Injuries Some common injuries include: *Sprain (Ligament sprain) *Medial collateral ligament *Lateral collateral ligament *Anterior cruciate ligament *Posterior cruciate ligament *Tear of meniscus *Medial meniscus *Lateral meniscus *Strain (Muscle strain) *Quadriceps muscles *Hamstring muscles *Popliteal muscle *Patellar tendon *Hamstring tendon *Popliteal tendon *Hemarthrosis – Hemarthrosis tends to develop over a relatively short period after injury, from several minutes to a few hours. Fractures *Femoral fracture *Tibial fracture *Patella fracture Diseases Some of the diseases of cause of<unk>  include the following: *Knee osteoarthritis *Chondromalacia patella *Baker's cyst *Meniscal cyst *Discoid meniscus *Osgood-Schlatter disease *Larsen-Johansson disease *Knee rheumatoid arthritis *Osteochondritis dissecans disease *Synovial chondromatosis disease * Tumors * Ankylosing spondylitis *Reactive arthritis *Tuberculosis arthritis *Septic arthritis (Pyogenic arthritis) *Osteomyelitis *Hemophilic arthritis *Gout (Gouty arthritis) *Neuroma Inflammations *Bursitis of the<unk>  *Prepatellar bursitis - Housemaid's<unk>  (most common) *Infrapatellar bursitis - Clergyman's<unk>  (Superficial infrapatellar bursitis and Deep infrapatellar bursitis) *Semimembranosus bursitis *Tendinitis *Patellar tendinitis (Jumper's<unk>  *Hamstring tendinitis *Popliteal tendinitis *Synovitis of the<unk>  Deformities Common deformities of the<unk>  include: *Bipartite patella (two-part<unk> cap) *Genu varum (bow legs) *Genu valgum (knock-knees) *Genu recurvatum <unk>  hyperextension) *<unk>  flexion deformity Syndromes *Patellofemoral pain syndrome *Plica syndrome *Iliotibial band syndrome *Hoffa's syndrome *Joint hypermobility syndrome Dislocations *Patella dislocation *Knee joint dislocation (Tibiofemoral joint dislocation) Cold temperature<unk>  is more common among people working in the cold than in those in normal temperature. Cold-induced<unk>  may also be due to tenosynovitis of the tendons around the<unk> , in which cold exposure has a specific role, either as a causative or a contributing factor. Frank arthritis has been reported in children due to frostbite from extreme cold causing direct chondrocyte injury. There is also a hereditary disease, familial cold autoinflammatory syndrome (FCAS), which often features<unk> , in addition to hives, fever and pain in other joints, following general exposure to cold.<unk>  due to less physical movement A lower level of physical activity and a work environment where one is required to sit in a chair during the work day is one reason for developing<unk>  joint pain, as the lower degree of physical movement tends to weaken the<unk>  muscles. Blood vessels also can be affected, leading to development of painful conditions. Working on building strength through a full range of motion is crucial for rebuilding strength and getting rid of<unk> . As age progresses the movement of the<unk>  joint involves higher friction with adjacent tissue and cartilages. Other causes * Ligamentous laxity * Fat pad impingement *<unk>  effusion * Deep vein thrombosis * Peripheral vascular disease * Exostosis Referred<unk>  Referred pain is that pain perceived at a site different from its point of origin but innervated by the same spinal segment. Sometimes<unk>  may be related to another area from body. For example,<unk>  can come from ankle, foot, hip joints or lumbar spine.
Knee pain
Back pain
Knee effusion
Jaw claudication
Low back pain
Xiphodynia
Round ligament pain
Wrist pain