The Knee: One of the Most Commonly Injured Joints in the Body
The knee is one of the most commonly injured joints in the human body, and for good reason. It sits between the two longest lever arms in your skeleton -- the femur above and the tibia below -- and is subjected to enormous forces during everyday activities like walking, climbing stairs, squatting, and running.
What most people do not realize is that the knee is actually two distinct joints enclosed in one capsule: the tibiofemoral joint (where the thigh bone meets the shin bone) and the patellofemoral joint (where the kneecap tracks in the groove of the thigh bone). Problems in either joint -- or both -- can cause knee pain. And pain in the thigh, knee, or calf can come from a broad spectrum of conditions, which is why accurate diagnosis matters so much.
At MoloTherapy in Columbia, MO, knee conditions are among the most frequent reasons people walk through our door. Here is what you need to know.
The Tibiofemoral Joint: Where Most Knee Injuries Happen
The tibiofemoral joint has to balance two competing demands: stability and mobility. The femoral condyles (the rounded ends of the thigh bone) sit on the relatively flat tibial plateaus (the top of the shin bone), with menisci acting as shock-absorbing washers between them.
Key structures include:
- The menisci: Two C-shaped pads of cartilage (medial and lateral) that deepen the surface of the tibial plateaus, distribute load, absorb shock, and improve joint stability. Meniscus tears are among the most common knee injuries.
- The ACL (anterior cruciate ligament): Prevents the tibia from sliding forward relative to the femur. ACL tears are devastating because they eliminate a primary stabilizer of the knee, particularly during cutting, pivoting, and deceleration.
- The PCL (posterior cruciate ligament): Prevents the tibia from sliding backward. PCL injuries are less common but can occur from direct impact to the front of the shin.
- The MCL (medial collateral ligament): Resists forces that push the knee inward (valgus stress). MCL sprains are common in contact sports.
- The LCL (lateral collateral ligament): Resists forces that push the knee outward (varus stress).
A narrow intercondylar notch -- the groove where the ACL and PCL attach -- has been associated with an increased risk of ACL injuries. This is one of the anatomic factors we assess during a thorough knee examination.
The Patellofemoral Joint: The Forgotten Source of Knee Pain
The kneecap is the largest sesamoid bone in the body, embedded in the quadriceps tendon above and the patellar tendon below. Its posterior surface is covered with the thickest cartilage in the body -- up to 7 millimeters thick -- because of the enormous compressive forces it endures.
Patellofemoral pain syndrome (PFPS) is one of the most common knee complaints, especially among younger and more active populations. It typically presents as pain around or behind the kneecap that worsens with stairs, squatting, prolonged sitting, or kneeling.
The causes of patellofemoral pain are multifactorial: muscle imbalances between the inner and outer quadriceps, tightness in the IT band or lateral structures, poor hip strength leading to inward knee collapse, and subtle variations in the shape and alignment of the kneecap and femoral groove.
Other Common Knee Conditions
- Osteoarthritis: Progressive wear of the articular cartilage, most common in the medial (inner) compartment. The medial tibial plateau has a surface area about 50 percent larger than the lateral side, yet it bears more load -- making it the most common site of degenerative change.
- IT band syndrome: Friction of the iliotibial band over the lateral femoral condyle, causing pain on the outside of the knee. Common in runners and cyclists.
- Patellar tendinopathy (jumper's knee): Degeneration of the patellar tendon just below the kneecap, common in sports that involve jumping and rapid deceleration.
- Baker's cyst: A fluid-filled swelling behind the knee that often indicates an underlying problem like a meniscus tear or arthritis.
- Referred pain: Hip pathology can refer pain to the knee, and lumbar disc problems can cause knee-area symptoms. A thorough screen of the hip and spine is essential with any knee complaint.
How We Approach Knee Pain at SoftWave By MoloTherapy
At our Columbia, MO clinic, every knee evaluation includes assessment of the entire lower kinetic chain -- hip, knee, ankle, and foot -- because knee problems rarely exist in isolation. We test joint stability, muscle strength and firing patterns, movement quality, and tissue irritability to build a complete picture of what is driving your pain.
Our treatment approach combines targeted manual therapy, progressive strengthening with emphasis on both the quadriceps and hip stabilizers, neuromuscular control training, and SoftWave therapy to address the tissue-level dysfunction.
How SoftWave Therapy Treats Knee Pain
SoftWave therapy is one of the most effective tools we have for knee conditions at SoftWave By MoloTherapy. The acoustic waves penetrate deep into the joint structures -- reaching the menisci, ligaments, tendons, and articular cartilage -- to activate the body's natural repair mechanisms.
For osteoarthritis, SoftWave promotes new blood vessel formation and stem cell migration to areas of cartilage degeneration. For tendinopathy, it stimulates the tissue remodeling that has stalled. For post-surgical patients, it accelerates the recovery timeline by enhancing every phase of healing.
The knee has great demands placed on it in terms of both stability and mobility. Treating it well requires understanding both the anatomy and the biomechanics -- and addressing the whole chain, not just the joint that hurts.
If knee pain is slowing you down, limiting your activity, or keeping you up at night, schedule an evaluation at SoftWave By MoloTherapy in Columbia, MO. We will get to the bottom of it and build a plan that gets you moving again with confidence.