Flexion
Plain English: Knee comes toward your chest.
Real life: Sitting, walking uphill, stepping up, running stride recovery.
Main players: Hip flexors, rectus femoris, core support.
Picture your thigh folding toward your torso.
Movement Manual · Module 1
Hip Explorer
A visual way to learn why your hips feel tight, how they rotate, and how they connect to your knees, low back, glutes, and everyday movement.
3D
Visual-first anatomy
Rotate the model. Learn the movement. Connect it to real life.Movement first, anatomy second.
Most people do not need to memorize every Latin name first. They need to understand what the joint is doing and which muscles help control it.
3D model: “Pelvis and Femurs” by CaitlynnH on Sketchfab. License shown on Sketchfab as Creative Commons Attribution.
View source modelMovement map
The six hip movements that actually matter.
These are the movements you see in squats, hiking, running, sitting, lunging, and basic daily life.
Extension
Plain English: Thigh moves behind you.
Real life: Walking, hiking uphill, running push-off, standing tall from a lunge.
Main players: Glutes and hamstrings.
Picture pushing the ground behind you.
Internal rotation
Plain English: Thigh rotates inward.
Real life: Squatting, cutting, turning, controlling knee position.
Main players: Glute med/min fibers, adductors, TFL depending on position.
Picture the thigh bone spinning inward in the socket.
External rotation
Plain English: Thigh rotates outward.
Real life: Deep squat, athletic stance, opening the hip, changing direction.
Main players: Deep rotators, glute max, piriformis region.
Picture the thigh bone spinning outward in the socket.
Abduction
Plain English: Leg moves away from the midline.
Real life: Side steps, single-leg balance, keeping pelvis level.
Main players: Glute medius, glute minimus, TFL.
Picture stepping sideways without letting the pelvis drop.
Adduction
Plain English: Leg moves toward the midline.
Real life: Cutting, skating-style movement, pulling the legs together.
Main players: Adductor group on inner thigh.
Picture the inner thigh pulling the leg back under you.
Real-life mode
Why does my body feel like this?
This is what makes the page more useful than a normal anatomy encyclopedia.
My hips feel tight from sitting
The front of the hip is held in a shortened position while the glutes are often underused. The fix is usually not just stretching. You also want to remind the glutes how to help.
- Hip flexors feel short
- Glutes may feel sleepy
- Low back may overarch or compensate
Starter idea: Try hip flexor mobility paired with glute bridges, split squats, or step-ups.
My knees cave in when I squat
The knee often follows what the hip and foot allow. If the thigh bone rotates inward without control, the knee may drift inward too.
- Hip rotation control matters
- Glute medius helps stabilize the pelvis
- Ankle and foot mobility also matter
Starter idea: Try slow bodyweight squats, lateral band walks, and controlled single-leg work.
My low back gets cranky hiking
If the hip does not extend well, your low back may try to create the motion instead. Uphill hiking exposes this fast.
- Limited hip extension
- Glutes not powering each step
- Spine taking extra work
Starter idea: Try glute strength, hip extension mobility, and shorter stride control on climbs.
Quiz mode
Make it stick.
Quick checks so this becomes something you actually learn, not just scroll past.