Orthopedic Performance Institute

Orthopedic Performance Institute Specializing in pediatric and adult orthopedics, treating injuries and diseases of the

Happy Earth Day from Orthopedic Performance Institute! There’s no better way to celebrate than by getting outside and mo...
04/22/2026

Happy Earth Day from Orthopedic Performance Institute!

There’s no better way to celebrate than by getting outside and moving your body. Whether it’s a walk on a local trail, a jog through the park, or simply stepping outside to enjoy some fresh air—your joints and muscles will thank you.

And don’t let a little rain stop you! A light drizzle can make your time outdoors even more refreshing (just be mindful of slippery surfaces). Staying active, even in less-than-perfect weather, helps keep your body strong, flexible, and ready for whatever adventures come next.

At Orthopedic Performance Institute, we’re here to keep you moving—on Earth Day and every day.

Get outside. Stay active. Take care of your body.

Shoulder replacement surgery—also known as shoulder arthroplasty—is an increasingly common and highly effective procedur...
04/21/2026

Shoulder replacement surgery—also known as shoulder arthroplasty—is an increasingly common and highly effective procedure for relieving pain and helping patients get back to the activities they enjoy. In fact, outcomes today are comparable to hip and knee replacements when it comes to reducing pain and improving function.

Common conditions that may lead to shoulder replacement include:
• Osteoarthritis (wear-and-tear arthritis)
• Rotator cuff injuries
• Severe fractures or poorly healed injuries
• Rheumatoid arthritis and other inflammatory conditions
• Osteonecrosis (loss of blood supply to the bone)

At Orthopedic Performance Institute, our specialists are dedicated to helping you move better, feel stronger, and live without limits. If shoulder pain is holding you back, we’re here to help you explore the right treatment options for your lifestyle.

Schedule a consultation today and take the first step toward lasting relief.

From youth players to seasoned competitors, some of the most common baseball injuries we treat include:Shoulder Injuries...
04/17/2026

From youth players to seasoned competitors, some of the most common baseball injuries we treat include:

Shoulder Injuries – Repetitive throwing can lead to rotator cuff strains/tears and labrum injuries, causing pain and decreased velocity.

Elbow Injuries – UCL tears are especially common in pitchers and may require advanced treatment, including Tommy John surgery.

Overuse Conditions – Young athletes are at risk for “Little League elbow” and “Little League shoulder” from over-pitching.

Acute Injuries – Hamstring strains, ankle sprains from sliding, and impact injuries from the ball can happen in an instant.

No matter your position, proper care matters. Our team is dedicated to diagnosing injuries early, creating personalized treatment plans, and getting you back on the field safely.

Don’t let pain sideline your season. Call Orthopedic Performance Institute to schedule an evaluation and keep your game strong.


04/16/2026
Hip pain slowing you down? There’s a modern surgical option designed to help you recover faster and get back to living l...
04/15/2026

Hip pain slowing you down? There’s a modern surgical option designed to help you recover faster and get back to living life.

At Orthopedic Performance Institute, Dr. Matthew Dwyer and Dr. Christopher Phelps perform the anterior muscle-sparing hip replacement, an advanced, minimally invasive technique that accesses the hip joint from the front—allowing surgeons to work between muscles instead of cutting them.

Key Benefits of the Anterior Approach include:
- Minimal Muscle Damage – Major muscles are not detached or cut, helping preserve the hip’s natural stability.
- Faster Recovery – Many patients are able to walk the same day and quickly progress from walkers to canes.
- Reduced Precautions – Fewer movement restrictions compared to traditional hip replacement approaches.
- Better Precision – On average, more accurate implant positioning and a lower risk of dislocation.
- Smaller Scar – Typically results in a smaller, less noticeable incision.

Often referred to as the Direct Anterior Approach (DAA) this technique minimizes tissue trauma and helps patients return to normal activities sooner.

If hip pain is limiting your mobility or quality of life, it may be time to explore your options. Call (210) 545-7171 to schedule a consultation with Dr. Dwyer or Dr. Phelps and learn if muscle-sparing hip replacement may be right for you.

Our feet carry us through every step of life—yet they’re often the most overlooked part of our bodies. During National F...
04/10/2026

Our feet carry us through every step of life—yet they’re often the most overlooked part of our bodies. During National Foot Health Awareness Month, it’s a great reminder to take care of the foundation that keeps us moving.

