Patella

Os patellae

The patella is a triangular sesamoid bone with a broad superior base and a pointed inferior apex. Its posterior surface articulates with the patellar surface of the femur. The anterior surface is roughened for the quadriceps tendon attachment.

प्रकार Bone
शरीर तंत्र Skeletal
शरीर क्षेत्र Thigh
लैटिन नाम Os patellae
FMA ID 24485

कार्य

The largest sesamoid bone in the body, embedded within the quadriceps tendon. Increases the mechanical advantage of the quadriceps muscle by increasing the lever arm for knee extension.

नैदानिक महत्व

Patellar fractures result from direct trauma or forceful quadriceps contraction. Patellar dislocation typically occurs laterally. Chondromalacia patellae (runner's knee) causes anterior knee pain from cartilage degeneration.

अक्सर पूछे जाने वाले प्रश्न

What is the function of the patella?
The patella (kneecap) is a sesamoid bone embedded in the quadriceps tendon that improves the mechanical efficiency of knee extension. By increasing the moment arm of the quadriceps force, the patella reduces the muscle force required to extend the knee by approximately 33–50%. It also protects the anterior knee joint from direct trauma.
Where is the patella located?
The patella is located at the anterior aspect of the knee joint, within the quadriceps femoris tendon. Its posterior surface articulates with the femoral trochlea, forming the patellofemoral joint. Superiorly the quadriceps tendon attaches to it, and inferiorly the patellar tendon (ligament) connects it to the tibial tuberosity. It is the largest sesamoid bone in the human body.
What are common patella injuries?
Common patella injuries include patellar fractures (from direct impact or forceful quadriceps contraction), patellar dislocation (usually lateral, common in young females), and patellofemoral pain syndrome (runner's knee), characterized by anterior knee pain during activities like climbing stairs or squatting. Chondromalacia patellae refers to softening and deterioration of the patellar articular cartilage.

संबंधित संरचनाएं

articulation joint nutrient foramen conduit outer fibrous layer of periosteum capsular layer of periosteum periosteum pre-cartilage condensation pre-chondrogenic condensation postcranial axial skeleton axial skeleton radial element actinost cavity of bone organ bone organ cavity

चिकित्सा अस्वीकरण

यह सामग्री केवल शैक्षिक और सूचनात्मक उद्देश्यों के लिए है। इसे पेशेवर चिकित्सा सलाह, निदान या उपचार के विकल्प के रूप में नहीं माना जाना चाहिए। किसी चिकित्सा स्थिति के बारे में आपके किसी भी प्रश्न के लिए हमेशा अपने चिकित्सक या अन्य योग्य स्वास्थ्य प्रदाता से सलाह लें। इस वेबसाइट पर पढ़ी गई किसी बात के कारण कभी भी पेशेवर चिकित्सा सलाह को नजरअंदाज न करें या इसे लेने में देरी न करें।

Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.