Orthopedic Surgeon Explains Joint Pain, Arthritis, MRI Tears & When Surgery Is Needed | Howard Luks

Episode Overview

• Host Simon Hill (nutritionist, physiotherapist, and Scientific Advisory Board member for sponsor IM8 Health; episode also sponsored by Eight Sleep, Function Health, and Momentous) interviews Dr. Howard Luks, an orthopedic sports medicine surgeon with 30 years of clinical experience and author of Longevity Simplified, on how to distinguish normal age-related joint wear from conditions requiring surgery.
• The discussion explores systemic biases in orthopedic medicine—including residency training that underexposes young doctors to non-surgical recoveries, Relative Value Unit (RVU) financial incentives, and over-aggressive AI tools—while reviewing sham surgery and physical therapy trials for meniscus, rotator cuff, and labral tears.
• Luks details the critical link between metabolic health and musculoskeletal pain, explaining how elevated A1C, systemic inflammation, high cholesterol, and high uric acid directly infiltrate tendons and impair tissue healing.
• The episode provides an evidence-based evaluation of regenerative medicine (cortisone, hyaluronic acid, PRP, stem cells, and peptides like BPC-157/TB-500), explains why standard RICE protocols (ice and NSAIDs) impair acute injury healing, and emphasizes power and plyometric training to prevent life-altering falls in older age.

