Osteoarthritis
Osteoarthritis is a musculoskeletal condition discussed in relation to pain and physical function, including in studies of the knee. Research in this area includes non-drug approaches such as Swimming and interventions such as Chondroitin Sulfate, Collagen, and Curcumin.
Explore Osteoarthritis in the context of the musculoskeletal category.
This list shows research findings, not treatments. Nothing here replaces medical care. If you have this condition, talk to a doctor.
What may help
What studies found for each option, best evidence first.
27 options:3 good evidence12 some evidence8 not enough evidence4 not tested in people
CardiopracticeGood evidence it helpsSize of effect: Not known
Good human studies found a benefit, and they mostly agree. This is about what studies measured, not a cure.
All 3 studies with a clear result found a benefit.
Pooled analyses reported improvements in pain, function, gait performance, and quality of life, with no clear safety differences observed. A separate pooled analysis of 5 RCTs found improvements in VO2max, 6MWD, pain, and disability, but described the effects as small and not clinically significant.
Open the Cardio pageStrength TrainingpracticeGood evidence it helpsSize of effect: Medium
Good human studies found a benefit, and they mostly agree. This is about what studies measured, not a cure.
All 10 studies with a clear result found a benefit.
Open the Strength Training pageSwimmingpracticeGood evidence it helpsSize of effect: Not known
Good human studies found a benefit, and they mostly agree. This is about what studies measured, not a cure.
All 6 studies with a clear result found a benefit.
A pooled analysis whose study designs were not recorded found pain reduction and improved physical function in an osteoarthritis subgroup. Another pooled analysis whose study designs were not recorded found aquatic exercise comparable to land-based exercise and better than no intervention for some outcomes.
Open the Swimming pageTai ChipracticeSome evidence it helpsSize of effect: Large
Some human studies found a benefit. More research could change this.
All 22 studies with a clear result found a benefit.
Pooled analyses of randomized trials in adults with osteoarthritis found improvements in pain, mobility, physical function and stiffness compared with non-exercise comparators. Findings in people with knee osteoarthritis also included improved scores on the WOMAC and SF-36 measures.
Open the Tai Chi pageCupping TherapypracticeSome evidence it helpsSize of effect: Not known
Some human studies found a benefit. More research could change this.
5 of 6 studies found a benefit; 1 found none.
Reviews reported lower VAS and WOMAC pain scores with cupping; individual randomized trials compared cupping with acupuncture. The findings describe pain outcomes rather than a broader change in osteoarthritis.
Open the Cupping Therapy pageCyclingpracticeSome evidence it helpsSize of effect: Not known
Some human studies found a benefit. More research could change this.
All 3 studies with a clear result found a benefit.
An RCT involving 221 people with hip osteoarthritis found greater improvement in activities of daily living with CHAIN than usual care, but the difference was below the predefined minimum clinically important difference. In a separate RCT involving 25 people with knee osteoarthritis, VR cycling increased enjoyment, engagement, and total work; symptom improvement was not a primary endpoint.
Open the Cycling pageHeating Pads / Warm CompressespracticeSome evidence it helpsSize of effect: Not known
Some human studies found a benefit. More research could change this.
All 5 studies with a clear result found a benefit.
A pooled analysis of randomized trials found that heat therapy reduced pain and improved grip strength in people with hand osteoarthritis at short-term follow-up. Evidence for knee osteoarthritis was more limited, with the review reporting a heat-specific finding for edema.
Open the Heating Pads / Warm Compresses pagePilatespracticeSome evidence it helpsSize of effect: Not known
Some human studies found a benefit. More research could change this.
All 6 studies with a clear result found a benefit.
A 2025 meta-analysis found reduced pain compared with no intervention and improved range of motion compared with conventional exercises, though evidence quality was low. Another 2025 meta-analysis of 8 randomized controlled trials found improvements in WOMAC total score versus blank control and pain versus health education, but no significant advantage over other exercises.
Open the Pilates page
May not suit people with this condition
Supplements and practices linked to problems for people with this condition.
Social DancingpracticeUnclear
With advanced joint degeneration, pain and limited range of motion may worsen with the repetitive weight-bearing and rotational movements of social dancing.
Open the Social Dancing pageTai ChipracticeUnclear
Painful joint loading during Tai Chi’s weight-bearing stances may worsen symptoms in advanced joint degeneration if the movements are not modified.
Open the Tai Chi page
The expert view shows every study, dose protocol and source.
