What causes developmental dysplasia of the hip, and how is it treated?

Developmental dysplasia of the hip occurs when the acetabulum doesn't form correctly, often due to positioning in utero or early infancy. It can lead to premature arthritis. Treatment often involves a Pavlik harness to ensure the hip remains in the socket during development.

What are the most common sources of hip pain in people under 50?

In individuals under 50, common causes of hip pain include stress fractures, labral tears, connective tissue issues, and muscle/tendon problems. Pain location, timing, and relation to activity help differentiate diagnoses.

What is a femoral neck stress fracture and how is it diagnosed?

A femoral neck stress fracture is a tiny crack in the bone caused by repetitive stress exceeding the bone's healing capacity. It typically presents as groin pain and is best diagnosed with an MRI, as X-rays may not show it initially.

How does femoral acetabular impingement (FAI) affect the hip?

FAI involves abnormal bone growth (cam lesion) at the head-neck junction, changing the ball's shape. This can cause pinching of the labrum and cartilage during movement, leading to tears and potential arthritis.

What are the risks associated with osteoporotic hip fractures in the elderly?

Hip fractures due to osteoporosis in individuals over 65 carry a significant mortality risk, with 15-30% dying within one year. Hospitalization and the subsequent inability to mobilize quickly contribute to this high rate.

What is the current status of stem cell therapy for hip issues?

True stem cell therapy is largely unproven and often illegal for orthopedic conditions in the US. While some biologic therapies like PRP show promise for specific tendon and joint issues, they are mainly symptom-modifying, and robust evidence for hip arthritis is limited.

What is the role of cortisone injections in managing hip pain?

Cortisone injections can provide temporary pain relief but are generally not favored for long-term management of hip arthritis due to concerns about cartilage damage. Hip replacement is often preferred for appropriate patients due to its high success rate.

Key Moments

Hip anatomy, pain, & treatment | Peter Attia & Adam Cohen

Peter Attia MD

Science & Technology4 min read60 min video

Aug 2, 2023|15,735 views|320|17

peter attia adam cohen hip hip anatomy pain treatment

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Key Moments

TL;DR

Understanding hip anatomy, pain causes (developmental dysplasia, stress fractures, FAI), and treatment options including biologics.

Key Insights

Hip joint's ball-and-socket structure, unlike the shoulder, is inherently more stable due to a deep acetabulum.

Developmental dysplasia of the hip, if untreated, can lead to uneven pressure distribution and early-onset arthritis.

Stress fractures in the femoral neck, especially tension-sided ones, can be severe and may require surgical intervention.

Femoral Acetabular Impingement (FAI) involves bone spurs that can damage the labrum and cartilage, leading to pain and potential arthritis.

Weakness in the gluteus medius and minimus (rotator cuff of the hip) is a common source of pain and can contribute to other lower extremity injuries.

While commonly marketed, 'stem cell therapy' for orthopedic injuries is largely unproven and often unregulated; PRP and micronized fat show some promise for symptom modification.

THE ANATOMY OF THE HIP JOINT

The hip is a ball-and-socket joint, significantly more stable than the shoulder due to its deep socket, the acetabulum, and the femoral head. The proximal femur includes the head, neck, and trochanteric regions. This structure forms early in utero, typically by the 30th week of gestation, highlighting the foundational importance of its development for lifelong joint health.

DEVELOPMENTAL DYSPLASIA OF THE HIP

Developmental dysplasia of the hip (DDH) occurs if the hip is not concentrically positioned in the acetabulum during late pregnancy or early childhood. This improper formation results in a shallow socket, which causes uneven pressure distribution and mechanical overload. Consequently, individuals with DDH are prone to developing arthritis later in life, even if the condition is asymptomatic in early years.

UNDERSTANDING HIP PAIN IN YOUNGER ADULTS

Hip pain in individuals under 50 can stem from various issues affecting different layers: bone and cartilage, connective tissues (ligaments, capsule), or muscles and tendons. Bone issues include stress fractures, particularly in the femoral neck, which present unique risks depending on their location (compression vs. tension side). Referred pain from the back must also be considered.

STRESS FRACTURES AND FEMORAL ACETABULAR IMPINGEMENT (FAI)

Endurance athletes may experience femoral neck stress fractures due to repetitive loading exceeding the bone's healing capacity. These fractures, often felt as groin pain, are best diagnosed via MRI. Femoral Acetabular Impingement (FAI) involves abnormal bone growth, typically a 'cam lesion' on the femoral neck, which can pinch the acetabular rim. This impingement can tear the labrum and damage cartilage, increasing arthritis risk.