Key Concepts

• Surgical Biases and Sham Surgery Evidence: Orthopedic residents spend minimal time in the clinic, meaning they rarely see the roughly 100 meniscus tears that resolve without surgery for every one they operate on. Combined with productivity-based contracts using Relative Value Units (RVUs) that reward surgery financially, younger surgeons often operate on MRI reports rather than clinical reality, whereas older surgeons operate less. Controlled trials comparing surgery to physical therapy or sham surgery (anesthesia and two skin incisions without repair) show no surgical advantage for many meniscus tears, tennis elbow, rotator cuff tears, labral tears, and bone spurs. During the 2008 financial collapse and COVID-19 operating room shutdowns, many patients placed in physical therapy while awaiting knee surgery recovered so well they canceled their operations entirely.
• When Surgery Is Genuinely Required: Specific mechanical failures still demand surgery. A posterior medial meniscus root tear—where the meniscus detaches from one of its two attachment points—requires surgical repair to prevent rapid knee deterioration, stress reactions, and stress fractures. For anterior cruciate ligament (ACL) tears, children and adolescents require reconstruction (with patellar bone-tendon-bone grafts backed by 15 years of MOON Group data as the gold standard, while quadriceps or hamstring grafts are used for revisions or open growth plates, and synthetic grafts like Gore-Tex fail over time) to prevent secondary meniscus and cartilage damage that accelerates osteoarthritis. Most adults manage ACL tears well non-surgically, unless the knee buckles or subluxates in their 50s and 60s. For acute traumatic rotator cuff ruptures (e.g., falling off a ladder), Luks notes there are no clear studies proving surgery beats conservative care, though surgeons operate because waiting 2 to 3 months risks irreversible tendon changes.
• Metabolic Health and Tendon/Joint Biology: Most adult joint or tendon pain stems from a lack of maintenance, movement, and mechanical strain rather than acute injury. While Luks notes we do not know if age-related versus lifestyle-induced changes look different on an MRI, metabolic health dictates how much those changes hurt and how well tissues heal after surgery. A runner with moderate arthritis, an A1C of 5.2, and a C-reactive protein (CRP) of 0 may resolve a flare-up in weeks, whereas a diabetic patient with an identical X-ray, an A1C of 7.2, abdominal obesity, and a sed rate of 2 often develops chronic pain. In severe tendinopathy, disorganized collagen fibers contain spaces filled with inflammatory uric acid crystals and cholesterol crystals in patients with elevated levels of those markers.
• Age-Appropriate MRI Findings and the Nocebo of Language: Almost everyone over age 40 to 45 has labral tearing and identifiable rotator cuff pathology (fraying or tendinopathy), and by the 5th, 6th, and 7th decades, full-thickness tendon tears are the norm. Most meniscus tears never physically heal, yet the pain typically resolves in 2 to 3 months. Alarmist clinical terms like "tear" (which implies trauma rather than gradual wear like a 20-year-old pair of jeans) and "bone on bone" (instead of "severe grade 4 arthritis") scare patients into abandoning weight-bearing exercise. While Luks does not claim to be a pain expert, he observes that reassuring patients their tear is stable immediately lowers their self-reported pain scores. Furthermore, AI tools used by patients at least twice a week misinterpret pain locations and terrify them into thinking they have cancer, and AI tends to be overly aggressive in recommending surgery.
• Shoulder Mechanics, the Rotator Cable, and Biceps Tendinopathy: In adults with shoulder pain, clinicians should look to the rotator cuff first rather than common SLAP (labral) lesions, which are rarely operated on. The rotator cuff comprises four small muscles deep to the deltoid that center the shoulder. A suspension-bridge-like structure called the "rotator cable" runs from the front of the supraspinatus to the infraspinatus in the back, unloading the supraspinatus attachment. Referencing Dan Lieberman's work on evolutionary energy conservation, Luks explains that this unloaded tendon tissue thins and detaches without trauma; however, as long as the rotator cable is intact, the shoulder remains 100% functionally intact (even in professional pitchers throwing 100 mph with full-thickness tears). Furthermore, surgically repaired 2 cm atraumatic rotator cuff tears often look intact on ultrasound at 6 weeks and 3 months (Luks notes he is not the best with ultrasound, but good enough to see if a cuff is intact) yet re-tear by 2 years because surgery does not fix the underlying degenerative biology. Conversely, when the biceps tendon swells inside its bony groove, performing a biceps tenodesis (moving the anchor down) relieves friction without impairing shoulder function because the frayed tendon was no longer functioning normally.
• Tendinopathy vs. Tendinitis: Tendinitis is acute inflammation from sudden unaccustomed activity, whereas tendinopathy is structural disorganization from aging or overuse (such as ramping up running from 1 mile on day one, to 3 miles on day two, to 5 miles on day three, which causes an olive-shaped Achilles swelling lasting a year). Because the degenerated center of a tendon cannot be normalized, physical therapy works by applying strain to build up the remaining healthy outer tendon tissue.
• Osteoarthritis, Knee vs. Hip Replacements, and Injections: Knee osteoarthritis (seen 5 times an hour in Luks's clinic) shows up on X-rays as decreased joint space, bone sclerosis, effusion, bone spurs, and flattened femoral condyles, while MRI reveals cartilage structure and bone or synovium inflammation. Unlike hip replacements (a ball-and-socket joint with rapid recovery), total knee replacements (a hinge joint) require a large central incision, bone resurfacing, cemented components with a plastic spacer, and navigating reactive tissues and quadriceps binding. For non-surgical management, hyaluronic acid helps mild-to-moderate "spicy" arthritis before major life events. Cortisone is useful for acutely swollen osteoarthritic knees or sub-gout high uric acid, and in the shoulder when injected under ultrasound guidance into the subacromial space on top of tendons, but never into tendons and never every 3 to 4 months due to tissue degradation.
• Regenerative Medicine, Cartilage Scaffolding, and Peptides: Platelet-Rich Plasma (PRP) releases growth factors for mild-to-moderate arthritis and intratendinous shoulder injections, requiring a sweet spot of roughly 18 billion platelets; cheap systems drawing 10 to 15 cc of blood and spinning once for 4 minutes produce ineffective results. Stem cells offer no major advantage over PRP despite costing up to $10,000 at clinics making unfounded regrowth claims. State-of-the-art cartilage regeneration (which Luks researched 30 years ago) can only fill a small focal "pothole" using a membrane and cells; in widespread osteoarthritis, all the scaffolding is gone, and human applications of promising mouse research remain 15 to 20 years away. Regarding peptides like BPC-157 and TB-500, Luks opposes their use due to the complete lack of long-term human data and unknown risks such as blood clots or accelerating cancer.
• Extra-Articular vs. Intra-Articular Healing and the Flaw of RICE: Extra-articular ligaments like the ankle's CFL/ATFL bleed when torn, forming a clot that releases growth factors and attracts macrophages to lay down new fibers (reaching functional strength in roughly 8 weeks, though Luks notes he cannot give a hard number on exact pre-injury return). In contrast, the intra-articular ACL cannot heal itself because synovial fluid enzymes dissolve blood clots to prevent joint-freezing scar tissue, washing away the healing scaffold. For acute sprains, the traditional RICE protocol is counterproductive: acute inflammation is necessary to summon healing cells, NSAIDs block this cascade, and ice damages superficial veins and capillaries—increasing permeability and rebound swelling while risking 3rd-degree burns. Similarly, post-exercise ice baths reduce next-day soreness (useful for Tour de France riders) but blunt long-term biological training adaptations.
• Power Loss and the Downward Spiral of Aging Falls: While pure strength declines very little with age, humans lose massive amounts of power, quickness, and balance. Older adults fall not simply because they trip, but because they lack the rapid foot or arm speed to catch themselves, causing them to hit their face or nose on the ground. A resulting fracture and 2-to-3-week hospital stay strips away 20% of baseline function, frequently initiating an irreversible decline involving secondary falls, pneumonia, cane dependency, and loss of independence.

