The Q-Angle Explained

เจาะลึกเรื่อง Q-Angle
ดร.คิม ลิลลีย์

When it comes to athletic footwear, one size or shape does not fit all. And yet, for decades, most women’s sneakers have simply been smaller versions of men’s shoes. But here’s the thing: women are not just smaller men. Our bodies, and how we move, are different. And one of the most overlooked factors in this difference is something called the Q-angle.

What Is the Q-Angle, and Why Does It Matter

Q-Angle (Quadriceps Angle) คือมุมที่เกิดจากจุดตัดระหว่างเส้นจากสะโพกถึงลูกสะบ้า (หัวเข่า) และจากลูกสะบ้าถึงกระดูกหน้าแข้ง โดยทั่วไปแล้ว ผู้หญิงจะมีสะโพกที่กว้างกว่าผู้ชาย ทำให้มีค่า Q-Angle ที่กว้างกว่าด้วย โดยเฉลี่ย ผู้หญิงมี Q-Angle ประมาณ 15-20 องศา ขณะที่ผู้ชายอยู่ที่ประมาณ 10-15 องศา 

Here’s where things get interesting: women generally have wider hips than men, and as a result, larger Q-angles. On average, a woman’s Q-angle ranges from 15–20 degrees, while a man’s is usually around 10–15 degrees.

The Q-Angle and Injury Risk in Women

Here’s where the science gets real: A larger Q-angle is associated with a higher risk of several common sports-related injuries in women, including:

  • Patellofemoral Pain Syndrome (runner’s knee)
  • ACL injuries
  • Plantar fasciitis
  • Shin splints
  • IT band syndrome

It’s not just bad luck. It’s biomechanics.

When a sneaker doesn’t accommodate the structural reality of the female Q-angle, it can exacerbate these issues. Think of it like a car that’s slightly out of alignment. You can still drive it, but over time, you wear down the tires, and in this case, your joints.

Why Are Most Women’s Sneakers Just “Shrink It and Pink It”

The athletic footwear industry has traditionally focused on male data - male athletes, male biomechanics, male injury patterns. Women’s sneakers have too often been treated as an afterthought: a smaller size, a narrower shape, maybe a splash of blush or lavender. This approach is outdated. Worse, it’s negligent.

Women deserve footwear that supports their unique anatomy, encourages optimal performance, and reduces risk of injury. And that means engineering sneakers from the sole up - literally.

What Should Women’s Sneakers Actually Do Differently

To account for the biomechanical differences, women’s performance trainers should incorporate:

  1. พื้นรองเท้าส่วนหน้า (Forefoot) กว้างขึ้น KIR is proven to be greater in women compared to men, specifically during running. This causes a high force to be applied to the lateral knee.
  2. More Supportive Medial Structures
Women are more prone to overpronation. ป้องกันอาการเท้าบิดเข้าด้านใน (Overpronation) ช่วยลดแรงกดบนเข่า
  3. ปรับ Heel-to-Toe Drop (ความสูงของส้นถึงปลายเท้า) A more customised drop can help distribute pressure more evenly and reduce strain on the knees and Achilles.
  4. การรองรับแรงกระแทกเฉพาะจุด (Targeted Cushioning) Because the force path is different in female strides, cushioning should reflect these pressure points - particularly under the ball of the foot and lateral heel.
  5. การออกแบบ Lasts (แม่พิมพ์รองเท้า) สำหรับผู้หญิงโดยเฉพาะ of a shoe should reflect not just length and width, but also instep height, arch contour, and heel width - areas where women’s feet differ most from men’s.

The Future Is Female (Engineered)

ผู้หญิงในปัจจุบันต้องการรองเท้าที่ตอบโจทย์ทั้ สไตล์และสรีระไม่ใช่เพียงแค่เรื่องความสวยงาม แต่ต้องรองรับการเคลื่อนไหวจริง และนี่คือเหตุผลที่ ดร.คิม ลิลลีย์ หัวหน้าฝ่ายวิจัยและพัฒนาของ FitFlop ได้พัฒนา FFRUNNER. รองเท้าที่คำนึงถึง Q-Angle อย่างจริงจัง 

Sneakers Should Support How Women Actually Move The Q-angle may seem like a small angle, but it’s a big deal. It affects alignment, comfort, and long-term joint health. Footwear designed with the female Q-angle in mind isn’t a luxury - it’s a necessity for anyone serious about performance, injury prevention, and biomechanics. So next time you’re shopping for trainers, ask: were these made for women, or just marketed to them?

About FitFlop

We were born different. Unlike other brands in our category, we’re a smart engineering company that happens to make footwear. Through biomechanical engineering and ergonomic design, we help people achieve more and feel better with contemporary every-day footwear that helps maximise your energy as you move.

Founded in 2007 by entrepreneur Marcia Kilgore, we’ve been set apart from the pack from the get-go. Harnessing our unique scientific approach (fusing world-class biomechanics and advanced technology with bold, directional design) led to our first product – the WalkStar 1 sandal – quickly becoming a global phenomenon.

And it’s this unique, smart ethos – blending science and shoe-making smarts – that has created the fast-paced, celebrated brand we are today, with more than 65 million pairs sold across the globe.

You can find us in 73 countries with a total of over 5,000 stores and stocked by more than 2,000 retailers and 31 distributors. Our 145 FitFlop concept stores are located in the UK, US, Europe, the Middle East, India, and the APAC region. As well as our growing head office in the UK, we have new showrooms in London and New York.

Our community of wearers spans motivations and generations, women and men who live intentionally – always looking for ways to help optimise their every-day.