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Dr. Allen Lu

Orthopedic Surgery
City of Industry, CA
24 years experience male

Locations

Office

Placentia

Address

1275 North Rose Drive, Suite 130, Placentia
Directions

My office hours

Thursday: 8:00am - 5:00am
Show more

Insurances accepted

Blue Cross of California

Blue Shield of California

CIGNA Health Care

Coventry Health Care

Aetna Life Insurance Company

Anthem BC Life & Health Insurance Company

First Health Group Corporation

Health Net

L.A. Care

Tricare

Universal Health Care

About

Bio

The single most important aspect of medicine is to understand that it is truly an art. Every patient is an individual, with different needs and different aspirations. In sports medicine, we need to tailor our care to your specific situation, whether you are a high performance professional athlete, active military, college athlete, high school athlete, club athlete, recreational athlete, or daily walker. The point is that treatment should be tailored to your specific situation. With medicine, it is also important to treat each patient with compassion. You never have to ask me what I would recommend for my own family, because I will treat you as family. I am a partner, companion, and friend in your treatment before I am a surgeon. But if you do indeed need surgery, you can be assured I will give you the best. If there is a better surgeon available to you for your particular problem, I will find him/her for you.

Specialties
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.

Orthopedic Surgery

Sports Medicine

Languages spoken

Mandarin

Doctor Q&A

495 Answers
177 Agrees
The number of answers this doctor has agreed with.
A 33-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Depends: Acl reconstructions vary a great deal. The majority of my patients can walk without crutches within a week. I let my patients walk out from surgery if... Read More
A 46-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Quite variable: A PCL partially heals in a slightly looser position. Some patients have minimal difficulty with a PCL tear while others have instability sensations an... Read More
A 37-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Yes: The acl reconstruction should not keep you from riding roller coasters. 6 weeks after surgery you may still have some trouble walking normally, so rem... Read More
A 30-year-old female asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Not generally: The paraspinal muscles are seldom really torn. They can become inflammed, irritated, or affected by the underlying nerves, but they do not generally t... Read More
A 47-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Physical exam or MRI: It may be time to see your friendly neighborhood orthopedic surgeon! a simple examination can point toward a retear, and an MRI can confirm it. Many t... Read More
A 55-year-old female asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Yes: Actually, a completely torn PCL often still has healing potential, though it usually heals in a looser position. The PCL rests completely outside the ... Read More
A 35-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
It may never: Large rotator cuffs, when left alone, do not heal on their own. Some of the inflammation may go away and the should can adapt to the changes, feeling ... Read More
A 22-year-old female asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Not a problem: After an acl tears initially, the stability of the knee changes. As long as you don't already have a significant meniscus tear along with it, and you ... Read More
A 55-year-old male asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Rest: The first home treatment is rest. Many times the trigger finger comes from inflammation around the tendon from overuse, trauma, or swelling from other... Read More
A 40-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Yes: Osteoporosis affects all of the bones in the body. The areas that are affected more are the areas prone to breaking and areas that hold the most weigh... Read More
A 40-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Variable: Pain after an acl reconstruction is quite variable, and can depend on the technique, time in surgery, and graft choices. The actual acl reconstruction... Read More
A 47-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Unnecessary: Screws used in acl reconstruction are either absorbable (which means the body will incorporate it), or non absorbable. A nonabsorbable screw is typica... Read More
A 44-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Yes: Unfortunately, an acl cannot heal on its own. Once torn, the acl can scar back down, but cannot function like the original acl. Because of this, knees... Read More
A 37-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
None: There are no braces that can substitute for the functions of an acl. Bracing technology has advanced greatly, but most of the rotation stability neede... Read More
A 23-year-old male asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
No: An acl, pcl, lcl, and biceps combined injury, we typically don't use any of your own tendons. To reconstruct those would need 3 to 5 separate grafts. ... Read More
A 48-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Blood supply: Because an acl is about 1cm thick, it takes time for the body grow into the replacement and recreate the structure of the original acl. There is no bl... Read More
A 36-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Yes: It is rare, but it also depends on how we are defining osteoarthritis. Osteoarthritis is a state where the cartilage in the joints have been worn down... Read More
A 30-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Depends: That depends on a number of factors: 1) allograft or autograft - when using your own tendon (either patellar tendon or hamstring tendon), the donor si... Read More
A 47-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Difficult and rare: It is fairly rare and difficult to tear both an acl and lateral collateral a the same time without tearing other structures. When it does happen, the ... Read More
A 46-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Difficult: It is difficult to actually prevent an acl tear. We have studies that show some small benefit from plyometrics and prevention exercises, but overall t... Read More
A 31-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Different: They function very differently, so the effects are hard to compare. The initial tear is traumatic in different ways. The patellar tendon ruptures with... Read More
A 26-year-old male asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Not likely: That diagnosis is not typical. There isn't really a mechanism of injury that would cause us to give such a diagnosis. So you more likely need to see a... Read More
A 34-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
See an orthopedist: Acl tears should be individualized to each patient. There is no one way to treat an acl tear. Depending on your activity level, age, and overall condi... Read More
A 30-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Yes: The acl functions to stabilize the knee in rotation, shifting, and some translation. Associated problems are quadricep muscle weakness or inhibition. ... Read More
