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The study was conducted to investigate the effect of genicular nerve block on pain, quality of life, and proprioception, which are already diminished due to the impact of osteoarthritis in individuals with knee osteoarthritis.
Does genicular nerve block reduce pain and improve the quality of life in patients with knee osteoarthritis? Does genicular nerve block affect proprioception in patients with knee osteoarthritis?
Osteoarthritis (OA) is described as a degenerative joint disease characterized by cartilage erosion, osteophytes, subchondral sclerosis, and changes in the joint capsule, commonly observed in the elderly. Knee osteoarthritis is identified as the most prevalent form, with an increasing prevalence attributed to aging. It is recognized as a leading cause of disability, resulting in reduced quality of life and increased healthcare costs. Major risk factors include age, genetics, obesity, and muscle weakness. Current treatments focus on symptom management, with options including medication, physical therapy, and surgery.
Genicular nerve block is a minimally invasive procedure used to manage knee osteoarthritis pain by administering local anesthetics and corticosteroids near specific genicular nerves under ultrasound guidance. Temporary pain relief for up to three months has been reported, and the procedure is considered well-tolerated.
Proprioception is defined as the sense of joint and limb position, mediated by receptors located in muscles, tendons, and joints. Assessment can be performed through simple methods, such as evaluating the ability to recognize specific joint angles or positions during passive or active movement. Proprioceptive deficits are frequently observed in osteoarthritis, and a better understanding of these changes is suggested to guide treatment strategies.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Genicular Nerve Block Group | Experimental | A nerve block will be performed on 22 patients using lidocaine injection under ultrasound guidance. After obtaining informed consent, the procedure will be carried out following sterilization, with 2% lidocaine hydrochloride injected at a total volume of 6 mL, distributed as 2 mL for each of the superomedial, superolateral, and inferomedial branches of the genicular nerve. After the injection, bleeding control will be performed, and the procedure will be concluded. All ultrasound-guided injections will be performed by a single physician, and the examination, investigations, treatment, and clinical evaluations of the patients will be conducted by the physicians participating in the study. |
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| Exercise group | Active Comparator | Exercise group: A home exercise program will be provided, including isometric strengthening exercises for the quadriceps muscles and stretching exercises for the hamstring muscles. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| genicular nerve block | Other | genicular nerve block |
| |
| Measure | Description | Time Frame |
|---|---|---|
| Proprioception | Proprioception will be assessed using joint position sense. Joint position sense will be measured as the ability to actively replicate a joint position previously taught passively, referred to as Active Joint Position Sense (AJPS) (28). AJPS will be tested using a Continuous Passive Motion (CPM) device. The knee will be passively moved from 90° flexion toward extension at a slow pace. During this movement, the knee will be paused at 60°, 45°, and 30° flexion for 10 seconds each, and these angles will be taught to the participants. The knee will then be returned to 90° flexion, and the participants will be asked to actively replicate the taught angles. Participants will actively move their knees from the starting position to the taught angles of 60°, 45°, and 30° flexion to identify these positions. The actual taught angles and the angles determined by the participants will be recorded, and the differences between them will be calculated. Each angle will be tested in three trials, and | Pre-treatment, 2 weeks, 1 month |
| Measure | Description | Time Frame |
|---|---|---|
| The Nottingham Health Profile (NHP) | The Nottingham Health Profile (NHP) will be used to assess quality of life. The NHP is a general quality of life questionnaire that measures perceived health problems and their impact on normal daily activities. The questionnaire consists of 38 items and evaluates six dimensions of health status: energy (3 items), pain (8 items), emotional reactions (9 items), sleep (5 items), social isolation (5 items), and physical activity (8 items). Responses are given as "yes" or "no," and each section is scored on a scale from 0 to 100. A score of "0" indicates the best health status, while a score of "100" represents the worst health status. |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Ankara Bilkent City Hospital | Ankara | Çankaya | 06800 | Turkey (Türkiye) |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 15639634 | Background | Tuzun EH, Eker L, Aytar A, Daskapan A, Bayramoglu M. Acceptability, reliability, validity and responsiveness of the Turkish version of WOMAC osteoarthritis index. Osteoarthritis Cartilage. 2005 Jan;13(1):28-33. doi: 10.1016/j.joca.2004.10.010. | |
| 10589640 | Background | Myles PS, Troedel S, Boquest M, Reeves M. The pain visual analog scale: is it linear or nonlinear? Anesth Analg. 1999 Dec;89(6):1517-20. doi: 10.1097/00000539-199912000-00038. |
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| ID | Term |
|---|---|
| D010003 | Osteoarthritis |
| ID | Term |
|---|---|
| D001168 | Arthritis |
| D007592 | Joint Diseases |
| D009140 | Musculoskeletal Diseases |
| D012216 | Rheumatic Diseases |
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| ID | Term |
|---|---|
| D015444 | Exercise |
| ID | Term |
|---|---|
| D009043 | Motor Activity |
| D009068 | Movement |
| D009142 | Musculoskeletal Physiological Phenomena |
| D055687 | Musculoskeletal and Neural Physiological Phenomena |
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| Exercise |
| Other |
isometric exercise |
|
| Pre-treatment, 2 weeks, 1 month |
| Western Ontario and McMaster Universities Arthritis Index (WOMAC) | Pain, joint stiffness, and functional status will be assessed using the Western Ontario and McMaster Universities Arthritis Index (WOMAC). The WOMAC consists of 24 questions in total, divided into three subscales: pain (5 questions), joint stiffness (2 questions), and functional status (17 questions). Each question is scored on a scale from 1 to 5, with higher scores indicating poorer health and lower scores indicating better health. | Pre-treatment, 2 weeks, 1 month |
| Visual Analog Scale (VAS) | Pain intensity will be assessed using the Visual Analog Scale (VAS) for evaluating current pain. Participants will be asked to rate their pain at rest, during movement, and at night. The scale ranges from 0 (no pain) to 10 (worst imaginable pain). | Pre-treatment, 2 weeks, 1 month |
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