Patellofemoral Dislocation Clinical Trial
Official title:
Assessment of Patellar Stability in Patients Who Underwent Reconstruction of the Medium Patello-femoral Ligament With Fascia Lata Allograft: Comparison Between Conventional CT and Under Weight-bearing CT
Verified date | May 2024 |
Source | Istituto Ortopedico Rizzoli |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
The objective of the present study is to compare the stability and alignment of the patella in patients with previous recurrent dislocation treated with medial patellar femoral ligament reconstruction with fascia lata allograft, 5 years after surgery by conventional CT and by CT under weight-bearing. Conventional CT will be performed with the patient supine, the knee fully extended and with the muscles of the thigh and leg completely relaxed. On the same day, the patient will undergo a CT scan of the knee under weight-bearing with the Cone Beam Computed Tomography (CBCT) scanner system. The CT images will be viewed through the PACS system by two independently expert radiologists who will measure the tilt, congruence angles and the TT-TG with the methodical notes described in the literature. The use of a CT under weight-bearing allows for the first time to evaluate in a realistic way the stability and tracking of the patella, with the knee flexed and therefore with the activation of the quadriceps muscle.
Status | Completed |
Enrollment | 20 |
Est. completion date | February 26, 2020 |
Est. primary completion date | May 26, 2019 |
Accepts healthy volunteers | No |
Gender | All |
Age group | N/A and older |
Eligibility | Inclusion Criteria: - Who is able to provide informed consent and who agrees to sign the Informed Consent Form approved by the Ethics Committee (EC). - Subject who underwent reconstruction of the MPFL using a minimally invasive technique using a fascia fascia allograft, performed at the Rizzoli Orthopedic Institute between 2012 and 2013 by the team of Prof. Zaffagnini. Exclusion Criteria: - patients with severe morphostructural deformities or other pathologies affecting the knee and lower limb - patients with serious systemic vascular and neurological pathologies - patients unable to perform a CT scan under weight-bearing - State of pregnancy. - Obese or with body mass index BMI> 30 kg / m2. - Association of Trocleoplasty (intervention that produces degenerative changes of the joint in high percentage) |
Country | Name | City | State |
---|---|---|---|
Italy | IRCCS Istituto Ortopedico Rizzoli | Bologna |
Lead Sponsor | Collaborator |
---|---|
Istituto Ortopedico Rizzoli |
Italy,
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* Note: There are 21 references in all — Click here to view all references
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Patellar Tilt Angle | The tilt angle is defined as the angle subtended by a line joining the medial and lateral edges of the patella and the horizontal plane on the axial plane, measured both by conventional CT scan with the knee extended and by CT scan under weight bearing conditions with the knee flexed at 30°. | 24 months | |
Primary | Patellar Congruence Angle | Angle made by a line parallel to the posterior condyles and the line joining the edges of the patella on the axial plane, measured under weight-bearing with knee flexed at 30° and supine with knee extended. | 24 months | |
Primary | Tibial tuberosity-trochlear groove distance | Radiographic parameter measured by CT scan both under weight-bearing with knee flexed at 30° and supine with knee extended. | 24 months |
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