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This study aims to evaluate the long-term clinical outcomes of arthroscopic trochleoplasty in patients treated for chronic recurrent patellar dislocations. The primary objective is to assess the effectiveness of the procedure in reducing the need for re-operations and preventing recurrent instability. Secondary objectives include evaluating postoperative complications, patellofemoral pain, functional outcomes using the Kujala Anterior Knee Pain Scale (AKPS), and quality of life measured by EQ-5D-5L. This retrospective cohort study will analyze data from patient records and structured telephone interviews conducted at least one year post-surgery.
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| Measure | Description | Time Frame |
|---|---|---|
| Re-operation Rate | Proportion of patients requiring additional surgical interventions after the index surgery at our institution. | The investigators seek to register any re-operations from the time between the index surgery and the interview, ranging from 1 year up to 7 years postoperatively. |
| Measure | Description | Time Frame |
|---|---|---|
| Recurrent Instability Rate | Incidence of recurrent patellar dislocations post-surgery. | The investigators seek to register any incidences of recurrent instability from the time between the index surgery and the interview, ranging from 1 year up to 7 years postoperatively. |
| Postoperative Complications |
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This retrospective cohort study evaluates the long-term outcomes of arthroscopic trochleoplasty performed to stabilize the patella in patients with chronic recurrent dislocations. The procedure involves deepening the trochlea femoris to enhance patellar tracking and prevent lateral dislocation. In some cases, medial patellofemoral ligament (MPFL) reconstruction was also performed. Data will be collected through patient medical records and structured telephone interviews, focusing on re-operation rates, postoperative complications, pain levels, functional outcomes, and quality of life. The study seeks to provide insights into the effectiveness and safety of this surgical technique, aiming to optimize treatment protocols for patellar instability.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Vestre Viken HF | Drammen | 3004 | Norway |
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| ID | Term |
|---|---|
| D031222 | Patellar Dislocation |
| ID | Term |
|---|---|
| D004204 | Joint Dislocations |
| D007592 | Joint Diseases |
| D009140 | Musculoskeletal Diseases |
| D014947 | Wounds and Injuries |
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Frequency and type of complications following trochleoplasty. |
| The investigators seek to register any complications related to the index surgery from the time between the index surgery and the interview, ranging from 1 year up to 7 years postoperatively. |
| Functional Outcome | Kujala Anterior Knee Pain Scale (AKPS) scores assessing pain and knee function. The Kujala Score or Anterior Knee Pain Scale (AKPS) is a 13-item self-report questionnaire that assesses subjective reactions to particular activities and symptoms that are known to correlate with anterior knee pain syndrome. The AKPS is graded on a scale of 0 to 100, with 100 being the highest possible score. Lower scores reflect greater pain and disability. | At the time of the interview, which will be performed from 1 year up to 7 years postoperatively. |
| EQ-5D-5L (HRQoL) scores | EQ-5D-5L (HRQoL) scores evaluating general health and well-being. The descriptive system comprises five dimensions: mobility, self-care, usual activities, pain/discomfort and anxiety/depression. Each dimension has 5 levels: no problems, slight problems, moderate problems, severe problems and extreme problems. The patient is asked to indicate his/her health state by ticking the box next to the most appropriate statement in each of the five dimensions. This decision results in a 1-digit number that expresses the level selected for that dimension. The digits for the five dimensions can be combined into a 5-digit number that describes the patient's health state. | At the time of the follow-up interview, which will be performed from 1 year up to 7 years postoperatively. |
| Pain Assessment | Numeric pain rating scale (NRS), ranging from the least pain, 0, to the worst pain imaginable, 10, during daily activities. | At the time of the follow-up interview, which will be performed from 1 year up to 7 years postoperatively. |
| Patient Satisfaction | Satisfaction score on a scale, ranging from 1 (very dissatisfied) to 5 (very satisfied). | At the time of the follow-up interview, which will be performed from 1 year up to 7 years postoperatively. |
| D007718 |
| Knee Injuries |
| D007869 | Leg Injuries |