Grossmont Orthopaedic Medical Group

5565 Grossmont Center Drive
Bldg 3 Suite 256, La Mesa, CA 91942
Services & Specialties

Hip and Knee

Dr. Peter Hanson specializes in lower extremity disorders with expertise in hip and knee replacement and arthroscopy. His skills include anterior approach hip replacement surgery.


According to the American Orthopaedic Society for Sports Medicine, more than 4 million knee arthroscopies are performed worldwide each year.

Knee arthroscopic surgery is a procedure performed through small incisions in the skin to repair injuries to tissues such as ligaments, cartilage, or bone within the knee joint area. The surgery is conducted with the aid of an arthroscope, which is a very small instrument guided by a lighted scope attached to a television monitor.

The advantage of arthroscopy over traditional open surgery is that the joint does not have to be opened up fully. Instead, for knee arthroscopy, only two small incisions are made — one for the arthroscope and one for the surgical instruments to be used in the knee cavity. This reduces recovery time and may increase the rate of surgical success due to less trauma to the connective tissue.

The range of knee arthroscopic surgeries represents very different procedures, risks, and aftercare requirements. Common injuries for which knee arthroscopy is considered include:

  • Cartilage tears (meniscus tears)
  • Ligament strains and tears
  • Cartilage deterioration underneath the kneecap (patella).

While the clear advantages of arthroscopic surgery lie in surgery with less anesthetic, less cutting, and less recovery time, this surgery nonetheless requires a very thorough examination of the causes of knee injury or pain prior to a decision for surgery.


Joint replacement surgery is becoming more common, with knees and hips replaced most often.

Elective total hip replacement and total or partial knee replacement surgeries are performed to relieve pain and lack of mobility caused by disease (osteoarthritis, osteoporosis and rheumatoid arthritis, for example) or injury to the hip and knee joints.

In hip and knee surgery, the joints are replaced with a prosthetic joint made of metals and plastics. Your new hip and knee joint will give you increased strength, movement and mobility and, once you have healed, you will again be able to take part in everyday activities again.


Hip Replacement

First performed in 1960, hip replacement surgery is one of the most successful operations in all of medicine. According to the Agency for Healthcare Research and Quality, more than 285,000 total hip replacements are performed each year in the United States.

Patients who have decided with their physician that a hip replacement is the best option to treat their hip pain may be eligible for the Anterior Hip Replacement.

Conventional (lateral/posterior) hip replacement surgery requires that muscle and tendon be detached or split making it necessary for the patient to adhere to strict range of motion restrictions for the first 6-8 weeks after surgery to prevent dislocation of the hip while the soft tissues heal and muscles strengthen. Hip flexion is limited to no more than 90 degrees, no pivoting or twisting of the leg is allowed, and you cannot cross your legs or ankles during this time.

Anterior Hip Replacement Surgery allows the surgeon to expose the hip without removing as much muscle from the bone and minimally disturbing the capsule of the hip joint, which means faster recovery time. This approach involves a single, very short incision into the patient's leg and is performed by entering the front of the hip as opposed to the back of the hip. The Anterior Hip Replacement Approach is one of the least invasive procedures which have proven to be a surgical technique that minimizes the pain and the time from surgery to recovery.


 Knee Replacement

Knee replacement surgery can be performed as a partial or a total knee replacement. In general, the surgery consists of replacing the diseased or damaged joint surfaces of the knee with metal and plastic components shaped to allow continued motion of the knee.

When you have a total knee replacement, the surgeon removes damaged cartilage and bone from the surface of your knee joint and replaces them with a man-made surface of metal and plastic. In a partial knee replacement, the surgeon only replaces one part of your knee joint.

The knee joint is the largest and most complex and therefore the most stressed joint in the body. It is this complexity and stress which can cause arthritis. Although there are several conditions which may lead to the need for knee replacement, arthritis (whether it be osteoarthritis, rheumatoid arthritis or traumatic arthritis) is the most common reason. A number of other factors contribute to joint disease including genetics, developmental abnormalities, repetitive injuries and obesity. 


Just like any joint replacement the success of the surgery depends on many factors including the advanced state of the arthritic joint at the time of surgery, the overall health of the patient and the dedication to the physical therapy required after the surgery.