What may help
Interventions recorded as helping with this condition27 listedHighest probability, strongest evidence
- →PracticesCardioCertaintyVery highSourceRCT
Pooled analyses reported improvements in pain, function, gait performance, and quality of life, with no clear safety differences observed. A separate pooled analysis of 5 RCTs found improvements in VO2max, 6MWD, pain, and disability, but described the effects as small and not clinically significant.
Who was studied
- People with a condition
Open CardioStudy result
Aerobic exercise versus control improved pain, function, gait performance, and quality of life with moderate or low certainty; adverse event risk ratios were non-significant and no clear safety differences were observed.
- →PracticesStrength TrainingCertaintyHighSourceMeta-analysisModerate effect
Pooled randomized trials found resistance training improved pain, mobility, walking capacity, knee extension strength, and physical function in people with Osteoarthritis. One analysis reported SMD 0.43-0.81 for early knee osteoarthritis; another found SMD −0.48 for pain, SMD 0.40 for strength, and SMD −0.56 for function in knee and hip osteoarthritis.
How big is the effect
Moderate effectA clear difference on average.
Who was studied
- People with a condition
- Osteoarthritis
Open Strength TrainingStudy result
Resistance training improved mobility, walking capacity, knee extension strength, pain and physical function in early knee osteoarthritis (SMD 0.43-0.81).
- →PracticesSwimmingCertaintyHighSourceMeta-analysis
A pooled analysis whose study designs were not recorded found pain reduction (SMD -0.36, P=0.002) and improved physical function (SMD 0.61, P=0.01) in an osteoarthritis subgroup. Another pooled analysis whose study designs were not recorded found aquatic exercise comparable to land-based exercise and better than no intervention for some outcomes.
Who was studied
- People with a condition
- Osteoarthritis
Open SwimmingStudy result
Subgroup analysis showed significant pain reduction (SMD -0.36, P=0.002) and physical function improvement (SMD 0.61, P=0.01) vs NE.
Medium probability(12)
- →PracticesTai ChiCertaintyMediumSourceMeta-analysisLarge effect
Pooled analyses of randomized trials in adults with osteoarthritis found improvements in pain, mobility, physical function and stiffness compared with non-exercise comparators. Findings in people with knee osteoarthritis also included improved scores on the WOMAC and SF-36 measures.
How big is the effect
Large effectA big difference on average. Check how strong the evidence is.
Who was studied
- Healthy people and patients
- Back Pain
- Fibromyalgia
- Osteoarthritis
- Parkinsons Disease
- Sarcopenia
Open Tai ChiStudy result
Pooled RCTs in adults with OA show improved pain, mobility, function and stiffness versus non-exercise comparators.
- →PracticesCupping TherapyCertaintyMediumSourceRCT
Reviews reported lower VAS and WOMAC pain scores with cupping; individual randomized trials compared cupping with acupuncture. The findings describe pain outcomes rather than a broader change in osteoarthritis.
Who was studied
- People with a condition
- Ankylosing Spondylitis
- Chronic Urticaria
- Gout
- Herpes Zoster
- Hypertension
- Migraine
- +6 more
Open Cupping TherapyStudy result
Individual RCTs showed cupping therapy improved VAS and WOMAC pain scores compared to acupuncture.
- →PracticesCyclingCertaintyMediumSourceRCT
An RCT involving 221 people with hip osteoarthritis found greater improvement in activities of daily living with CHAIN than usual care, but the difference was below the predefined minimum clinically important difference. In a separate RCT involving 25 people with knee osteoarthritis, VR cycling increased enjoyment, engagement, and total work; symptom improvement was not a primary endpoint.
Who was studied
- People with a condition
- Osteoarthritis
Open CyclingStudy result
Primary HOOS activities of daily living outcome improved more with CHAIN than usual care in people with hip osteoarthritis, although the difference was below the predefined minimum clinically important difference.
- →PracticesHeating Pads / Warm CompressesCertaintyMediumSourceRCT
A pooled analysis of randomized trials found that heat therapy reduced pain and improved grip strength in people with hand osteoarthritis at short-term follow-up. Evidence for knee osteoarthritis was more limited, with the review reporting a heat-specific finding for edema.
Who was studied
- People with a condition
- Osteoarthritis
Open Heating Pads / Warm CompressesStudy result
Pooled RCTs of heat therapy in patients with hand osteoarthritis showed pain reduction and grip strength improvement at short-term follow-up.
- →PracticesPilatesCertaintyMediumSourceRCT
A 2025 meta-analysis found reduced pain compared with no intervention and improved range of motion compared with conventional exercises, though evidence quality was low. Another 2025 meta-analysis of 8 randomized controlled trials found improvements in WOMAC total score versus blank control and pain versus health education, but no significant advantage over other exercises.
