About Us: About the Practice

Dr. William F. Sima is committed to excellence by pledging to provide the highest quality of orthopaedic care possible. Along with the treatment of immediate or chronic problems, we strive to integrate the doctrine of prevention in all our treatment plans as a way to alleviate possible future difficulties.

We are pleased to have you as a patient. If you have any questions, always feel free to contact our office and our trained staff will assist you in any way possible.

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Platelet rich plasma (abbreviated PRP) is a new treatment used for some common orthopedic conditions. PRP is a concentration of platelet cells taken from your blood, and these platelets have growth factors that may help in the healing process of chronic injuries. Growth factors are chemicals that signal the body to initiate a healing response. By injecting PRP into areas of an injury, the hope is to stimulate and optimize your body's ability to heal the chronic conditions such as knee arthritis, rotator cuff injuries, and tennis elbow.

Learn more about Platelet Rich Plasma »

Mesenchymal Stem Cells (MSCs) are adult stem cells found in the bone marrow of adults. These undifferentiated cells have the ability to differentiate into specialized cells including new cartilage and bone tissue. MSCs can be harvested in the outpatient setting and are now being used by orthopedic surgeons to treat cartilage defects, meniscal tears, improve healing of broken bones and injured muscles, tendons and ligaments. When MSCs are used in high concentrations, they may help speed up the healing process and also may help treat common conditions like arthritis.

Learn more about adult stem cells »

Autologous Chondrocyte Implantation (ACI) is a two-step procedure. New cartilage cells are grown and then implanted in the cartilage defect. First, healthy cartilage tissue is removed from a non-weightbearing area of the bone. This step is done as an arthroscopic procedure. The tissue which contains healthy cartilage cells, or chondrocytes, is then sent to the laboratory. The cells are cultured and increase in number over a 3- to 5-week period. An open surgical procedure, or arthrotomy, is then done to implant the newly grown cells. The cartilage defect is prepared. A layer of bone-lining tissue, called periosteum, is sewn over the area. This cover is sealed with fibrin glue. The newly grown cells are then injected into the defect under the periosteal cover. ACI is most useful for younger patients who have single defects larger than 2 cm in diameter. ACI has the advantage of using the patient's own cells, so there is no danger of a patient rejecting the tissue. It does have the disadvantage of being a two-stage procedure that requires an open incision. It also takes several weeks to complete.

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The Osteoarticular Transfer System commonly known as OATS, replaces damaged cartilage in the knee with healthy cartilage from another area of the joint, relieving pain and restoring movement and function to the joint. A mosaicplasty is the name for a general procedure that treats severe cartilage damage, and the OATS procedure is one type of mosaicplasty. Although cartilage is essential to smooth, painless movement of the joints, some areas have a more critical need for the support and cushioning provided by the cartilage. During the OATS procedure, small plugs of healthy cartilage are removed from areas of the joint that are not in critical need, and transferred to the area of damaged cartilage. The OATS procedure is ideal for patients with small areas of cartilage damage that can be easily repaired with a graft. Widespread cartilage damage cannot usually be treated with this procedure, since there may be insufficient amounts of healthy cartilage available. After the OATS procedure, patients will need to undergo a lengthy physical therapy program in order to restore range of motion and relieve pain and swelling on the joint. Most patients will be on crutches for 6 to 12 weeks after surgery before they can successfully bear weight on the joint again. Long-term follow-up care will be required in order to maintain the results of this procedure.

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The Anterior Approach to hip replacement surgery allows the surgeon to reach the hip joint from the front of the hip as opposed to the lateral (side) or the posterior (back) approach. This way, the hip can be replaced without detachment of muscle from the pelvis or femur during surgery.

Learn more about Anterior Hip Replacement »
View Anterior Hip Replacement Videos »
Visit Newhipnews.com: Dedicated to Anterior Hip Replacement »

Subchondroplasty (SCP) is a minimally invasive treatment for defects in bone called bone marrow lesions. Bone marrow lesions represent the healing response to areas of insufficiency and micro fractures known to cause joint pain and accelerate joint damage. These lesions are often found within the knee joints. Bone marrow lesions can be diagnosed using magnetic resonance imaging (MRI). SCP treats bone marrow lesions in the knee joint by filling in the defects with an absorbable material. This material is then eventually resorbed and replaced with healthy bone. This procedure can be performed in 30-60 minutes in an out patient surgery center and patients can return home the same day of their surgery.

Learn more about Subchondroplasty »

Unicompartmental knee replacement or partial knee replacement is a surgical procedure where only the damaged portion of the knee is replaced. There are three compartments of the knee. Depending on if your arthritis is confined to a single compartment of your knee will dictate whether you may be a good candidate. Advantages of the unicompartmental knee replacement are quicker recovery, less pain after surgery and less blood loss. In some cases, a unicompartmental knee replacement can be performed in an outpatient surgical suite and patients can return home the same day of their surgery.

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SpeedBridge technique is a knotless technique for the repair of a rotator cuff tear that creates a quick and secure construct with no knots that maximizes contact between tendon and bone to enhance healing.

Learn more about SpeedBridge Technique »


Our Specialties Include

Hip Surgery
  • Hip Arthroscopy
  • Total Hip Replacement
  • Hip Resurfacing
  • Anterior Approach for Hip Replacement
Knee Surgery
  • Arthroscopic Knee Surgery
  • Meniscal Surgery
  • ACL Reconstruction
  • Knee Ligament Reconstruction
  • Cartilage Transplantation
  • Partial Knee Replacement
  • Total Knee Replacement
  • Osteoarticular transplant
Shoulder Surgery
  • Rotator Cuff Repair
  • Arthroscopic Shoulder Surgery
  • Arthroscopic Shoulder Stabilization/Reconstruction
  • Arthroscopic SLAP/Labral Repairs
  • Arthroscopic Rotator Cuff Repair
  • Total Shoulder Replacement
  • A-C Joint Stabilization/ Reconstruction
Hand and Wrist Surgery
  • Boutonniére Deformity
  • Carpal Tunnel Syndrome
  • DeQuervain's Tendinitis
  • Distal Radius Fracture (Colles' Fracture)
  • Dupuytren's Contracture
  • Trigger Fingers
  • Arthritis
Foot and Ankle Surgery
  • Hallus Valgus deformity (Bunions)
  • Hammertoes
  • Heel Pain
  • Ankle Fractures
  • Ankle Fusion
  • Ankle Replacement
Sports Medicine
  • Meniscus Tear
  • ACL Reconstruction
  • Treatment of Shoulder Dislocation/Instability
  • Treatment of Rotator Cuff Disorders
  • Common Sporting and Overuse Injuries
Work Compensation Injury
Platelet Rich Plasma (PRP)
Stem Cells