Strengthening exercises
Strength Training for Arthritis: Rebuilding Thigh Strength
From the legs up to the wall squats, we're going to look at posture and knee response first rather than size of movement.
See the action and description.COLUMNS · EXERCISE · INTERVIEWS
Understanding your knee,
caring for it over time.
Exercise shown in photographs, conditions and surgical choices,
AI-robot research that started in clinics.
The knee movement
Explanation of the movement as seen in the photo
Explore strengthening, stretching and exercises for the iliotibial band.
We're going to look at the posture and how knee reacts.
Stretching.
How to Stretch a Stiff Knee
The pups, the hips, and the eels move slowly to locate their positions.
See the action and description.
Iliotibial band
Outer Knee Pain: Is the Iliotibial Band Involved?
Three iliotibial-band stretches, adjustment of exercise load and the role of hip muscle strength.
See the action and description.RUNNING
Running and knee health: distance and recovery
Explore exercise volume through arthritis research and recent studies of running injuries.
Does Running Bring on Knee Osteoarthritis Sooner?
We distinguish the knees of runners from running with a painful knee.
How Much Farther Can I Run Than Last Week?
We need to look at not only the weekly total, but also the distance travelled at a time.
Disease and Treatment
A description of what we share in the clinic
From arthritis to ligament and meniscus injuries.
These are the questions we need to understand the results of the tests and choose treatment.
What is my osteoarthritis grade? KL grades and what comes next
How to read X-ray grades 0–4, why knees with the same grade can progress differently, and what our OAI and MOST research has explored.
How does the meniscus distribute load? Understanding hoop stress
Circumferential fibers and root attachments work together to distribute load. The direction of a tear matters.
A Knee That Gave Way Needs a Ligament Assessment—even if You Can Walk
It's different with a slow swelling and a stable knee. These are questions to look at in the anterior cruciate ligament damage.
A Suddenly Hot, Swollen Knee Needs Attention
It's different from the rapidly changing symptoms of pain. It explains the cause of infection, and so forth.
Why Balance Both Bone and Ligaments in Knee Replacement?
surgery is not just about putting metal in it. They check stability together when bending and unfolding.
When the Kneecap Feels as Though It Might Slip: Patellar Instability
Anterior knee pain and patellar dislocation need to be distinguished. Assessment includes bone shape and ligaments as well as strength.
Does Every Meniscal Tear Need to Be Removed?
Symptoms and the shape of tear are more important than what you'd expect from an MRI. It explains why cartilage is preserved.
Knee MRI: Connect the Findings with Your Symptoms
Distinguishing cartilage, meniscus and ligament injuries, and checking whether the findings explain the patient’s symptoms.
Pain and Altered Sensation after Knee Replacement: When to Reassess
We need to distinguish between a decrease in sensitivity around the scar and a newly formed loss of strength. And look at the changes in knee, which I liked.
Wear in One Compartment: Osteotomy or Partial Knee Replacement?
The purpose of surgery may be different, even if it looks sick. I see the remaining joints and legs aligned together.
Posterior and Side Ligaments: Different Injuries, Different Roles
posterior cruciate ligament and collateral ligament have different roles and recovery plans. We need to make sure they're hurt together.
What to Discuss Before Knee Replacement
Timing and expected benefits of surgery are considered alongside pain, daily limitations and response to previous treatment.
Before Comparing Medicines, Injections, and Surgery
Take what I want to do again as the starting point for my treatment choices.
Why Keep Exercising with Arthritis?
Using the knee less is different from using it well.
Knee Osteoarthritis: Start with Daily Life, Not Just the X-ray
With the arthritis step, you have to look at walking, sleeping and working.
Preparing for Recovery after Knee Replacement
From preoperative tests and anesthesia to walking the next day, rehabilitation, wound care and follow-up about one month after surgery.
Body Weight and Knee Pain
Weight management is part of the knee burden reduction therapy. Muscles and lifestyle.
Research and technology
What a doctor thinks about AI robots.
arthritis research, the surgery robot and physical AI,
Turning questions from clinical care into technology at CONNECTEVE.
What to Decide before Using AI in Research
How to reduce work and leave judgments.
What to Read beyond the Arthritis Grade
A video biomarker and AI story shared in an OARSI lecture.
How should you read the knee measurements shown by AI?
The treatment story begins with understanding the arthritis rating and leg angles.
Why a Practicing Doctor Builds Technology
I study recurring problems in clinical care and develop tools for patients and clinicians.
What does Physical AI need to learn for use in the operating room?
We are extending research from AI that reads images to AI that understands tissue position and force and controls movement.
What Does It Mean That AI Reads X-rays Better?
