Radius, Fracture, Kinematics, 4D-CT scan, Fractuur, Kinematica
Conditions
Interventions
Both forearms of the subjects with and without posttraumatic forearm impairment are scanned with a 4D-CT scanning technique. A low dose 4-dimensional CT scan is made of the forearm in 10 seconds accor
Sponsors
Dr. S.D. Strackee Department of Plastic, Reconstructive and Hand Surgery, AMC
Eligibility
Inclusion criteria
Inclusion criteria: Subjects with posttraumatic forearm impairment: - Patients with a one-sided posttraumatic impairment of forearm pro- and/or supination - Patients are over the age of 16 years - Patients who are willing to give informed consent Subjects without posttraumatic forearm impairment: - Subjects are over the age of 16 years and - Subjects who are willing to give informed consent
Exclusion criteria
Exclusion criteria: Subjects with posttraumatic forearm impairment: - A history of trauma to both forearms and/or - Not able to understand or give informed consent and/or - Pregnancy Subjects without posttraumatic forearm impairment: - A history of trauma to one or both forearm(s) - Not able to understand or give informed consent - Pregnancy
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The aim is to quantify the free range of motion (rotation) of the radius relative to the ulna and the proximodistal translation in the distal radioulnar joint (DRUJ) during forearm rotation. Since the proximal radius rotates about the capitellum of the humerus, while the distal radius rotates around the tip of the ulna, radius motion can be expressed in terms of translation along and rotation about a Helical Axis of Motion (HAM). The HAM notation therefore reduces the standard motion parameters (3 translations and 3 rotations) to one rotation and one translation. We will compare the mean (µ) and standard deviation (δ) of the healthy versus the affected forearm rotation. The main endpoint is to study whether we can differentiate between osseous (impinged) versus non-osseous (non-impinged) motion patterns as origin of restricted forearm rotation. | — |
Secondary
| Measure | Time frame |
|---|---|
| Based on the patterns in inter-relational radioulnar motion pattern, the secondary aim is to develop a classification and assess the inter- and intra-observer reliability. Furthermore to acquire knowledge of physiological mechanics of the radioulnar joint and to assess symmetry in radioulnar joint motions between two healthy forearms on 4D CT scans. | — |
Contacts
Public ContactM.G.A. Roo, de
Department of Plastic, Reconstructive and Hand Surgery Suite G4-226, AMC
Outcome results
None listed