Originally Answered: Muscle pain around the knee?
There are two different name muscles to be considered. If the pain is viewed from the front, looking down, then you might have strained your vastus medialis and/or your sartorius muscles.
If the pain occurs along the back side of the knee (the popliteal space), then you could have injured the Semitendinosus muscle.
If the injury occurred within the knee hinge joint, then there are more options to consider the following:
4 most common knee injuries are: MCL tear, LCL tear, ACL tear, and/or PCL tear.
The MCL tear would occur on the (medial aspect) inner side of the knee. This medial collateral ligament tear is a close tie when regarding how common it is.
The LCL tear (Lateral Collateral Ligament) is rarer but occurs on the outer aspect of the knee. This could occur if the knee was hit from the inside (Medial side).
The ACL tear would occur in/around the center of the knee (behind the patella "knee cap"). This is 1 of 2 ligaments that attach the femur and tibia. This is more common amongst athletes (i.e. foot ball, cheerleaders, soccer players ...) This Anterior Cruciate ligament tear is due to acute stress and/or tension applied to the ligament. In sports that place great pressure on the knees, especially with twisting forces, it is common to tear one or more ligaments or cartilages. An increasingly common victim to injury is the anterior Cruciate ligament (ACL), often torn as a result of a rapid direction change while running or some other, violent twisting motion. It can also be torn by extending the knee forcefully beyond its normal range. In some such cases, other structures incur damage as well. Especially debilitating is the unfortunately common "unhappy triad" of torn medial collateral and anterior cruciate ligaments and a torn medial meniscus. This typically arises from a combination of inwards forcing and twisting.
Before the advent of arthroscopy and arthroscopic surgery, patients having surgery for a torn ACL required at least nine months of rehabilitation. With current techniques, such patients may be walking without crutches in two weeks, and playing some sports in but a few months.
The PCL tear (Posterior Cruciate Ligament) occurs the same as the ACL injury ... It all depends on the aspect which he knee was impacted.
The articular disks of the knee-joint are called menisci because they only partly divide the joint space. These two disks, the medial meniscus and the lateral meniscus, consist of connective tissue with extensive collagen fibers containing cartilage-like cells. Strong fibers run along the menisci from one attachment to the other, while weaker radial fibers are interlaced with the former. The menisci are flattened at the center of the knee joint, fused with the synovial membrane laterally, and can move over the tibial surface.
The menisci serve to protect the ends of the bones from rubbing on each other and to effectively deepen the tibial sockets into which the femur attaches. They also play a role in shock absorption, and may be cracked, or torn, when the knee is forcefully rotated and/or bent.
One last (less common than the 4 listed) knee injury would be acute impairment to the patellar tendon. If the Patella seems to be stable and seems to move freely when the leg is tightly straightened, than a complete tear has occurred. Alternately, if you have your uncle sit down on the ground ... legs straight out & he/you try to move the patella and pain occurs just below the patella then he could have "Patellar tendinitis". This is the least worrisome diagnosis, because it can be treated with the following acronym: "R.I.C.E.S”: (Most/all refer to this as R.I.C.E.) In working with patients for the past 11 years, I have realized that there was a step not included, but should be implied because the RICE theory does not incorporate the patients non-compliance to 100% follow the "Rest" instruction
Rest: Try to keep off of the affected joint.
Ice: Ice the area (Frozen peas and/or corn works the best because it conforms to the irregular knee joint)
Compression: Compression prevents swelling & blood pooling usually an A.C.E. wrap does the job.
Elevation: ensure the joint is elevated at least to the same level as the heart. This helps reduce bruising.
If the patient needs to move from one-spot-to-another --> Secure the site. Use a tight (metal supports built into the brace) on the knee. Only move if the need occurs (i.e. going to bed, getting a drink, going to the bathroom ...)! A cane or crutch should be used as well as the brace to ensure no further injury occurs.
If there is an actual tear in the ACL, PCL, MCL, and/or LCL ... surgery is most commonly the best resolution. There are disorders of the knee which are not necessarily the result of injury, for example patellofemoral syndrome and arthritis. These are easily treated.
Hope this helps.
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