You have to be able to grow well, and you have to decide how to treat it.
What a Robot Does in Knee Replacement
I'm looking at making a plan, putting it into practice exactly, and seeing the patient recover well.
The story we shared outside.
Articles, Interviews & Videos
Articles I wrote are listed separately from interviews and reports written by journalists.
You can move to the original text and video from each item.
Seoul General Hospital official channel
Seoul National University Hospital is the official channel. I looked at the hospital's subscription link to see where it came from.
View the original article or videoCONNECTEVE official channel
It's a company channel connected to the official product website of CONNECTEVE. I'm introducing Q&A and patient education content.
View the original article or videoIf you want to use knee for a long time, things that need to be checked right away.
It's a lecture by Professor Du Hyun Ro on Seoul Hospital TV. I checked the title and host on the hospital's official page.
View the original article or video[Doctor Q&A] What are the stages of my knee?
This is the arthritis rating description video from CONNECTEVE's official KOA product page.
View the original article or video[Doctor Q&A] Why is rehabilitation exercise needed after knee replacement?
A postoperative rehabilitation video linked from CONNECTEVE’s official page. Exercise timing and permitted range depend on the operation and recovery stage.
View the original article or videoSports team doctor · Cruciate-ligament tear
This is a anterior cruciate ligament description video from an article produced by Seoul National University Hospital, where Professor Du Hyun Ro-kimjiguang and the corresponding video link were verified.
View the original article or videoDu Hyun Ro CONNECTEVE representative for X-ray reading AI development... the dream of a medical Apple.
The Korea Economic Daily · 2022-08-28 · Reporter Kim Jong-woo. An early interview tracing how repetitive clinical measurements and patient explanations led to medical AI research and entrepreneurship. Direct access was restricted, so the introduction uses information visible in search results.
View the original article or videoThe AI robot will be more accurate and secure.
The Medical · 2023-08-28 · Medical journalist Kim Gong-pil. An interview on why an orthopedic surgeon began developing surgical robots and the research direction at that time. Future operating-room scenes represent a development vision. Direct access was restricted, so this introduction uses information visible in search results.
View the original article or videoIf you're sick in front of knee, the fluorescent gas... to keep your movement from becoming toxic.
Yonhap News · 2022-08-13 · Reporter Kim Jan-di. Guidance on adjusting exercise to the cause of knee pain and managing strength and weight. The exercise restrictions in the headline are not applied uniformly to every patient.
View the original article or videoorthopedic surgery integrated solutions that innovate with AI and robots
IBK Industrial Bank of Korea CEO REPORT · September 2025 · Editorial team An article about CONNECTEVE, a company supported by the IBK Changgong startup program, and CEO Du Hyun Ro. It describes efforts to connect medical image analysis with surgical robotics.
View the original article or videoThe AI automatically measures how far the rib cage is tilted backwards.
Yonhap News · 2025-08-26 · Reporter Kim Jan-di. A report on Professor Ro’s team’s automated measurement of posterior tibial slope, explaining how anatomical landmarks are identified on knee images to calculate the angle.
View the original article or videoThe X-ray is a single... AI can read arthritis status in 10 seconds.
Newsis · 2026-02-07 · Reporter Ryu Nan-young. A report on explaining treatment to patients using arthritis and leg-alignment analyses. It can be read with a focus on what measurements mean and how patients understand them.
View the original article or videoA medical AI-powered dark horse equipped with all of the imaging equipment and surgery robots.
Edaily · 2026-02-12 · Reporter Shin Min-jun. An interview on why musculoskeletal AI and surgical robots are being developed together, and the clinical questions behind that work.
View the original article or video[Report] How far has AI that treats patients come? Physical AI at KIMES 2026
Dementia News · 2026-03-23 · Reporter Hwang Gyo-jin. A KIMES lecture report explaining why operating-room cooperation, visibility and force control are difficult problems for Physical AI, and the challenges of clinical use.
View the original article or videoWhat's the future for AI...CONNECTEVE, the integrated management of endoscopic therapy?
Medical Times · 2026-03-27 · Reporter Kim Seung-jik. A field report on research and development connecting imaging data, foundation models, surgical planning and assistive robots.
View the original article or videoFrom AI diagnostics to surgery... CONNECTEVE, surgery assistant humanoid ZETTY first release
Digital Chosun Ilbo · 2026-03-27 · Reporter Kim Jeong-a. Coverage of ORCA surgical-robot and Zett assistive-humanoid prototype demonstrations, clinical-data connections and the clinical validation still needed.
