Experience faster recovery,
Less pain, Early mobility
with
Quads Sparing
Knee Replacement
Quadriceps Sparing (Subvastus) Knee Replacement
What is the Quads Sparing Approach?
The quadriceps sparing approach to total knee replacement is an advanced surgical technique that minimises tissue trauma and supports a faster, more comfortable recovery. Unlike traditional knee replacement methods that require cutting through the quadriceps tendon or muscle, this muscle-preserving procedure works beneath the vastus medialis muscle—hence the medical name subvastus approach. By avoiding damage to the quadriceps mechanism, patients often experience less pain, improved early mobility, and a quicker return to daily activities.
Key Benefits
- Less post-operative pain: Less disruption to muscle tissue leads to lower pain scores post-op.
- Improved early strength: Patients regain leg lift function more quickly.
- Faster return to walking and normal activity
- Shorter hospital stays or eligibility for short-stay surgery
- Reduced need for inpatient rehabilitation
- Improved patellar tracking with kinematic alignment
- Better functional outcomes
Who Is It For?
The subvastus approach is ideal for:
- Patients undergoing primary total knee replacement
- Those with healthy BMI and flexible knees
- Active individuals aiming for a faster recovery
It may not be recommended for patients with severe deformity, very stiff joints, or in revision knee replacements.
How the Procedure Works
- Instead of cutting through the quadriceps tendon, the incision is made to the side of the large and strong vastus medialis (part of the quadriceps muscle)
- The vastus medialis muscle is elevated gently to access the joint.
- The joint is replaced using standard implants through the muscle-sparing window.
- The incision is closed with minimal soft tissue disruption.
This approach prioritises the preservation of strength and stability by maintaining the quadriceps tendon and muscle.
Subvastus vs Traditional Knee Replacement
| Feature | Subvastus | Traditional |
|---|---|---|
| Quadriceps tendon cut | No | Yes |
| Recovery speed | Faster | Slower |
| Leg lift on Day 1 | Likely | Delayed |
| Incision size | Same | Same |
| Best for revisions? | No | Yes |
Post-Operative Rehabilitation
- Day 0–1: Mobilisation with physiotherapist
- Day 2: Independent leg lifts, stair practice
- Week 1–2: Transition from walker to cane or unaided
- Week 4–6: Driving, light exercise
- Week 8–12: Full activity and strength training
Recovery is supported by a tailored rehabilitation plan focused on strength, motion and function.
Why Choose a Quadriceps-Sparing Approach?
This muscle-preserving technique supports:
- Faster discharge from hospital
- Earlier return to walking and daily activities
- Less pain and swelling
- Improved early patient satisfaction
FAQs
Is the subvastus approach more painful?
No. It is generally less painful due to reduced muscle trauma.
Will I be able to walk sooner?
Yes. Most patients walk with assistance within 24 hours and regain knee control rapidly.
Is the prosthesis different?
No. The implants are standard; only the surgical approach is different.