Quotes

• At 0:03:05 - "You don't see the hundred or so meniscus tears before them that didn't need an operation. So a lot of young surgeons tend to come out thinking from an MRI report perspective: this is torn, it can't be normal, it must need an operation." - Explaining how surgical residency training creates a bias toward operating on MRI findings.
• At 0:07:06 - "Most joint pain or tendon pain in grown adults is not due to an injury, right? You didn't sleep wrong, you didn't, you know, that milk wasn't too heavy coming out of the fridge. Our tendons and joint structures were engineered in such a way that if you don't maintain them and exercise them, move them, run them, strain them, they are going to let you down." - Clarifying that adult musculoskeletal pain usually stems from underuse rather than acute trauma.
• At 0:12:14 - "Surgical procedures pay more than treating someone without surgery, right? Most surgeons are on a productivity-based contract based on Relative Value Units, or RVUs, and surgery is going to generate a lot more of those RVUs." - Highlighting the financial incentives in healthcare that favor surgical intervention over conservative care.
• At 0:21:23 - "In the shoulder, the biggest one is the labrum. Almost everyone over the age of 40, 45 is going to have some degree of labral tearing. Almost everyone over the age of 40 has an identifiable rotator cuff pathology. That might not be a tear, it can be some fraying or some tendinopathy, and as you get older into your fifth, sixth, seventh decades and beyond, full-thickness tears of one or more tendons becomes the norm." - Establishing that structural tendon and labral changes on imaging are normal parts of aging.
• At 0:22:13 - "You're not your diagnosis. You're not the finding on the MRI. What I like to say to people is that yes, you have a meniscus tear. Yes, most do not require surgery. No, they don't actually heal, you're going to keep that meniscus tear, but very often the pain is going to go away." - Separating permanent structural MRI findings from clinical pain resolution.
• At 0:27:41 - "It's like a pair of jeans that you've worn for 20 years, right? You look down—I hate the word tear, that's my exacerbation here—because if you wore a pair of jeans and one day feel a breeze around your knee and you look down and there's a small hole, you're not going to say you tore your jeans. Tearing implies trauma, tearing implies injury." - Illustrating why clinical terminology should reflect age-appropriate wear rather than traumatic injury.
• At 0:38:12 - "Rest is almost never the answer, right? Tendons don't like rest. No tendon is going to heal with rest. Tendons require strain to convince them to change, to regenerate, to build new tendon structure which is appropriately oriented and capable of handling stress." - Explaining the mechanical requirement of loading for tendon rehabilitation.
• At 0:42:58 - "If you take out spaghetti from a box and hold it together as a bunch, that's what your tendon and the collagen within it should look like. Now drop that spaghetti on the floor. That's what severe tendinopathy looks like: the fibers are going everywhere, the spaces between the fibers are filled with substances that shouldn't be there, some of which are inflammatory, like uric acid. If you have high cholesterol, you have cholesterol there in between the fibers." - Describing the structural disorganization of tendinopathy and how metabolic byproducts infiltrate tendon tissue.
• At 0:48:48 - "I run with people on weekends who have bone on bone arthritis in their knee. And, you know, the one I'm thinking of, he's my age and bounds over mountains and hills and rocks and roots. He's not disabled. So your X—there are so many studies that show that your X-ray findings do not correlate with your symptoms." - Demonstrating that severe radiographic osteoarthritis does not automatically mandate disability or exercise restriction.
• At 1:04:51 - "Osteoarthritis is like losing all the asphalt on a street, it's all gone. Cartilage regeneration, now the state of the art is we can fill a pothole. So if there is a structure there and because of injury there's now a defect, we can fill that defect level with the rest of the street. But if all your cartilage is gone, we can't rebuild it back to anything. There's no scaffolding there." - Clarifying the current biological limits of cartilage regeneration in widespread osteoarthritis.
• At 1:06:08 - "Most rotator cuff tears occur because of a failure of biology. So we don't need stronger anchors, we don't need stronger sutures, we don't need more sutures. We need to find out how to alter the biology of the environment that led to the tear in the first place." - Explaining why surgically repaired atraumatic rotator cuff tears frequently re-tear within two years.
• At 1:08:38 - "So it might be helping you, it might not be helping you. It might be harming you, it might not be harming you. The bottom line is nobody knows. So I, for one, I'm not jumping on the peptide bandwagon. I don't think that physicians should until we know more about it." - Expressing clinical caution regarding unstudied peptides like BPC-157 and TB-500.
• At 1:20:43 - "Not all inflammation is bad for you. The acute inflammation that follows a ligament or tendon injury is actually quite good for you because the body needs to recruit new cells, specialized cells, to come in to that area." - Explaining why suppressing acute post-injury inflammation with ice or NSAIDs hinders tissue healing.
• At 1:27:22 - "We don't lose much strength as we age. I can bench almost what I benched, you know, when I was in my 20s, leg extension's the same. We lose a lot of power, we lose a lot of quickness, and a lot of balance. When you trip, very often you don't fall because of the trip, you fell because you couldn't recover." - Emphasizing the need to train speed, balance, and power in midlife to prevent catastrophic falls later in life.

