or misinterpreted‚ Neumann (2012) chooses to examine the convex-concave rule as applied to studies performed on the arthrokinematics of abduction of the glenohumeral joint (GH). The convex – concave rule states that during typical joint motion‚ a moving bone turns around a stable bone. The non-moving bone provides stabilizing joint surface for moving bone (Foster 2013‚ p. 59). In reference to the arthokinematics of abduction of the GH‚ “the convex humeral head rolls superior relative to the glenoid
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important stabilizer of the tibiofemoral joint. The ACL has a proximal attachment on the posteromedial portion of the lateral condyle of the femur and creates an anterior medial vector to reach its distal attachment at the anteromedial tibia. The anteromedial vector the ACL makes allows it to prevent primarily anterior translation of the tibia on the femur and secondarily tibial rotation subluxation on the femur and both valgus and varus forces at the tibiofemoral joint. In the United States‚ there are 200
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Radiologic case study A male patient of approximate mid 50’s in age went to the doctor with severe tenderness‚ swelling and pain in his left knee after falling down stairs and twisting his knee. The doctor found there was noticable swelling. An MRI (magnetic resonance imaging) showed the back side corner of the knee to be intact but also did show thickening of the ligament located on the outer side of the knee. The MRI shows an oval abnormality that ran alongside of the ligament. However‚ MRI
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BALL-AND-SOCKET JOINT 1 The Ball-and-Socket Joint HCS/230 January 10‚ 2011 Dr. Mike Liang THE BALL-AND-SOCKET JOINT 2 The Ball-and-Socket Joint Joints are essential in allowing movement of the human body. They are located at the intersection of bones‚ and their structures determine the type of movement that will occur at that location. Each joint contains components
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Osgood–Schlatter disease or syndrome (also known as tibial tubercle apophyseal traction injury) is an irritation of the patellar ligament at the tibial tuberosity. Sinding–Larsen–Johansson syndrome is an analogous condition involving the patellar tendon and the lower margin of the patella bone‚ instead of the upper margin of the tibia. The condition occurs in active boys and girls aged 9–16 coinciding with periods of growth spurts. It occurs more frequently in boys than in girls‚ with reports of
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network of tissue. Bones give us form. In sports support and shape are also used for example in a rugby scum‚ to body needs to be placed in such a way to keep the back aligned. Movement/ Attachment: The skeleton is jointed to allow movement. A joint is an articulation of two or more connecting bones‚ providing us with either stability or movement. Muscles are attached to our bones by tendons‚ and ligaments attach bone to bone. Movement is very important to any sports it allows us to make
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Task: Write a report Select three joints. Shoulder Joint (Ball and Socket) Elbow Joint (Hinge) Wrist Joint (Condyloid) Discuss the description of the movement at each joint action for the ideal performance of the over hand volleyball serve. Ball and Socket: When preparing for a volleyball serve‚ the right shoulder joint is primarily used. The shoulder joint is a third class lever operating on the humorous bone‚ which is held in place by the clavicle bone and scapula. These three
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metacarpal of the thumb and the other part inserting on the falciform bone‚ the tendon to the falciform bone is the larger of the two. Between the dorsal surface of the falciform bone and the palmar surface of scapholunate‚ there is an arthrodial joint. The falciform is connected to the styliform cartilage on the opposite side of the wrist by a
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which attaches the top of the humours to the glenoid socket. Too much stress or throwing the ball incorrectly can lead to partial tears and also swelling in the tendons. (FIGURE 4) In the wind up the force causes the hip‚ ball and socket joint‚ and knee‚ synovial joint‚ flexion. The hamstring and gluteus maximus cause the movement and the quadriceps is the antagonist muscle‚ at this stage the pitcher has one leg in the air‚ his centre of gravity and his line of gravity is directly over his back foot
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three main ones). Wednesday 4th and 5th period: 1. Distinguish between spongy and compact bone in your long bones. 2. How would you define bone? 3. Explain how a joint is formed. 4. Distinguish between a ligament and a tendon. 5. Name the three types of joints and give three examples of each. 6. Explain what a synovial joint looks like and draw it from the Concise Biology Text. (Do not email me the drawing unless you have technology to take a picture of what you drew). Thursday 6th and
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