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Uses for PRP or "platelet-rich plasma" continue to expand. The next frontier in orthopedic medicine is the field of orthobiologics where physicians use stem cells, growth factors, and other peptides to heal or repair the injured parts of the body...
High School Fall Season contact sports (football and soccer) bring about many injuries ranging from bumps and bruises to more serious injuries requiring surgical intervention...
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knee injury prevention

  • Indiana University Southeast
  • Louisville Ballet
  • South Oldham Sports Teams
  • Spalding University

Knee Injuries, Knee Arthroscopy, ACL Surgery and Knee Replacement

Find answers to frequently asked questions about common knee injuries, knee pain, ACL surgery, knee replacement and other orthopedic conditions. If you have additional questions about our orthopedic services, please call 502-212-2663 for more information.

What are the most common sports injuries that affect the knee that need surgery? 

The two most common knee injuries that occur after a sports injury that need surgery are a meniscal tear and an ACL tear. Dr. Grossfeld has a lot of experience with ACL surgery, ACL reconstruction and meniscus surgery.

What are the main causes of the ACL injury?

There is much scientic debate over the cause of an ACL injury. Please see my article  Can the ACL Injury be Prevented? Yes it Can! for a more comprehensive explanation on the cause of ACL injury and tears.

In order for the anterior cruciate ligament (ACL) to be torn, the tibia (lower leg bone / shin) must shift forward to transect or rupture the ligament. Hyper extension of the knee causes a similar event. The ACL injury typically occurs in the female athlete with a quadriceps passive event. This happens when a female athlete is running and suddenly stops or changes directions. This can also occur when landing from a jump such as landing from a rebound in basketball. Most men experience an ACL injury with a quad active event such as being clipped in a blindsided fashion. The common example is a football player who is tackled when running down the field.
I am a serious athlete with an ACL injury.  Will I ever be able to compete again after ACL surgery?
The answer is yes but most people do not compete at the same competitive level. Only 45 to 75 percent of athletes will return to the same level of competitive play following an ACL injury depending on what scientific study is reviewed.
What is a torn meniscus?
The meniscus is the shock absorber that sits between the two bones in the knee joint. There are two of them. One is located on the inner side (medially) and one is situated on the outer half of the knee (laterally). They function as two shock absorbers in the knee. The menisci can get torn. When they tear it usually affects the inner rim of the meniscus. Symptoms of a meniscus tear are typically: swelling, sharp pain located near the joint line and clicking.
How can I tell if my child has adolescent anterior knee pain syndrome?
Adolecent anterior knee pain syndrome is typically seen in females with flat feet, knocked (valgus) knees and hyper mobile kneecaps. Most girls will complain of a diffuse dull, achy pain that is located in the front of the knee joint. Commonly it involves both knees. The pain is intensified with climbing up and down stairs, sitting with the knees in a flexed position and jumping. Treatment is most commonly completed with arch supports that are placed in the shoes, a special knee brace called a patella tracking orthosis and physical therapy to help strengthen the hip and knee muscles.
Somebody told me I might need to consider arthroplasty. What is it?
Arthroplasty is also known as joint replacement. The joints that are commonly replaced are located in the knee and hip. Less commonly arthroplasty is performed in the shoulder and ankle. Arthroplasty is performed for people with advanced arthritis.
Should I get a referral to an Orthopedic surgeon if I hear popping sounds in my knee?
Knee popping is common. As long as it is not associated with pain no referral is needed. Persistent pain and swelling associated with popping could be a sign of a more serious condition such as a meniscal tear. If you are experiencing knee pain and swelling with the popping in your knee, it is advisable that you seek medical treatment with an orthopedic surgeon.
How many knee surgeries does Dr. Grossfeld perform a year?
In 2011, Dr. Grossfeld performed 178 knee cases.
What is Dr. Grossfeld's surgical site infection rate? .006%


This video provides an overview of ACL injury, ACL tear, ACL surgery, ACL reconstruction, treatment for torn anterior cruciate ligament and prevention of ACL injury.

Interested in more information about common knee injuries, ACL injury, ACL surgery, knee arthritis, knee replacement surgery, knee arthroscopy and more? Check out Dr. Grossfeld's orthopedic and sports medicine blog for more information.

What People Are Saying

I am a classical ballet dancer with the Louisville Ballet. I appreciate Dr. Grossfeld as an orthopaedic because she makes best efforts to understand the mastery and consequence of dancing eight hours a day. Dr. Grossfeld has comprehensive resources for treatment and understands the importance of rehabilitation. But most importantly, she makes sure I can do what I love...Dance..

- Erica De Lao (ballet dancer)

My name is Dylan Grandon. I am 21 years old, a full time student, and a starting catcher for the Georgetown College baseball team. Dr. Grossfeld has done two surgeries on me and they have both gone smoothly and I could not have asked for better results. When I was 16 she performed my first arthroscopic knee surgery. My recovery time took only six days before I played a full on 100% basketball game. Read more...

- Dylan Grandon (full time student)

I have been a patient of Dr. Grossfeld's since 1997. She has always been very professional, as has her office staff. It's nice to come into the office and have the staff recognize you instead of being treated like "just another patient". Dr. Grossfeld has always approached my treatment carefully and cautiously, including consulting with other doctors outside of her practice and even presenting me at a conference to best plan out my course of treatment. Read more...

- Emily Freeman

When the reality set in that I had a severe case of Compartment Syndrome, I knew that choosing to have surgery could allow me achieve my dream of playing at a professional level and for my country. Initially I was apprehensive, but Dr. Grossfeld was calm, confident and positive throughout the whole process. Read more...

- Current professional team: Amazon Grimstad FK in Norway

The care that I have received from Dr Stacie Grossfeld has been excellent. She has performed 2 surgeries on me with great results after both procedures. Her office staff is wonderful. They always have smiles on their faces and they work hard to schedule appointments around my busy work schedule. Read more...

- Kelly Dike (Athletic trainer at South Oldham High School)

I have been a patient of Dr. Grossfeld's since 2004, when Orthopaedic Specialists were the team doctors for the Kentucky Karma Women's professional football team. Since that time, she has performed three arthroscopic knee surgeries and a rotator cuff surgery(and repair) on me. Read more...

- Lori Fitzgerald