Takeaways

• Give stable, atraumatic meniscus tears, partial rotator cuff tears, and labral tears at least 2 to 3 months of dedicated physical therapy before considering surgery, rather than rushing into an operation after just 1 month of symptoms.
• Optimize metabolic markers—specifically lowering elevated A1C, systemic inflammation (CRP/sed rate), high cholesterol, and high uric acid—to reduce baseline joint pain and improve tissue healing capacity.
• If scheduling a major joint procedure like a total knee replacement, implement a 2-to-3-month prehabilitation protocol combining targeted physical therapy exercises, protein supplementation, creatine, vitamin D optimization, and glycemic control.
• Rehabilitate tendinopathy and partial tendon tears by dialing back aggravating overuse volumes and introducing progressive isometric and mechanical loading rather than immobilizing the limb in a walking boot or resting completely.
• When treating an acute ankle sprain or ligament injury, avoid ice and NSAIDs to preserve the healing macrophage cascade; instead, use elevation above the heart, take Tylenol for pain, ditch immobilizing boots within 5 days, and use early weight-bearing motion to align healing collagen fibers over an 8-week functional recovery window.
• Avoid post-exercise ice baths during regular training blocks so you do not blunt muscular and biological adaptations, reserving cold immersion only for back-to-back competitive events where next-day soreness reduction is the sole priority.
• Vet injection therapies carefully: never accept repeated cortisone shots every 3 to 4 months or cortisone injected directly into a tendon; verify that any PRP provider delivers roughly 18 billion platelets rather than using a cheap 10 to 15 cc single-spin system; and avoid expensive stem cell clinics or unverified peptides (BPC-157, TB-500).
• Integrate plyometrics, balance work, and rapid foot-speed drills into your exercise routine starting in your 40s and 50s—before anabolic resistance sets in—to preserve the reactive power needed to catch yourself from a trip.