THE ROLE OF THE HIP'S LABRUM AND MUSCULATURE

The labrum, a ring of cartilage around the acetabulum, enhances stability and creates a suction seal. While hip dislocations are rare, an underdeveloped or abnormal acetabulum (as in dysplasia) can lead to instability, often seen in dancers. The gluteus medius and minimus act as the hip's 'rotator cuff,' crucial for stability; their degeneration or tears cause significant pain and can contribute to other injuries.

HIP REPLACEMENT AND THE RISE OF ORTHOBIOLOGICS

Modern hip replacement surgery, often done through anterior approaches to minimize muscle damage, offers high satisfaction rates. Hip resurfacing preserves more bone but is performed less frequently. Orthobiologics, including Platelet-Rich Plasma (PRP) and micronized fat injections, are being explored for symptom modification in conditions like tendon tears and arthritis, though robust evidence, especially for hip arthritis, is still developing.

FRACTURES IN THE ELDERLY AND MANAGEMENT CHALLENGES

Femoral neck fractures in older adults, often linked to osteoporosis or osteopenia, carry a high mortality rate due to underlying health issues and the trauma of hospitalization and surgery. Prompt surgical intervention is critical for mobilization, but a multidisciplinary approach involving geriatric specialists is necessary for medical optimization, aiming to improve outcomes and reduce the significant functional decline common after such fractures.

THE REALITY OF STEM CELL THERAPY AND ORTHOPEDIC BIOLOGICS

The term 'stem cell therapy' is often misused for orthopedic treatments. While PRP and micronized fat injections are in use, they are primarily symptom-modifying and not true stem cell therapies, which are strictly regulated. Research, including bioregistry efforts, aims to clarify dosages and efficacy. While some studies show promise for PRP in knee arthritis and certain tendon issues, its effectiveness for hip arthritis is less established.

PREVENTION THROUGH STRENGTH AND FLEXIBILITY

Maintaining strong hip abductor and flexor muscles is crucial for preventing injuries and functional decline, especially as we age. Weak abductors can lead to various lower extremity problems, including knee instability. Addressing hip flexor tightness, common from prolonged sitting, is also vital to ensure proper balance with opposing muscle groups like the glutes and hamstrings, promoting overall hip health and resilience.

THE ROLE AND LIMITATIONS OF CORTISONE INJECTIONS

Cortisone injections can offer temporary pain relief for hip issues, but their use is cautioned due to potential negative effects on cartilage over time. For appropriate candidates, the high success rate of hip replacement surgery often makes it a preferred intervention. While hyaluronic acid injections may provide some benefit off-label, caution is advised, especially before hip replacement surgery, due to increased infection risk.

Mentioned in This Episode

●Supplements

●Tools

●Organizations

●Concepts

●People Referenced

Common Questions

The hip joint is a ball-and-socket joint, consisting of the femoral head (the ball) and the acetabulum (the socket). The ball is covered in cartilage, and the joint's design allows for stability and a wide range of motion.

Topics

Regenerative Medicine Health & Longevity Neuroscience & the Brain Hip Fractures Hip Anatomy Hip Pain Hip Arthritis Hip Injuries Orthopedic Surgery

Mentioned in this video

conceptDynamic Neuromuscular Stabilization (DNS)

A training philosophy that emphasizes eccentric loading of muscles, particularly relevant for hip adductor strength.

toolexosomes

Vesicles released by cells, sometimes misrepresented as stem cells in unapproved therapies.

personPeter Attia

Host of the podcast, asking questions and guiding the discussion on hip health.

organizationFederal Trade Commission (FTC)

A U.S. agency responsible for protecting consumers and ensuring fair competition, involved in cracking down on deceptive advertising of unproven therapies.

conceptOsteoporosis

A condition characterized by weakened bones, increasing the risk of fractures, particularly in the hip for older adults.

personAdam Cohen

Orthopedic surgeon and co-host discussing hip anatomy, pain, and treatment.

supplementPlatelet-Rich Plasma (PRP)

A biologic therapy derived from a patient's own blood, used to promote healing in tendons and joints, with some evidence for efficacy in specific conditions.

organizationFDA

The U.S. Food and Drug Administration, which regulates therapies and products, including stem cell treatments and biologics.

supplementHyaluronic Acid

A substance often injected into joints, particularly the knee, for arthritis pain relief, showing potential benefit when combined with PRP.

conceptCMS

Centers for Medicare & Medicaid Services, a U.S. agency that likely plays a role in regulating and covering treatments, including unproven therapies.

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