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A Baker's cyst, also known as a popliteal cyst, is a type of fluid collection behind the knee. [4] Often there are no symptoms. [2] If symptoms do occur these may include swelling and pain behind the knee, or knee stiffness. [1] If the cyst breaks open, pain may significantly increase with swelling of the calf. [1]
Pain and swelling or focal mass at the level of the joint. The pain may be related to a meniscal tear or distension of the knee capsule or both. The mass varies in consistency from soft/fluctuant to hard. Size is variable, and meniscal cysts are known to change in size with knee flexion/extension.
X-ray of the knee of a 12-year-old male, showing knee effusion of medium severity, marked by black arrows. It displaces the patella anteriorly and extends into the suprapatellar bursa . An X-ray is useful to verify that there is no break or dislocation when there is a history of trauma.
Prepatellar bursitis is an inflammation of the prepatellar bursa at the front of the knee. It is marked by swelling at the knee, which can be tender to the touch and which generally does not restrict the knee's range of motion. It can be extremely painful and disabling as long as the underlying condition persists.
Symptoms may include knee pain, swelling, and redness just below the kneecap. [2] It may be complicated by patellar tendonitis. [1] Risk factors include kneeling or crawling. [4] It may also be brought on by frequent bending of the knees while standing, squatting, running, or jumping.
Synovial fluid examination [3] [4]; Type WBC (per mm 3) % neutrophils Viscosity Appearance Normal <200: 0: High: Transparent Osteoarthritis <5000 <25: High: Clear yellow Trauma <10,000
Reducing acute joint swelling: Arthrocentesis (or drainage of joint) may be useful to relieve joint swelling and improve range of motion. Local steroid injections can also reduce fluid accumulation short-term, but do not prevent onset of episodes.
Lateral view X-ray of the knee demonstrating fragmentation of the tibial tubercle with overlying soft tissue swelling. Specialty: Orthopedics: Symptoms: Painful bump just below the knee, worse with activity and better with rest [3] Usual onset: Males between the ages of 10 and 15 [3] Females between 8 and 14: Duration: Few weeks to years. Risk ...