Ankle Injuries Clinical Trial
Official title:
MRI Appearance of Injured Ligament and Tendon of the Ankle in Different Postures: Study Protocol for a Single-center, Diagnostic Clinical Trial
To compare the results of multi-position MRI scans for ankle ligaments and tendons to clarify how to obtain imaging data of different ankle ligaments and define severity of injuries to calculate the rate of correct diagnosis, thereby developing a reasonable surgical treatment in clinical practice.
The ankle joint is an important part of the human lower limb. It has the function of
maintaining the normal standing of the human body, supporting and bearing the body weight
and conducting movements. As one of the complex joints of the human body, its surrounding
ligaments and tendons not only play an important protective effect on it, but also play a
fixed role in the movement of the ankle to effectively prevent excessive ankle varus/valgus.
Ankle fractures account for approximately 3.9% of total body fractures, ranking the first in
intra-articular fractures. An ankle injury is often accompanied by intra-articular fractures
and surrounding ligament rupture. With the increasing requirements for joint functions and
clinical surgery, inappropriate treatment for ankle ligament injury can result in limited
movement function of the ankle, and even lead to traumatic arthritis and chronic ankle
instability.
X-ray examinations are routinely preferred for the diagnosis of ankle injury, which can make
an accurate diagnosis of ankle dislocation and fracture. However, X-ray plain film has a low
resolution for tendon and ligament lesions, which is easy to result in missed diagnosis of
mild fractures, bone contusion and occult fractures, and moreover, it is difficult to fully
clear the location, type and degree of ankle injury.
MRI has high definition and resolution to implement a multi-parameter multi-directional
scanning. Its histopathological findings can accurately and objectively display ankle and
surrounding ligament injuries and their severity. MRI is able to display the anatomic
structure and severity of ligament injury of the ankle on three anatomic planes: transverse,
sagittal and coronal. Sagittal MRI is a good helper for diagnosis of Achilles tendon lesion,
which can clearly show the talus, posterior tibial tendon, talocalcaneal joint, Achilles
tendon, subtalar joint, articulatio talonavicularis, tibiotalar joint, and the cartilage and
joint cavities. Coronal MRI can clearly show structures of the peroneal joint, tibiotalar
joint, and lateral malleolus, especially the articular surface between the tibia, fibula and
the ankle bone as well as between the ligament fibula and the ankle bone; and meanwhile, it
can display the posterior tibial ligament, posterior talofibular ligament and posterior
tibial tendon. Transverse MRI well shows the tibiofibular ligament, and anterior talofibular
ligament. The ankle ligament mainly consists of three parts: the lateral collateral
ligament, medial collateral ligament and tibiofibular ligament. Activities of the ankle
refer to flexion and extension along the sagittal plane, including plantar flexion and
dorsiflexion, to play a role of supporting and bearing, movement conduction and function as
a lever.
Adverse events If expected or unexpected adverse events (such as headache and nausea) during
the MRI detection, the date of occurrence, type of injury and therapeutic managements will
be recorded. Severe adverse events, including a requirement for immediate surgery, damage to
patient's work ability, life-threatening events or death will be reported to the project
manager and the institution review board within 24 hours.
Data collection, management, analysis and open access All data will be collected on a case
report form, recorded electronically and saved in a dedicated computer. Continuous variables
from each record will be collected for descriptive statistical analysis, to allow real-time
review and identify any potential deviation.
The validity of the data will be assessed by the censor once every 6 months through a random
sampling of 10% of the database. Only the researchers participating in the study will have
the right to query the database that will not be modified.
Statistical analysis will be completed by professional statisticians who will responsible
for a statistical report. The statistical results will be given to the project manager, who
will be responsible for writing the research report.
Anonymized trial data will be released at www.figshare.com.
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