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Knee arthrosis has a high prevalence. Non-surgical treatment, such as exercise, is the first choice of treatment. However, most patients end up having a surgical procedure such as total knee arthroplasty. Following surgery with total knee replacement as much as 20% of patients report to not be satisfied with the results. It is noteworthy that this level of dissatisfaction has persisted over the last decades despite formidable progress in surgical methods and technology. Leg strength prior to surgery is associated with faster recovery post operatively, which may influence satisfaction. The investigators aim is to implement a period of strength training prior to surgery to evaluate if training prior to surgery may reduce the level of dissatisfaction post operatively.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Maximal strength training | Experimental | eight weeks of leg press strength training prior to knee surgery |
|
| Control | No Intervention | treatment as usual prior to knee surgery |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Maximal strength training | Behavioral | 3 sessions/ week. leg press at ~85% of one repetition maximum for 8 weeks |
|
| Measure | Description | Time Frame |
|---|---|---|
| Change in Leg press strength | The maximal weight that can be lifted once | Baseline, 1 week pre-surgery, 3week post-surgery, 12 months post-surgery. |
| Group differences in Patient satisfaction | Satisfied with the results of knee surgery: yes/no | Change from 3 week post-surgery, 12 months post-surgery. |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Voluntary activation | Force production of thigh muscle during contraction with superimposed electrical stimulation | Baseline, 1 week pre-surgery, 3week post-surgery. |
| Change in Self reported knee function |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Berg | Contact | +47 71 19 57 71 | olbe@himolde.no |
| Name | Affiliation | Role |
|---|---|---|
| Berg | Molde UC | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Molde University College | Recruiting | Molde | Møre og Romsdal | 6410 | Norway |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 41534474 | Derived | Izadi M, Toien T, Ohrn FD, Schnell Husby O, Kvitland Schnell Husby V, Bjorgen Winther S, Sherman R, Forsberg Brobakken M, Wang E, Berg OK. Effects of preoperative maximal strength training on muscle strength and function in total knee arthroplasty: A randomized controlled trial. Ann Phys Rehabil Med. 2026 Mar;69(2):102067. doi: 10.1016/j.rehab.2025.102067. Epub 2026 Jan 13. |
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| ID | Term |
|---|---|
| D020370 | Osteoarthritis, Knee |
| ID | Term |
|---|---|
| D010003 | Osteoarthritis |
| D001168 | Arthritis |
| D007592 | Joint Diseases |
| D009140 | Musculoskeletal Diseases |
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The Knee Injury and Osteoarthritis Outcome Score - Physical Function - Short Form
| Baseline, 1 week pre-surgery, 3week post-surgery, 12 months post-surgery. |
| Change in Walking speed | 10 meter walking test | Baseline, 1 week pre-surgery, 3week post-surgery, 12 months post-surgery. |
| Change in Chair rising ability | 30 second sit to stand test | Baseline, 1 week pre-surgery, 3week post-surgery, 12 months post-surgery. |
| Change in Balance | unipedal stance test, postural sway | Baseline, 1 week pre-surgery, 3week post-surgery, 12 months post-surgery. |
| D012216 |
| Rheumatic Diseases |