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Moving from superficial to deep structures, the roof is formed by: the skin. [1]the superficial fascia. [1] This contains the small saphenous vein, the terminal branch of the posterior cutaneous nerve of the thigh, posterior division of the medial cutaneous nerve, lateral sural cutaneous nerve, and medial sural cutaneous nerve.
Another is between the popliteal artery and the posterior surface of the knee-joint. It receives afferents from the knee-joint, together with those that accompany the genicular arteries. The others lie at the sides of the popliteal vessels, and receive, as efferents, the trunks that accompany the anterior and posterior tibial vessels. [2]
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]
Knee effusion, informally known as water on the knee, occurs when excess synovial fluid accumulates in or around the knee joint. It has many common causes, including arthritis , injury to the ligaments or meniscus , or fluid collecting in the bursa , a condition known as prepatellar bursitis .
Table 2: Major types of soft-tissue sarcomas in children Tissue of origin Type of cancer Most common locations in the body Most common ages Muscle (striated) Embryonal and Alveolar rhabdomyosarcoma Head and neck, genitourinary tract Infant–6 Alveolar soft part sarcoma: Arms, legs, head, and neck 10–19 Muscle (smooth) Leiomyosarcoma Trunk 15-35+
Chondromalacia patellae (also known as CMP) is an inflammation of the underside of the patella and softening of the cartilage.. The cartilage under the kneecap is a natural shock absorber, and overuse, injury, and many other factors can cause increased deterioration and breakdown of the cartilage.
Osteochondroma is the most common benign tumor of bone. [1] [2] The tumors take the form of cartilage-capped bony projections or outgrowth on the surface of bones ().[3] [4] It is characterized as a type of overgrowth that can occur in any bone where cartilage forms bone.
Aneurysmal bone cyst (ABC) is a non-cancerous bone tumor composed of multiple varying sizes of spaces in a bone which are filled with blood. [1] [4] The term is a misnomer, as the lesion is neither an aneurysm nor a cyst. [5]