Biomechanical consequences of a combined palmar and dorsal scapholunate ligament reconstruction: an evaluation using 4D CT.

Completed

Conditions: rupture of the ligament between the boatshaped and the moonshaped carpal bone
Scapholunate ligament injury
10043237

Registration Number: NL-OMON52123

Lead Sponsor: Academisch Medisch Centrum

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Completed

Sex: Not specified

Target Recruitment: 10

Inclusion Criteria

Patients who underwent one-sided palmar and dorsal reconstruction of the SL
ligament after traumatic rupture with a maximum follow up of 5 years
Patients who are over the age of 16 years
Patients who are willing and able to give informed consent

Exclusion Criteria

Surgical history of the carpus.
A history of trauma (treated with a cast or surgically) tot the contralateral
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

Study & Design

Study Type: Observational invasive

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
<p>The aim is to gain dynamic information (motion patterns) of the scaphoid<br /><br>relative to the lunate. 3- Dimensional movement is divided in six parameters.<br /><br>For comparison of the scaphoid relative to the lunate, twee mean parameters<br /><br>(rotation and translation) have to be calculated. For these experiments the<br /><br>apparent changes in position of the fragments with respect to each other are<br /><br>displayed as a rotation<br /><br>around a Helical Axis of Motion (HAM) and translations along the HAM. Our aim<br /><br>is to determine a standard deviation of motion of the scaphoid and lunate using<br /><br>a 95% confidence interval. </p><br>

Secondary Outcome Measures

Name	Time	Method
<p>For analysis of the wrist joint, every motion (HAM), 3 translations parameters<br /><br>and 3 rotation parameters of the carpal bones will be defined in relation to<br /><br>radial positioning. Comparison of the operated and contralateral wrist of every<br /><br>patient will be made. The expectation is that there is a significant change in<br /><br>dynamic of the carpal during motion of the wrist after combined scapholunate<br /><br>reconstruction. The hypothesis is that the volar reconstruction is not<br /><br>physiological. </p><br>