Who was studied
- People with a condition
- Osteoarthritis
Open PilatesStudy result
Meta-analysis of RCTs showing significant pain reduction vs no intervention and improved range of motion vs conventional exercises, though evidence quality low.
- →PracticesQigongCertaintyMediumSourceRCT
A review of randomized trials reported improvements in pain, stiffness, physical function, aerobic capacity, and knee extensor peak torque. A separate review reported benefits for quality of life and 6-minute walk test.
Who was studied
- Healthy people and patients
- Breast Cancer
- Burnout
- Cancer
- Cardiovascular Disease
- Cervical Pain
- Chronic Fatigue Syndrome
- +11 more
Open QigongStudy result
Improvements in pain, stiffness, physical function, aerobic capacity, knee extensor peak torque.
- →PracticesRed Light Therapy (Photobiomodulation)CertaintyMediumSourceRCT
A pooled analysis of randomized trials reported pain reduction with low-level laser therapy, particularly at 904-905 nm, although the evidence quality was low. Another pooled analysis reported pain reduction in all randomized knee trials (k = 27).
Who was studied
- People with a condition
- Alopecia Androgenetic
- Back Pain
- Carpal Tunnel
- Coronary Artery Disease
- Covid 19
- Endometriosis
- +12 more
Open Red Light Therapy (Photobiomodulation)Study result
Meta-analysis of 13 RCTs showing significant pain reduction with LLLT, particularly 904-905 nm, though evidence quality low.
- →PracticesSwedish (Classic) MassageCertaintyMediumSourceRCT
In older adults with symptomatic knee osteoarthritis, an RCT involving 75 people found improvements in pain, daily function, and knee flexion. Another RCT found improvements in pain and function after 60-minute weekly Swedish massage compared with usual care at 8 weeks.
Who was studied
- People with a condition
- Osteoarthritis
Open Swedish (Classic) MassageStudy result
RCT showing significant improvements in VAS pain, KOOS-ADL function, and knee flexion ROM vs. control in older adults with symptomatic KOA.
- →PracticesTENS / EMS TherapyCertaintyMediumSourceRCT
A meta-analysis of randomized trials for knee osteoarthritis found small, non-significant effects in its primary pooled analysis; benefits were reported against control or placebo and for sessions ≥40 min. Another meta-analysis found that an osteoarthritis diagnosis did not change TENS effects compared with placebo.
Who was studied
- People with a condition
- Osteoarthritis
Open TENS / EMS TherapyStudy result
32 samples with osteoarthritis included; pain diagnosis did not modify TENS effect vs placebo.
- →PracticesYogaCertaintyMediumSourceRCTModerate effect
Pooled analyses whose study designs were not recorded reported improvements in pain, stiffness, and physical function; one reported pain reduction (SMD −0.70; 95% CI −1.08, −0.32) and improved function (SMD −0.40; 95% CI −0.75, −0.04). Estimates vary across reviews, and one reported very high heterogeneity (I2=98%).
How big is the effect
Moderate effectA clear difference on average.
Who was studied
- People with a condition
- Anxiety Disorder
- Arthritis
- Back Pain
- Carpal Tunnel
- Chronic Fatigue Syndrome
- Chronic Pain
- +9 more
Open YogaStudy result
Meta-analysis of 8 RCTs showing significant improvements in pain, stiffness, and physical function.
- →PracticesHatha YogaCertaintyMediumSourceClinical
In a 2012 trial of 250 people with knee osteoarthritis, Hatha yoga improved knee-related outcomes compared with therapeutic exercises; a 2017 pilot trial also reported improved osteoarthritis symptoms compared with an active self-care education program.
Who was studied
- People with a condition
- Osteoarthritis
- Rheumatoid Arthritis
Open Hatha YogaStudy result
Trial enrolled patients with OA of the knee joints and reported improvement in knee-related outcomes with hatha yoga therapy compared with therapeutic exercises.
- →PracticesFoam RollingCertaintyMediumSourceClinical
One trial found reduced hip pain and improved physical function after 11-12 weeks of daily foam rolling. In a separate trial of 31 people with mild to moderate hip osteoarthritis, foam rolling reduced pain during walking and improved hip adduction range of motion compared with exercise.
Who was studied
- Healthy people and patients
- Osteoarthritis
Open Foam RollingStudy result
One RCT (Ikutomo et al.) showed reduced hip pain and improved physical function after 11-12 weeks of daily FR.
