In Vivo Kinematics of Scapolunate Interosseous Ligament Injuries

Study Overview
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Brief Summary
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The investigators hypothesize that there is no relationship between in vivo kinematic abnormalities and patient-rated outcomes for scapholunate interosseous ligament injuries (SLIL) The secondary null hypotheses are that: There are no kinematic differences between subjects with unilateral, symptomatic, full thickness scapholunate ligament tears in comparison to the contralateral wrist without scapholunate ligament injury. The investigators aim to answer to the below questions: What are baseline validated outcomes for subjects with SLIL injury? What are baseline physical measures (range of motion, Jamar Dynamometry)?

Detailed Description
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In vivo kinematics of the normal wrist has been studied previously, but few studies have characterized the wrist with a SLIL injury. There are few studies evaluating validated patient-rated outcomes for patients with SLIL injury. The goal of this study would be to evaluate to what degree kinematic abnormalities affect patient-rated outcomes.

Official Title
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In Vivo Kinematics of Scapolunate Interosseous Ligament Injuries

Conditions
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Scapholunate Ligament Tear

Intervention / Treatment
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* Device: CT scan
* Device: Fluoroscopy Scan


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All patients with a unilateral full thickness scapholunate ligament tear diagnosed by radiographs or advanced imaging Exclusion Criteria: Patients with a partial thickness scapholunate ligament tear Patients with radiographic arthrosis Patients with prior wrist injury Pregnant women

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Health Services Research
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Scapholunate tear<br>Subjects with a full scapholunate tear will have a CT scan and fluoroscopy images taken | Device: CT scan<br>* A CT scan of the wrist<br>Device: Fluoroscopy Scan<br>* A fluoroscopy scan of the wrist.<br>|
| Active Comparator: Control Wrist<br>Subjects will have a CT scan and fluoroscopy image taken of the contralateral wrist serve as the control. | Device: CT scan<br>* A CT scan of the wrist<br>Device: Fluoroscopy Scan<br>* A fluoroscopy scan of the wrist.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Patient Rated Wrist Evaluation (PRWE) | The questionnaire will help the investigators determine how much difficulty the subject has had with the injured wrist in the past week. | at enrollment | 
| SF-12 Patient Questionnaire | The SF-12 questionnaire will help the investigators determine how well subjects are able to do usual activities | at enrollment | 
| DASH Questionnaire | The DASH questionnaire will help the investigators determine the level of disability subjects face from the wrist injury. | at enrollment |