipation to death due to an overdose. Canada is second worldwide, behind the United States, when it comes to opioid use and mortality secondary to opioid use. The majority of opioid dependant users were first exposed to these substances through medical prescriptions. This makes it imperative to improve the scinetific community understanding of pain mechanisms and find alternative treatments to opiates in the management of these injuries. In view of these observations, the investigator's research must focus on something other than "satisfactory radiological results" in patients with elbow injuries. To this end, a multidisciplinary approach is needed. The investigators oversee research in elbow trauma, neurotrauma and have an expertise in upper limb evaluation. To improve the understanding of the underlying physiological principles that contribute to pain and chronic stiffness, one of the topics targeted by the investigator is the role of neuro-inflammation (NI) in chronic pain and functional limitation in elbow trauma. The surgical factors that increase NI will allow surgeons to choose different therapeutic options and develop novel treatments. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05075382
Study type Observational
Source Université de Montréal
Contact
Status Withdrawn
Phase
Start date July 1, 2022
Completion date December 31, 2025

See also
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