scapholunate dissociation
Conditions
Interventions
4D-CT scan, comparison injured with contralateral non-injured wrist.
Sponsors
no additional sponsors were needed for this study. Funding was organized by the University Amsterdam Medical Centre
Eligibility
Inclusion criteria
Inclusion criteria: Inclusion criteria In order to be eligible to participate in this study, a subject must meet all of the following criteria: - Patients with a one-sided palmar and dorsal scapho-lunate ligament reconstruction after traumatic rupture with a maximum follow up of 5 years. - Patients are over the age of 16 years - Patients who are willing and able to give informed consent
Exclusion criteria
Exclusion criteria: Exclusion criteria A potential subject who meets any of the following criteria will be excluded from participation in this study: - Surgical history of the carpus - A history of trauma (treated with a cast or surgically) to the contralateral non-fractured wrist - Not able to understand the written informed consent - Pregnancy - (Peri-)lunar dislocation - Pain, to the degree that the patient is not able or willing to move the hand
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Primary study parameters/outcome of the study: The aim is to gain dynamic information (motion patterns) of the scaphoid relative to the lunate. 3- Dimensional movement is divided in six parameters. For comparison of the scaphoid relative to the lunate, twee mean parameters (rotation and translation) have to be calculated. For these experiments the apparent changes in position of the fragments with respect to each other are displayed as a rotation around a Helical Axis of Motion (HAM) and translations along the HAM. Our aim is to determine a standard deviation of motion of the scaphoid and lunate using a 95% confidence interval. | — |
Secondary
| Measure | Time frame |
|---|---|
| Secundary study parameters/outcome of the study (if applicable): For analysis of the wrist joint, every motion (HAM), 3 translations parameters and 3 rotation parameters of the carpal bones will be defined in relation to radial positioning. Comparison of the operated and contralateral wrist of every patient will be made. The expectation is that there is a significant change in dynamic of the carpal during motion of the wrist after combined scapholunate reconstruction. The hypothesis is that the volar reconstruction is not physiological. | — |
Contacts
Public ContactPaul Wilmer
UAMC Amsterdam
Outcome results
None listed