Danielle Wagner Kinesiology Biomechanics Project Outline Analyzing Motion: A Knee during Jumping/Cutting of a Female Soccer Player Intro: The anterior cruciate ligament (ACL) is one of the most common‚ severe‚ and devastating knee injuries in men and women in both contact and non-contact sports. Within the past 20-303 years the prevalence of ACL tears has been noted more significantly in the female athlete. Females were two times as likely to have ACL injuries as a result of player contact
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One movement is the rotating of the femur so that the acetabulum is positioned toward the direction of approaching femoral movement. Another is the posterior pelvic tilt‚ when the anterior superior iliac spine is tilted backward‚ it position the head of the femur in front of the hipbone to enable flexion. Lastly‚ anterior pelvic tilt enables femoral extension‚ and lateral pelvic tilt toward the opposite side facilitates lateral movements of the femur. Movement of the pelvic girdle also coordinates
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tendons: attach the hamstring muscles to the tibia * Calf tendons: attach the calf muscles to the femur Knee Ligaments Strong fibrous bands‚ called ligaments‚ support the knee. Injuries to the knee ligaments are common. The knee ligaments include: * Lateral collateral ligament: stabilizes the knee from stress applied to the sides of the knee * Medial collateral ligament: stabilizes the knee from stress applied to the sides of the
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is the tunnel filled in to produce a new osteon? Production of concentric lamellae fills in the tunnel to form new osteon 5. What is the name for the concentric rings that form the osteon? lamellae * * * Exercise 5.3: Skeleton‚ Anterior View * A. skull . B. Hyoid bone . C. Cervical vertebrae
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professional‚ or the common fan who picks it up‚ playing soccer could result in several devastating injuries such as‚ a torn anterior cruciate ligament (ACL)‚ stress fractures‚ and concussions‚ which all have negative effects on a player’s performance. One hazard to soccer players is a risk of a torn anterior cruciate ligament‚ also called the ACL. The ACL is a ligament that connects the thigh bone to the shin bone. A tear of the ACL is caused by the sudden twisting or jerking motion‚ like the
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spindle. Ligaments in Knee: In general‚ ligaments are the structures that connect bone to bone around a joint by connective tissues. The ligaments in the knee are used to stabilize as well as support it when there is different kind of movement involving different positions. There are four different ligaments in the knee and they are 1. Medial collateral ligament: It limits the amount of side to side movement of the knee. When there is a force which is headed outer side of the knee‚ this ligament helps
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of one bone is continuous with the periosteum of the other. • Sutural ligament: two periostea plus dense‚ fibrous‚ connective tissue between. • In adults may ossify completely: synostosis. • Fontanels: membranous areas in the suture between bones. Allow change in shape of head during birth and rapid growth of the brain after birth. 8-5 Fibrous Joints: Syndesmoses • Bones farther apart than suture and joined by ligaments • Some movement may occur • Examples: radioulnar (interosseus membrane)
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Module 06 Case Study: Articulations and Nerve Tissue Part I— “Jill” Questions 1. What is the difference between a tendon and ligament? (1 point) --The difference between a tendon and a ligament is that a tendon attaches to muscle. (ie. muscle-bone‚ muscle-muscle‚ muscle- skin) A ligament‚ however‚ attaches to cartilage. (ie. cartilage-bone‚ cartilage-cartilage‚ bone-bone) 2. What bones form the articulation (joint) of the ankle? Did Jill most likely sprain or strain her ankle? Explain your
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sutures ossify and fuse 1. Called Synostoses 2. Syndesmoses 1. Bones connected by ligaments (bands of fibrous tissue) 2. Fiber length varies so movement varies‚ i.e.‚ 1. Little to no movement at distal tibiofibular joint 2. Large amount of movement at interosseous membrane connecting radius and ulna 3. Gomphoses 1. Peg-in-socket joints of teeth in alveolar sockets 2. Fibrous connection is the periodontal ligament 5. Cartilaginous Joints 1. Bones united by cartilage 2. No joint cavity 3
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-Nucleus Pulposus—central gelatinous‚ pulpy substance (jelly) Functional Moveable Segment -2 vertebrae -4 facets (2 facet joints‚ superior and inferior) -1 disc Facet Joints -Planar Joints (Each facet joint is a synovial joint) -Anterior glide with neck flexion -Posterior glide with neck extension (Superior segment moves on inferior segment—concave on convex‚ same direction) Orientation of the Facets -Cervical—sagittal plane (Flexion/Extension) -Rotation at C-spine is
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