Low probability(12)
- →PracticesAcupunctureCertaintyLowSourceRCT
Findings conflict: one pooled analysis found a greater reduction in osteoarthritic pain (MD -3.34), while another found no statistically significant benefits over comparators for pain, function, or flexion in knee osteoarthritis. A separate analysis reported pain benefits versus oral medications, but evidence for adding acupuncture to medication was inconclusive.
Who was studied
- People with a condition
- Back Pain
- Migraine
- Osteoarthritis
Open AcupunctureStudy result
Osteoarthritic pain subgroup showed greater VAS reduction (MD -3.34, p<0.0001)
- →PracticesAnusara YogaCertaintyLowSourceRCT
A pooled analysis whose study designs were not recorded reported improvements in pain, stiffness, and physical function with Yoga. A separate pooled analysis of randomized trials reported benefits for people with knee osteoarthritis in pain, physical function, and biomechanical or impairment outcomes.
Who was studied
- People with a condition
- Osteoarthritis
Open Anusara YogaStudy result
Meta-analysis of 8 RCTs (756 patients) showing significant improvements in pain, stiffness, and physical function with Yoga.
- →PracticesMobility TrainingCertaintyLowSourceRCT
A meta-analysis of eight randomized trials in adults with knee Osteoarthritis (Kellgren-Lawrence grades II-III) found that PNF reduced pain and increased knee range of motion immediately after the intervention.
Who was studied
- People with a condition
- Osteoarthritis
Open Mobility TrainingStudy result
Eight RCTs of adults with knee osteoarthritis (Kellgren-Lawrence grades II-III) in which PNF reduced pain and increased knee AROM versus control at immediate post-intervention.
- →PracticesBrisk WalkingCertaintyLowSourceClinical
A 2025 randomized controlled trial in 28 women aged 65+ with knee osteoarthritis found improved dynamic balance after 8 weeks of walking exercise with water inertial load; pain showed a positive trend toward reduction.
Who was studied
- People with a condition
- Osteoarthritis
Open Brisk WalkingStudy result
Significant improvement in dynamic balance (YBT composite) and positive trend in pain reduction in women aged 65+ with KOA after 8 weeks of walking exercise with water inertial load.
- →PracticesMeditationCertaintyLowSourceClinical
WOMAC symptom severity reported as significantly improved with mindfulness in adults with physician-confirmed KOA, per the abstract (p-value truncated).
Open MeditationWho was studied
- People with a condition
- Osteoarthritis
- →PracticesIndoor RowingCertaintyLowSourceClinical
In a randomized controlled trial involving 38 older adults with mild knee osteoarthritis, the rowing-related program improved WOMAC scores, muscle strength, and functional reach compared with conventional exercise.
Who was studied
- People with a condition
- Osteoarthritis
Open Indoor RowingStudy result
RCT showing significant improvements in WOMAC, muscle strength, and functional reach compared to conventional exercise in older adults with mild knee OA.
- →PracticesThai MassageCertaintyLowSourceClinical
A 2014 randomized trial in 60 people found improvements in pain, stiffness, and function from baseline, with efficacy comparable to ibuprofen.
Who was studied
- People with a condition
- Osteoarthritis
Open Thai MassageStudy result
Randomized controlled trial showing significant improvement in pain, stiffness, and function compared to baseline, with comparable efficacy to ibuprofen.
- →PracticesFastingCertaintyLowSourceReview
A 2025 review of animal and preliminary clinical evidence suggested that intermittent fasting may improve pain, physical function and joint structure in osteoarthritis.
Who was studied
- People with a condition
Open FastingStudy result
Narrative review of preclinical (animal) and preliminary clinical evidence suggesting IF improves pain, function, and joint structure in OA
- →PracticesHot YogaCertaintyLowSourceTheoretical
Low-impact movement in a warm environment may improve joint mobility and reduce stiffness in knee and spinal osteoarthritis when adapted appropriately.
Open Hot YogaStudy result
Low-impact movement in warm environment may improve joint mobility and reduce stiffness in knee and spinal osteoarthritis when adapted appropriately.
- →PracticesCalisthenicsCertaintyLowSourceTheoretical
Strengthening exercise adapted for osteoarthritis is used in management to improve function and symptoms.
Open CalisthenicsStudy result
Adapted strengthening exercise is used as part of osteoarthritis management to improve function and symptoms.
- →PracticesHot BathCertaintyLowSourceTheoretical
Warm-water immersion is described as reducing joint stiffness and pain in osteoarthritis through increased tissue extensibility and activation of endogenous opioid systems.
Open Hot BathStudy result
Warm water immersion effectively reduces joint stiffness and pain in osteoarthritis by increasing tissue extensibility and activating endogenous opioid systems.
