Patella, Familial Recurrent Dislocation Of
Conditions
Brief summary
The purpose of this study is to determine whether medial patellofemoral ligament reconstruction results in superior functional outcomes compared to medial retinacular plication surgery in cases of recurrent patellar instability.
Detailed description
Patients with recurrent lateral patellar instability will be assigned to undergo one of two surgical approaches aimed to prevent recurrent patellar instability and result in improvement in function. One surgical approach will be medial retinacular plication with multiple stitches while the other surgical approach will include medial patellofemoral ligament reconstruction using a hamstring tendon graft. Prior to surgery, and then during follow-up after surgery as well as at the completion of minimum two years follow-up after surgery, patients will be asked to complete subjective functional questionaires that will rate their knee function, and to undergo detailed physical examination and objective functional tests that will quantify the success of surgery. The outcomes of the surgical treatment options will be compared to determine whether medial patellofemoral ligament reconstruction results in superior function and patient subjective satisfaction compared to medial retinacular plication only.
Interventions
PROCEDURESurgical treatment for recurrent patellar instability
Either medial plication or MPFL reconstructuion surgery
Sponsors
Rambam Health Care Campus
Hadassah Medical Organization
Assaf-Harofeh Medical Center
Soroka University Medical Center
Meir Medical Center
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
15 Years to 35 Years
Healthy volunteers
No
Inclusion criteria
* Recurrent lateral patellar instability has been described by the patient Imaging criteria include: * TT-TG distance (on CT or MRI) is between 10-20 mm * Insall-Salvati Index is between 0.9 - 1.2 * Trochlea angle is lower than 145 degrees
Exclusion criteria
* Only a single event of lateral patellar instability occured Imaging criteria include: * TT-TG distance (on CT or MRI) is below 10 mm or above 20 mm * Insall-Salvati Index is below 0.9 or above 1.2 * Trochlea angle is above 145 degrees * Other concomitant intra-articular patholgies, injuries, and surgeries, besides the patella instability, with were recorded at the lower limbs and did not uneventfuly healed, and as a result cause dysfunction of the lower limbs * Significant ligamentous injuries of the knees, including cruciate and collateral injuries, as well as meniscal injuries that interfere with function
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Kujala knee outcome score | Between two and five years after surgery | A validated international outcome score that evaluates knee functional outcome in relation to patellofemoral symptoms |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Tenger activity level score | Between two and five years after surgery | A validated international outcome score that evaluates highest level of sports activity |
| Marx activity level score | Between two and five years after surgery | A validated international outcome score that evaluates highest level of sports activity |
| Visual Analogue Scale | Between two and five years after surgery | A validated international scale that evaluates level of pain |
| International Knee Documentation Committee subjective outcome score | Between two and five years after surgery | A validated international outcome score that evaluates general knee functional outcome |
| Side-to-side hop test | Between two and five years after surgery | Evaluates limb asymmetry index between operated and nonoperated limbs performing side to side repetaed hops during 30 seconds |
| Patellar apprehension test | Between two and five years after surgery | Evaluates normal patellar tracking and patient's feeling of subjective comfort while the examiner apply a provocative force that translates the patella lateraly |
| Infectious event of the operated knee documented by number of events that required antibiotics treatment with or without joint lavage | Immediately after surgery, for the duration of hospital stay, and until expected time of 1 month | Infection of the surgical site as a severe complication of surgery, requirng antibiotics with or without joint lavage |
| Single hop test | Between two and five years after surgery | Evaluates limb asymmetry index between operated and nonoperated limbs during a single legged hop for distance |
Countries
Israel
Contacts
Primary ContactIFTACH HETSRONI, M.D.
Backup ContactDROR LINDNER, M.D.
Outcome results
None listed