📍 Manassas, Fair Oaks, & Gainesville, VA 📞 703-393-1667
Mon–Fri 8am–5pm | Schedule Online →
Dr. Zachary Weidner, M.D.
HIP & KNEE REPLACEMENT SURGEON
Get Back to
Living Pain-Free
Again
Dr. Zachary Weidner specializes in minimally invasive anterior hip replacement and MAKO robotic knee replacement — less pain, faster recovery, life-changing results.
🏆 Board Certified
🎓 Fellowship Trained
🤖 MAKO Certified
⭐ US News Recognized
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🏥
Same-Day Surgery Available
Go home the day of your joint replacement
💪
Muscle-Sparing Technique
Anterior hip, Subvastus SubV Knee, faster recovery
🤖
MAKO Robotic Technology
Precision-guided joint replacement surgery
📍
Convenient Offices
Fair Oaks, Manassas & Gainesville
WHAT WE TREAT
Advanced Hip & Knee Replacement Surgery
Fellowship-trained, board-certified expertise in the most advanced joint replacement techniques available.
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Anterior Total Hip Replacement
A muscle-sparing approach that accesses the hip from the front — less pain, faster recovery, fewer restrictions.
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Outpatient Joint Replacement
Go home the same day as your hip or knee replacement surgery. Available to appropriate candidates at our surgery centers.
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MAKO Robotic Total Knee
CT-planned, robotically guided total knee replacement for optimal alignment and longer-lasting results.
⚙️
MAKO Robotic Partial Knee
Replace only the damaged compartment of the knee — preserving more of your natural joint with robotic precision.
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Quad-Sparing SubV Knee Replacement
A subvastus technique avoiding the quad tendon — reducing pain and accelerating rehabilitation.
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PRP Injections
Biologic injection therapies for patients seeking non-surgical options for hip and knee pain management.
MEET YOUR SURGEON
FELLOWSHIP
TRAINED
SURGEON
Dr. Zachary Weidner, M.D.
A fellowship-trained orthopedic surgeon dedicated to restoring mobility and quality of life for patients throughout Northern Virginia through the most advanced joint replacement techniques available.
Fellowship Training in hip and knee replacement surgery
Board Certified Orthopedic Surgeon
Mako Robotic System certified for partial and total knee replacement surgery
Recognized by US News & World Report as a top orthopedic surgeon
The Centers for Advanced Orthopedics - Prince William Orthopedics
PATIENT STORIES
What Patients Are Saying
"
★★★★★
Dr Weidner is the best! He listens, he explains, and he is just one of the best doctors I have ever had. He did a THR on both of my hips and I never had a single issue. My most recent surgery in August ‘25, I was walking the next day without assistance. I was back to doing all my horse barn chores within 10 days. I highly recommend him for hip or knee replacement. The entire office is just a pleasure to work with! Thank you guys!
- Christy Q.
Anterior Total Hip Replacement
"
★★★★★
Dr Weidner is an excellent doctor. He did my friends knee replacement on left and right. Her results were amazing. He reached out to her shortly after her being released from the hospital to check on her as well. I saw him a day ago because I trusted him and how well my friend did. I will definitely have him do my knee replacement surgery soon.
- Linda N.
Mako Total Knee Replacement
4.9 / 5.0
★★★★★
Across Healthgrades, Vitals, US News & Google
"
★★★★★
Dr. Weidner replaced my right hip in 2018, and the entire process was amazing! In June of 2025 Dr Weidner replaced my left hip. Once again, the entire experience was incredible. Dr Weidner is an exceptional surgeon. If I had a third hip, I'd have him replace that one also!!! The entire team at CAO was always extremely professional, courteous, and efficient. Thank you all!