A 26-year-old female asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Not generally: It is hard to say that there is no danger here. Bruising and swelling around the ankle is possible after acl reconstruction, but is not the norm. It d... Read More
A 35-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Balanced approach: We try to take each individual patient as a whole. We take the history of the injury as well as overall conditioning very seriously, this goes along w... Read More
A 54-year-old male asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Wonderful: The hip replacement is one of the best procedures we can perform. It takes patients with daily pain and inability to live a quality life, and within w... Read More
A 35-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Not really: An acl brace has not been shown to prevent any rotation in the knee. It really only prevents stress on the mcl or lcl ligaments. A patient without an ... Read More
A 25-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
1-4 weeks: It sometimes depends on the type of reconstruction as well as bleeding within the joint. Because of this, it is difficult to predict the amount and du... Read More
A 43-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Motion/strength: You cannot really speed up the healing of the mcl. It will take 2-3 months to heal regardless of how it is treated. However, knee motion and quad stre... Read More
A 42-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Variable: There is a wide variation in times needed to perform a knee replacement. Sometimes, complexity can also make a replacement take longer. In general, a ... Read More
A 29-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Depends: It is unlikely for you to walk without aide that quickly after an acl and meniscus, though no impossible. With an allograft (donor) all-inside reconst... Read More
A 30-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Elevation: The other way to reduce swelling is to elevate the injured part of the body. If a wrist is injured, then the wrist should be above the elbow, as well ... Read More
A 36-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Hard to judge: Buckling to one side does not sound as much like an acl injury. It sounds more like an mcl or lcl injury depending on which side it is buckling on. Th... Read More
A 36-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Relax: Typically, shoulder arthritis limits motion so much that it is difficult to perform any exercises beforehand. The surgery itself is usually quite succ... Read More
A 42-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Rarely: Typically an acl reconstruction takes between 30 minutes and 2 hours. For long cases, or those that require more narcotic pain medication use, a cathe... Read More
A 46-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
3 weeks after injury: In general, we have found that surgery on an acl makes a knee much stiffer when done immediately after injury. The mechanism is not certain, but most ... Read More
A 47-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Safe: Overall, shoulder resurfacing is very safe. The outcomes, however, depend on the amount of arthritis and deformity of the shoulder. The percentage of ... Read More
A 47-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Variable: That is a difficult position to be in. A combined acl, PCL and lcl surgery is difficult to begin with. With the right surgery and right rehabilitation... Read More
A 33-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Not generally: The knee replacement is stable at the time that it is performed. We use your own ligaments and tendons and do not generally harm them during surgery. ... Read More
A 34-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Yes: There are different ways of performing a knee scope. I personally only use two holes. One for the camera and fluid that goes in and out, and one for t... Read More
A 38-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Depends: Talk to your doctor about this. It more depends on whether your particular case and your impairment and disability prevents you from walking medium di... Read More
A 48-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Very uncommon: The mcl (medial collateral ligament) tears outside of the knee joint. Because of this, the torn fibers are close enough to each other that they almost... Read More
A 42-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Certainly: Vitamin supplements are an excellent source to balance our diet and prevent inadvertent deficiencies. However, it is not generally needed to help an a... Read More
A 43-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
You cannot: The mcl and acl ligaments are structures that develop on their own. They cannot be strengthened with exercises or training. You can, however, strength... Read More
A 34-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Yes: When throwing sidearm, a different set of muscle contractions control the motion of the shoulder, however, the same rotator cuff muscles control the s... Read More
A 43-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Bleeding: When you sprain the mcl, you tear the ligament. This caused bleeding in the location of the tear. You probably elevated the knee, so the blood travell... Read More
A 39-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Many: Many patients have successfully undergone meniscus transplants with improvement in stability and protective knee function. While we do not know how we... Read More
A 48-year-old member asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Lots: There are a number of problems that can cause pain with each throw and each need to be carefully evaluated before throwing any further. The first thin... Read More
A 27-year-old female asked:
Dr. Allen Lu
Dr. Allen Luanswered
Orthopedic Surgery 24 years experience
Various: There are too many possibilities that can cause these symptoms, from back problems, to disc problems, to bladder or kidney infections, to abdominal is... Read More

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Testimonials
Recommendations and Thank you notes are endorsements given from patients or other doctors.

5
Recommendations
558
Thank you notes
Dec 3, 2012
Excellent ACL orthopedic surgeon.
Great doctor.
HealthTap member
Mar 30, 2015
Dr. Lu is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Thank u so much I was told that I have problems with my L-4 and L-5, S-1 was sure if it could contribute to the pain in the elbow that's so
HealthTap member
Thank you Dr.Lu! bruising is deep purple red and blue grn ylw. Your response gave me relief as I have to wait till morning to call Dr. :)
HealthTap member
Thank you, your answer was very helpful! I had a partial meniscectomy 2 weeks ago and hopefully back to activity soon

Education & Training

Medical/Graduate school

UCLA School of Medicine, CA
Graduated 1997MD

Residency

University of Rochester

Awards

Multiple teaching awards
Top Orthopedic Surgeon , Third Place, California - Winter
2013
HealthTap Founding Doctor

Affiliations

SCOSI Orthopedics
American Academy of Orthopaedic Surgeons
90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.
Answer emailed
in 24 hours or less