- →PracticesMassageCertaintyLowSourceTheoretical
Regular massage may reduce pain and stiffness in knee osteoarthritis; the supporting trials were small to moderate in size.
Open MassageStudy result
Regular massage may reduce pain and stiffness in knee osteoarthritis in small to moderate trials.
What to avoid
Interventions recorded as making it worse2 listedHighest probability
- →PracticesTai ChiCertaintyLowSourceReference knowledge
Painful joint loading during Tai Chi’s weight-bearing stances may worsen symptoms in advanced joint degeneration if the movements are not modified.
Open Tai ChiRationale
Painful joint loading during weight-bearing stances may exacerbate symptoms in advanced joint degeneration without modification.
How to read the evidence
Evidence tier — overall strength of the evidence for the whole compound
- StrongWell established — backed by strong, consistent human research.
- ModerateSome genuine support, but mostly from small or lower-quality studies. Promising, not proven.
- PreliminaryEarly-stage evidence — a promising hypothesis, not an established effect yet.
- LimitedVery limited evidence — treat this as a hypothesis, not proof.
- InsufficientNot enough good evidence to draw conclusions yet.
Certainty — how sure we can be that the effect is real
- Very highVery sure — strong, consistent evidence
- HighFairly sure — consistent evidence from good studies
- MediumModerately sure — new studies could change this
- LowNot sure — little or mixed evidence
- Very lowVery unsure — almost no usable evidence
Source — where the data comes from
- Meta-analysisPooled analysis of many trials — the strongest evidence
- RCTRandomized controlled trial — a strong human study design
- ClinicalA human clinical study
- Reference knowledgeFrom general health-science or pharmacology references, not a study of this exact claim
- Animal researchStudied in animals, not humans
- Community reportsAggregated user reports — anecdotal signal, not evidence
- TheoreticalMechanism-based reasoning, not yet tested
Study grade — quality of each underlying study (A best, D weakest)
- AHigh-quality — strong, consistent human trials
- BGood — solid evidence with some limitations
- CModerate — limited, small, or mixed-quality studies
- DWeak — preliminary, indirect, or animal-only
Confidence — how strongly the sources back a finding
A 0–100 score from study quality and agreement
Most supplement evidence is graded C–D. Read it as preliminary signal, not proof.
Full write-up
What is it
Osteoarthritis is a musculoskeletal condition discussed in relation to pain and physical function, including in studies of the knee. Research in this area includes non-drug approaches such as Swimming and interventions such as Chondroitin Sulfate, Collagen, and Curcumin. These options are evaluated mainly for outcomes such as pain relief and changes in physical function.
Evidence-backed options
The options associated with osteoarthritis do not represent one uniform treatment approach. Research covers aquatic and land-based exercise, yoga, oral supplements, and intra-articular treatment, with outcomes mainly focused on pain, stiffness, physical function, and joint-related measures. Swimming was comparable to land-based exercise and superior to no intervention for some outcomes, while yoga research reported improvements in pain, stiffness, and physical function. One pilot RCT found that 8-week Hatha yoga improved pain and stiffness compared with a wait-list control, with improvements in some measures continuing through 20 weeks.
The supplement studies also used different preparations and schedules. One trial of garlic involved 80 postmenopausal overweight or obese women taking a 500 mg garlic tablet 2 times daily for 12 weeks and reported reduced pain severity. Krill Oil was studied at 4 g/d, with modest improvements in knee pain, stiffness, and physical function compared with placebo. L-Carnitine was studied at 750 mg/day for 8 weeks in female patients with knee osteoarthritis. These durations provide context for when outcomes were assessed, but they do not establish a common onset time across options.
The evidence is more limited for several other options. Some findings come from a single clinical study, a review, or animal research rather than a broader body of human trials. L-Theanine, in particular, has evidence from animal research, so its findings do not directly establish effects in people with osteoarthritis. Glucosamine showed improvement in pain scores but did not show a clinically relevant effect on slowing joint space narrowing. Clinical decisions about osteoarthritis options should take the type and limits of the evidence into account and be discussed with a clinician.
What to avoid
Tai Chi may require caution in osteoarthritis when joint degeneration is advanced and accompanied by instability or severe pain. In these circumstances, participation in weight-bearing movements may not be safe or feasible without changes to the activity. Modification, or temporary avoidance until the condition is stabilized, may therefore be appropriate to consider.
Whether Tai Chi can be performed safely depends on the severity and stability of the joint condition rather than on the activity alone. A clinician can help assess whether modifications are suitable for an individual’s osteoarthritis.