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| Name | Class |
|---|---|
| Søernes Privathospital | OTHER |
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This study looks at two different types of tendon (tissue) used in knee surgery to repair a torn anterior cruciate ligament (ACL), which is a common injury in active people. The two types are taken from different muscles in the thigh: one from the front (quadriceps) and one from the back (semitendinosus). We will use information already collected in a national health registry to see how patients recover after surgery. The study will compare knee function, activity level, and how often patients need another operation.
This is a retrospective observational cohort study based on data from the Danish Knee Ligament Reconstruction Registry (DKRR). The study includes patients who underwent primary ACL reconstruction using either a quadriceps tendon graft (with or without a bone block) or a quadrupled semitendinosus tendon graft. The primary outcome measures are the Knee Injury and Osteoarthritis Outcome Score (KOOS) and the Tegner Activity Scale. Secondary outcomes include reoperation rates, postoperative complications, and patient satisfaction. All available demographic, operative, and patient-reported outcome data will be analyzed. Multivariable regression will be used to adjust for confounders such as age, sex, BMI, time from injury to surgery, and surgeon volume. The study is exempt from ethical approval under Danish law, and data will be handled in compliance with GDPR.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Quadriceps tendon graft | Patients who underwent primary ACL reconstruction using a quadriceps tendon autograft, with or without a bone block. Data are derived retrospectively from the Danish Knee Ligament Reconstruction Registry (DKRR). | ||
| Semitendinosus graft | Patients who underwent primary ACL reconstruction using a quadrupled semitendinosus tendon autograft. Data are derived retrospectively from the Danish Knee Ligament Reconstruction Registry (DKRR). |
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| Measure | Description | Time Frame |
|---|---|---|
| The Knee Injury and Osteoarthritis Outcome Score (KOOS) | The Knee Injury and Osteoarthritis Outcome Score (KOOS) evaluates pain, symptoms, daily living, sport/recreation, and knee-related quality of life. Metric type: continuous PROM-based subscale score Method of measurement: Self reported questionnaire | At minimum 1 year follow up postoperatively |
| Tegner Activity Score | Assesses patients' level of physical activity before injury and at follow-up. Metric type: Scale from 0-10, where 0 is no physical activity caused by knee problems and 10 is an ability to compete in elite level sport like soccer and ski. Method of measurement: Tegner scale, self reported | Minimum 1 year follow up postoperatively. |
| Measure | Description | Time Frame |
|---|---|---|
| Re-operation rate | Incidence of surgical re-intervention after primary ACL reconstruction. Method of measurement: Registry recorded re-operations in DKRR | Within 1 year of surgery |
| Postoperative complications |
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Inclusion Criteria:
Exclusion Criteria:
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Patients registered in the Danish Knee Ligament Reconstruction Registry (DKRR) who underwent primary anterior cruciate ligament reconstruction using either a quadriceps tendon graft or a semitendinosus tendon graft. All included patients have completed at least one year of follow-up and patient-reported outcome measures. The population consists of physically active individuals aged 15 to 50 years.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Abdirahman Omar H Medical Students | Contact | + 45 27 59 97 29 | Namharidba2@gmail.com | |
| Mikkel Attrup L MD, Orthopedic Surgeon | Contact | Mikkel@attrup.dk |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Søernes Privathospital | Copenhagen | Frederiksberg | 1900 | Denmark |
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Frequency of postoperative complications such as infection, stiffness, or graft failure.
Metric type: Occurrence of postoperative complications Method of measurement: Clinically reported and registry documented complications in DKRR
| Within 1 year after surgery |
| Patient satisfaction | Overall patient satisfaction with surgical outcome, if available in registry. Metric type: PROM's available from the DKRR Method of measurement: Patient reported satisfaction score. | 1 year follow up |
| ID | Term |
|---|---|
| D000070598 | Anterior Cruciate Ligament Injuries |
| D007718 | Knee Injuries |
| D001265 | Athletic Injuries |
| ID | Term |
|---|---|
| D007869 | Leg Injuries |
| D014947 | Wounds and Injuries |
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