# THIS Is Why You Have Inner Knee Pain

Source: https://www.youtube.com/watch?v=SmxnAgSTf4w
Recap page: https://rapidrecap.app/video/SmxnAgSTf4w
Generated: 2025-11-11T02:40:27.288+00:00

---
## Quick Overview

Inner knee pain is commonly caused by five issues, including MCL injuries, Pes Anserine Bursitis, saphenous nerve irritation, meniscus tears, and knee arthritis, with the speaker emphasizing that pain and symptoms often overlap, requiring careful self-assessment to determine the specific root cause.

**Key Points:**
- The five common causes for inner knee pain discussed are MCL injuries, Pes Anserine Bursitis, saphenous nerve irritation, meniscus tears, and knee arthritis.
- MCL injuries occur when the knee is forced to bend inward (valgus stress) while the leg is extended or slightly bent, stressing the ligament on the inside of the knee.
- Pes Anserine Bursitis involves inflammation of the bursa located on the inside/medial aspect of the knee joint, often aggravated by repetitive activities like running or cycling.
- Saphenous nerve irritation causes pain that can radiate down the inner leg into the ankle and foot, even without significant swelling in the knee joint itself.
- Knee arthritis involves progressive wear and tear of the cartilage surfaces within the joint, leading to stiffness, especially in the morning, and potentially joint locking.
- Meniscus tears involve damage to the C-shaped cartilage cushions, often causing joint locking or pain that can flare up during an arthritis flare-up.

![Screenshot at 0:01: The physical therapist introduces the topic by asking if the viewer has inner knee pain and begins demonstrating the location of the structures using a life-size knee joint model.](https://ss.rapidrecap.app/screens/SmxnAgSTf4w/00-00-01.png)

**Context:** The video features a physical therapy specialist explaining the five most common structural causes of pain felt on the inner (medial) part of the knee. The speaker uses a physical model of the femur, tibia, and fibula to demonstrate the anatomical locations and mechanisms of injury for conditions like MCL tears, Pes Anserine Bursitis, and nerve irritation, contrasting these issues with knee arthritis and meniscus tears.

## Detailed Analysis

The speaker identifies five primary causes for inner knee pain: MCL injuries, Pes Anserine Bursitis, saphenous nerve irritation, meniscus tears, and knee arthritis. He first explains MCL injuries, which result from a valgus force (stress pushing the knee inward) that stretches the medial collateral ligament. Next, he covers Pes Anserine Bursitis, an inflammation of the bursa on the medial side below the knee joint, often caused by repetitive activities. The third cause is saphenous nerve irritation, which can cause burning or aching pain radiating down the inner thigh, leg, and into the foot. Fourth, meniscus tears, which involve damage to the shock-absorbing cartilage, can cause clicking, popping, or joint locking. Finally, knee arthritis, which typically affects older individuals, involves progressive cartilage wear, leading to morning stiffness and reduced motion. The speaker notes that these issues frequently overlap, and distinguishing the true source requires careful self-assessment, urging viewers to check his linked videos for detailed self-testing and treatment protocols, noting that successful management avoids unnecessary surgery or injections.

### Five Common Causes of Inner Knee Pain

- MCL Injuries
- Pes Anserine Bursitis
- Saphenous Nerve Irritation
- Meniscus Tears
- Knee Arthritis

### MCL Injury Mechanism

- Occurs when the knee bends inward (valgus stress) while the leg is extended or slightly bent, stressing the ligament on the inside of the knee (0:01:18).

### Pes Anserine Bursitis

- Inflammation of the bursa below the medial knee joint; often aggravated by repetitive movements like running or cycling (3:00).

### Saphenous Nerve Irritation

- Causes burning pain radiating down the inner thigh, leg, and into the ankle/foot; often lacks significant swelling (4:08).

### Meniscus Tears

- Damage to the C-shaped cartilage cushions, which can cause joint locking or clicking, especially during movement (6:44).

### Knee Arthritis

- Progressive cartilage wear, common in people 50+, causing morning stiffness and potential loss of motion (9:11).

### Program Information

- The presenter promotes his 'Knee Arthritis Recovery Program,' which focuses on addressing root problems through exercises and includes live coaching support, aiming to help people avoid surgery or injections (5:45).

![Screenshot at 0:01: The physical therapist introduces the topic by asking if the viewer has inner knee pain and begins demonstrating the location of the structures using a life-size knee joint model.](https://ss.rapidrecap.app/screens/SmxnAgSTf4w/00-00-01.png)
![Screenshot at 0:18: The speaker demonstrates the mechanism of an MCL injury by applying inward stress to the knee model \(valgus force\).](https://ss.rapidrecap.app/screens/SmxnAgSTf4w/00-00-18.png)
![Screenshot at 3:01: Text overlay identifies the second common cause: Pes Anserine Bursitis, which affects the medial side of the knee.](https://ss.rapidrecap.app/screens/SmxnAgSTf4w/00-03-01.png)
![Screenshot at 4:06: The speaker points to the inner side of the lower leg model to explain the path of the saphenous nerve, which runs down the inside of the leg \(4:11\).](https://ss.rapidrecap.app/screens/SmxnAgSTf4w/00-04-06.png)
![Screenshot at 6:44: Text overlay highlights the fourth cause: Meniscus Injuries/Tears, showing the C-shaped cartilage cushions between the femur and tibia on the model.](https://ss.rapidrecap.app/screens/SmxnAgSTf4w/00-06-44.png)
![Screenshot at 8:04: The speaker demonstrates how a meniscus tear can cause joint locking or catching when the knee moves \(8:06\).](https://ss.rapidrecap.app/screens/SmxnAgSTf4w/00-08-04.png)
![Screenshot at 9:11: The speaker discusses knee arthritis, noting that cartilage surfaces wear down, leading to stiffness and rough movement \(9:17\).](https://ss.rapidrecap.app/screens/SmxnAgSTf4w/00-09-11.png)
![Screenshot at 11:11: The speaker demonstrates the limited extension possible when the MCL is injured compared to the unaffected knee, using the model.](https://ss.rapidrecap.app/screens/SmxnAgSTf4w/00-11-11.png)
![Screenshot at 5:45: The video transitions to the speaker seated, promoting his 'Knee Arthritis Recovery Online Program' with a link in the description.](https://ss.rapidrecap.app/screens/SmxnAgSTf4w/00-05-45.png)