M17
Conditions
Interventions
Group 1: Application of a femoral nerve block in the groin (NFB) with Naropin 0.25% 40 ml
Group 2: Application of a femoral nerve block in the groin (NFB) with Naropin 0.25% 40 ml and head-down positi
Sponsors
Katholisches Klinikum Bochum, Martin-Luther Krankenhaus
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: • All patients undergoing primary bicondylar total knee arthroplasty (TKA) at the Martin Luther Hospital Bochum-Wattenscheid, part of the Catholic Hospital Bochum, between 2025 and 2026. • Anesthesia: General anesthesia • Age 18 or older • ASA I-III • Patient consent
Exclusion criteria
Exclusion criteria: • Younger than 18 years • Anesthesia procedure: Spinal anesthesia • Pregnancy • Joint infection, such as periprosthetic joint infection (PJI) and history of PJI • ASA IV • Allergies to local anesthetics • Infection of the puncture site • Failure to sign a consent form and patient refusal • Dementia or inability to cooperate • Language barrier • Alcohol dependence
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| • Cumulative amount of additional opioid analgesics administered up to the first postoperative day | — |
Secondary
| Measure | Time frame |
|---|---|
| • Time to first opioid in minutes • Pain intensity: Change in NRS pain score on the day of surgery (0-10) • Pain intensity: Change in NRS pain score on the first postoperative day (0-10) • Degree of quadriceps weakness after the block on the blocked and operated side, muscle strength assessment (Manual Muscle Test = MMT) • Time the patient first got out of bed • Duration of first getting out of bed • Time the patient first walked with a walking aid under the guidance of a rehabilitation physician and physiotherapist | — |
Countries
Germany
Contacts
Public ContactAlexander Andres, MHBA
Katholisches Klinikum Bochum, Martin-Luther Krankenhaus
Outcome results
None listed