Modified Thomas Stretch
Learn how to do the Modified Thomas stretch to improve quadriceps and hip mobility, with setup, dosage, key cues, common mistakes, and adjustment guidance.
How to Do the Exercise
Setup
Lie near the edge of a firm surface. Hold the opposite knee toward your chest and allow the working thigh to relax toward the edge. Loop a strap around the working foot if needed to gently bend the knee.
How to perform it
Keep the opposite knee comfortably toward your chest and gently bend the working knee with the strap until you feel a comfortable stretch through the front of the thigh or hip. Hold without forcing the position, then slowly release.
Dosage
2 sets, 20–30 second hold, Rest 30 seconds
What to Focus On
Key cues
- Keep the opposite knee comfortably toward your chest
- Let the working thigh relax toward the edge
- Use the strap only to create a gentle, tolerable stretch
Why use it
Improves quadriceps and hip-flexor mobility when anterior-thigh or hip tightness is limiting comfortable movement.
When to use it
Useful when quadriceps or hip-flexor tightness is limiting comfortable knee flexion, hip extension, or upright movement.
Common mistakes
- Arching the low back to create more range
- Pulling aggressively on the strap
- Forcing knee flexion beyond a comfortable stretch
Know When to Progress or Scale Back
Use your movement quality and symptom response to decide whether the current version still fits.
Progress when
- The current hold feels comfortable and controlled
- You can maintain the position without low-back compensation
- Symptoms settle appropriately after the stretch
Scale back if
- The stretch produces sharp or escalating knee pain
- The low back repeatedly arches to obtain the position
- Pain or swelling remains meaningfully worse afterward
Was This the Right Challenge Today?
Use the same three signals that matter inside Therapeutic Edge recovery plans: how challenging the exercise felt, how well you controlled it, and how your body responded afterward.
Answer after the exercise and, when possible, after you know your later or next-day response. This checks one exercise today; it does not change or save a rehab plan.
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