View the original article or videoCONNECTEVE, described as the “Apple of orthopedics”: CEO Du Hyun Ro on growth through integrated diagnostic software and surgical robots
Pharm Edaily · 2026-04-01 · Reporter Kim Seung-kwon. An interview on CONNECTEVE’s development direction linking outpatient imaging and clinical information with surgical planning. Performance, revenue and launch schedules should be read separately from goals stated at the interview.
View the original article or videoCONNECTEVE, physical AI surgery position... NRL.
Medical Times · 2026-07-14 · Reporter Kim Seung-jik. A report on research collaboration to build surgical-video, robot-motion and tactile data together and participate in medical Physical AI demonstrations.
View the original article or videoThe proper exercise pads that continue to be effective keep the knee healthy.
Hankyoreh · 2025-08-07 · Professor Du Hyun Ro, Orthopedic Surgery, SNUH. An authored column on knee pain and exercise, distinguishing anterior knee pain from OA and explaining exercise adapted to the individual.
View the original article or video[Knee rehabilitation, week 1] Supine straight-leg raise with ankle dorsiflexion
It's a video of the patient training program on Seoul University Hospital TV. You can slowly track the movement. The title refurbishment parking is not applied to all arthritis patients' schedules, but the range and amount of exercise are adjusted according to the type of surgery and current joint condition.
View the original article or video[Knee rehabilitation, week 1] Seated knee extension
It's a video of the patient training program on Seoul University Hospital TV. You can slowly track the movement. The title refurbishment parking is not applied to all arthritis patients' schedules, but the range and amount of exercise are adjusted according to the type of surgery and current joint condition.
View the original article or video[Knee rehabilitation, weeks 2–4] Supine hamstring stretch
It's a video of the patient training program on Seoul University Hospital TV. You can slowly track the movement. The title refurbishment parking is not applied to all arthritis patients' schedules, but the range and amount of exercise are adjusted according to the type of surgery and current joint condition.
View the original article or videoDigital Healthcare Evolves into AI Robotics
An interview with Du Hyun Ro in the summer 2023 issue of SNUH VOM. It describes how the difficulties of repeated measurement and clinical-data analysis led to AI research and entrepreneurship, and his vision at the time for surgical planning and robotics.
View the original article or videoIf you want to use knee for a long time, things that need to be checked right away.
The SNUH FOCUS lecture page confirms Du Hyun Ro as the speaker and describes a video about age-appropriate exercise and posture, knee pain, and treatment.
View the original article or videoKnee-straining Postures Even Professional Golfers Watch Out For—and How to Improve Them
An SNUH Talk Talk video featuring Du Hyun Ro and professional golfer Choi Ye-ji. The official introduction describes knee rotation during the golf swing, thigh muscles and pain, and healthier golf posture.
View the original article or videoWalking Remains Important for People with Osteoarthritis
A health interview with Du Hyun Ro in the Korea Economic Daily. It discusses regular exercise, muscle strength and weight management, activities that place high loads on the knee, treatment decisions that consider quality of life, and symptoms that warrant medical assessment.
View the original article or video[Opinion] Sustainable Surgery Depends on Technology
An Electronic Times opinion article by Du Hyun Ro, Associate Professor of Orthopedic Surgery at SNUH and CEO of CONNECTEVE. It argues for preparing AI, physical-assistance technologies, and systems based on surgical data as the population ages and the surgical workforce changes.
View the original article or videoOrthopedic Surgery and Artificial Intelligence: The Future Has Already Begun
A review by Du Hyun Ro, Choi Byeong-seon, and Han Hyuk-soo in the Journal of the Korean Orthopaedic Association, volume 60, issue 4, pages 223–232. It reviews AI applications in disease classification, imaging analysis, and patient-specific prognosis in orthopedic surgery.
View the original article or videoAI Research Identifies Differences in Osteoarthritis Risk by Knee Alignment
An SNUH press release about AI-based knee-radiograph and alignment research by Du Hyun Ro’s team. It describes the relationship between constitutional alignment and osteoarthritis severity, a comparison of Korean and UAE cohorts, and a separate hip-fracture AI study.
View the original article or videoAI Measures the Narrowest Joint Space in Knee Osteoarthritis
Research by Du Hyun Ro at SNUH and Lee Do-won at Dongguk University Ilsan Hospital. It introduces orthogonal minimum joint-space width (oJSW), which automatically searches for narrow joint spaces on radiographs, and findings on tracking structural change.
View the original article or videoA Candidate Marker for Accelerated Knee Osteoarthritis Progression
Research by Du Hyun Ro’s team using longitudinal radiographs to examine the association between knee-alignment progression and the joint-line convergence angle (JLCA). It discusses the characteristics of knees whose alignment changes rapidly and the potential for prediction.
View the original article or video