At Orthopedic Performance Institute, our orthopedic specialists diagnose and treat a wide range of foot and ankle conditions that can affect mobility, comfort, and quality of life. From everyday aches to complex conditions, our team provides both surgical and non-surgical treatment options designed to help patients stay active and pain-free.

Common foot conditions we treat include:
• Plantar Fasciitis – inflammation of the tissue on the bottom of the foot that causes intense heel pain, often treated with stretching programs, orthotics, or injections.
• Achilles Tendonitis or Tears – degeneration or rupture of the Achilles tendon, managed with immobilization, physical therapy, or surgical repair.
• Foot and Ankle Arthritis – including arthritis of the big toe (hallux rigidus), treated with medication, injections, or joint fusion procedures when necessary.
• Fractures and Sprains – including stress fractures from overuse and ankle sprains, treated with bracing, casting, or surgical stabilization..

If foot pain is slowing you down, it may be time to have it evaluated. Your feet support you every day—make sure you’re giving them the care they deserve. Call (210) 545-7171 to schedule an evaluation.

Dr. Justin Riojas, Sports Medicine Specialist with Orthopedic Performance Institute,  treats patients ages 5 and up for ...
04/07/2026

Dr. Justin Riojas, Sports Medicine Specialist with Orthopedic Performance Institute, treats patients ages 5 and up for a wide range of sports and activity-related injuries.

- Sprains and acute injuries
- Knee and shoulder injuries
- Bone fractures and casting
- Concussions
- Rotator cuff injuries and other forms of tendonitis
- Overuse injuries and stress fractures
- Arthritis pain
- PRP (Platelet-Rich Plasma) injections and other advanced treatment options

Whether it’s a young athlete, weekend warrior, or someone dealing with everyday joint pain, Dr. Riojas focuses on getting patients healed, moving, and back to their active lives as quickly and safely as possible.

Same day or next day appointments are now available. Call (210) 545-7171 to schedule your visit with Dr. Riojas today.

Happy Easter from all of us at Orthopedic Performance Institute!
04/05/2026

Happy Easter from all of us at Orthopedic Performance Institute!

Don’t Let an Injury Take You Out of the Game!Whether you’re driving the lane, shooting threes, or cheering from the side...
04/03/2026

Don’t Let an Injury Take You Out of the Game!

Whether you’re driving the lane, shooting threes, or cheering from the sidelines, basketball can put extra stress on your knees, shoulders, and ankles. If pain or injury is slowing you down, the sports medicine specialists at Orthopedic Performance Institute are here to help you get back in the game.

Dr. Alexandra Matthews and Dr. Justin Riojas provide expert sports medicine care for athletes and active individuals of all ages—helping diagnose injuries, guide recovery, and keep you performing at your best.

Call (210) 545-7171 to schedule an appointment today.

April Fool's! …Or Is It? You might think we’re joking if we told you that knee replacement surgery can sometimes be done...
04/01/2026

April Fool's! …Or Is It?

You might think we’re joking if we told you that knee replacement surgery can sometimes be done on an outpatient basis—meaning many patients go home the very same day.

But this is no joke.

Using the subvastus knee replacement approach, patients often experience less pain, faster recovery, and a quicker return home after surgery. In fact, outpatient knee replacement is routinely performed by Dr. Matthew Dwyer and Dr. Christopher Phelps at Orthopedic Performance Institute.

So while April 1st is known for surprises, this is one that’s very real—and very good news for patients needing knee replacement.

Call (210) 545-7171 to schedule an evaluation and learn if outpatient knee replacement may be right for you.

March is Women’s History Month--a time to recognize and celebrate the women whose dedication, talent, and leadership mak...
03/27/2026

March is Women’s History Month--a time to recognize and celebrate the women whose dedication, talent, and leadership make a lasting impact on our communities.

In healthcare, women continue to shape the future of medicine through compassion, innovation, and expertise. At Orthopedic Performance Institute, we are proud to recognize Dr. Alexandra Matthews, a Sports Medicine Specialist whose work helps patients stay active, recover from injuries, and return to the activities they love.

Every day, women like Dr. Matthews contribute to society by advancing patient care, supporting healthy lifestyles, and inspiring the next generation of women in medicine. From athletes to weekend warriors, her commitment to helping patients move better and live stronger reflects the powerful difference women make in healthcare and beyond.

This Women’s History Month, we celebrate the dedication, leadership, and positive impact of women who make our communities healthier and stronger.

Address

1139 East Sonterra Boulevard
San Antonio, TX
78258

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+12105457171

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