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Los Angeles Orthopaedic Surgery Specialists | Put Your Life Back into Motion!

Welcome to Los Angeles Orthopaedic Surgery Specialists

Opening Hours : 9AM to 5PM (Daily)
  Contact : (323) 264-7600

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Sports Medicine & Orthopedic Care

Our orthopaedic health clinic, Los Angeles Orthopaedic Surgery Specialists (LAOSS), is dedicated to getting you back into motion! We provide complete care for sports medicine, orthopaedic, and pediatric needs. Our minimally invasive services include Total Joint Replacement, Arthroscopic Surgical Procedures for the knee or shoulder and our surgeons specialize in Hand/Wrist and Foot/Ankle procedures. Quality focused treatments include cutting-edge, stem cell injections and platelet rich plasma (PRP) injections.

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Stem Cell Procedures

Our stem cell injections are designed to help your body heal damaged muscles, tendons, ligaments, and cartilage by utilizing your own cells or platelets (PRP), which repair damaged body parts. Ask to learn more about our premium, surgical services.

Joint Replacement

Our practice provides total joint replacements for hips, shoulders and knees. Our surgeons, along with cutting edge technologies, can provide the right solution for you. Whether that is a "partial joint" or "complete replacement", your new joint is a lifetime investment.

Trauma & Fracture Care

Our orthopaedic trauma and fracture care specialists are experts in treating challenging fractures in any part of the body. These specialists can also consult with you on non-unions (fractures that do not heal), mal-unions (fractures that heal improperly) and deformity correction.

Ortho Sub-Specialists

Our team of surgeons and providers offer comprehensive medical care for a wide variety of disorders and injuries that affect the hand & wrist, foot & ankle as well as pediatric orthopaedic conditions. We extensively treat athletes, 'weekend warriors', office professionals, as well as kids.

Meet our Doctors

With Board Certified Surgeons on staff, the LAOSS team of physicians is friendly, timely, and committed to patient follow through. Our staff of service providers and office personnel is also highly dedicated to patient needs and bilingual in English & Español.


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Dr. Kevin J. Pelton

Dr. Pelton, originally from Texas, is well known and respected in orthopaedic circles and has excellent bedside-manner! Throughout his career, Dr. Pelton has successfully completed thousands of joint surgeries ranging from partial to total joint replacement, arthroscopy of the knee & shoulder or hand & wrist. As a Board Certified member of the American Board of Orthopaedic Surgery, he remains an active member in the American Academy of Orthopaedic Surgeons. He also continues to mentor USC Residents, sharing his expertise in joint diseases and sports injuries. Dr. Pelton enjoys an active lifestyle with golf and sailing throughout Southern California.

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Dr. Matthew D. Longacre

Dr. Longacre completed a sports medicine fellowship at the Hughton Clinic in Columbus, GA, where he focused on arthroscopic treatments of shoulder or knee problems.

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Dr. David Barba

Dr. Barba is an orthopaedic surgeon who specializes in sport medicine and in knee, hip and shoulder joint replacement surgeries. After completing medical school at UCLA, Dr Barba completed his orthopaedic residency at Indiana University School of Medicine and subsequently participated in sports medicine fellowship in Phoenix, Arizona with the Orthopedic Clinic Association.

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Dr. Matthew Nalamlieng

Matthew D. Nalamlieng, DPM, a Southern Californian native specializes in both the surgical and conservative treatment of the foot and ankle. After receiving his undergraduate degree from The Master’s University, he went on to complete his podiatric medical degree at the Western University College of Podiatric Medicine in Pomona, CA, graduating as a member of the Pi Delta Honor Society.

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Premium Health Care

Located at White Memorial Medical Center in East LA, our medical clinic is centrally located just outside Downtown and easily accessible from the Greater Los Angeles area including Hollywood, Pasadena, Whittier, Calabasas, and Topanga Canyon in Southern California.


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Foot & Ankle Specialists
Hand & Wrist Procedures
Pediatric Care
Knee Arthroscopy
Shoulder Arthroscopy
Foot & Ankle Specialists

LA’s Premier Foot & Ankle Specialists Our foot and ankle surgeons are always on the cutting edge of medicine and technology.  Board Certified, they are leaders in foot and ankle care and committed to the best patient…

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Hand & Wrist Procedures

Hand & Wrist Treatments With Fellowship-trained surgeons, many common issues like fractures, carpal tunnel, tennis elbow, trigger finger and breaks are routinely treated by our physicians who are expert in mini-open surgery and other cutting-edge surgeries of…

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Pediatric Care

Orthopaedic Pediatric Care Specialists Los Angeles Orthopaedic Surgery Specialists offers a comprehensive treatment plan for the special orthopedic needs of children and adolescents alike. Our pediatric orthopedic team of professionals are experienced with children and provide a…

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Knee Arthroscopy

Knee Arthroscopy is the most commonly used procedure to determine knee injuries of any kind.  Because of its microscopic nature, our surgeons are able to review the knee joint in great detail,  contributing to its wide use.  …

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Shoulder Arthroscopy

Excellent Shoulder Arthroscopy Surgeons, 5 mins. from DTLA! Most patients aren’t fully aware of the severity of their shoulder injuries when they come see us in East LA, conveniently located at White Memorial Medical Center.  If you…

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News & Updates

Learn more about Los Angeles Orthopaedic Surgery Specialists and receive updates to the latest news in orthopaedic care and sports medicine.


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What Patients say About LAOSS


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  • I had my hip replaced by Dr. Pelton after it was bone to bone. In a matter of a month, i was able to walk again pain-free! Thank you LAOSS and Dr. Pelton.

    Jason R

  • I take care of myself as much as possible and when I visited Los Angeles Orthopaedic Surgery Specialists, I was pleasantly surprised of how well they care for their patients. I'm coming back for all of my orthopedic needs!

    Jaden W