Structure and Function of the Musculoskeletal System
Jennifer belongs to a women’s rugby team. At 23 years old, she has been playing for five years and trains daily to keep up her strength and stamina. During one game, she was injured. Unable to walk, she was carried off the field supported by her coach and an athletic therapist. At the hospital, after an examination and MRI of her right knee, she was given her diagnosis. Jennifer suffered what is often termed the “O’Donoghue triad”: a ruptured medial collateral ligament, a ruptured anterior cruciate ligament, and tear of the medial meniscus.
Case Study 2
Disorders of Musculoskeletal Function: Trauma, Infection, Neoplasms
Marvin is a healthy, active 36-year-old who belongs to a martial arts club. Once a week he takes lessons in Judo, and on the weekends, he participates in local competitions. At his last competition, Marvin was paired with a skilled participant from another club. His rival threw him to the mats, and as Marvin struggled, came down hard to pin him down. Marvin heard a snap, followed by instant pain in his left forearm. Radiographs at the local hospital confirmed he suffered a transverse fracture of the distal aspect of his left ulna.
Case Study 3
Disorders of Musculoskeletal Function: Developmental and Metabolic Disorders
Mandy is a 16-year-old competitive figure skater who practices several hours a day with her coach at the skating arena. Because of her extremely active lifestyle and restricted diet to maintain her athletic physique, she experiences ongoing amenorrhea. One day during practice, she landed a jump and fell to the ice in pain. Her left foot swelled up almost immediately, making it difficult for her coach to remove the skate. At the hospital, radiographs revealed a fracture of the fifth metatarsal bone and general radiolucency of all the bones in her foot. A follow-up DXA revealed a bone mass of 2.7 standard deviations below mean.
Case Study 4
Disorders of Musculoskeletal Function: Rheumatic Disorders
Rick is a 27-year-old who works in an accounting firm. He had started to experience lower back pain and stiffness that he thought were a result of the long hours he spent at his desk. More recently, however, he began to have sleep difficulties. He found that he often woke up during the night feeling hot and sometimes sweaty. Furthermore, his back pain disrupted his sleep, particularly when it radiated around his pelvis and into his thighs. When his lack of sleep began to interfere with his work, he went to an osteopath to see what was wrong. She listened to his case history carefully. Upon physical examination, she noted a slight decrease in his lumbar lordosis and a reduced range of movement in his lumbar spine. His blood tests revealed the presence of HLA-B27, an elevated ESR, and absence of RH. His radiograph showed evidence of sacroiliitis.
Case Study 5
Structure and Function of the Skin
Yael is an 18-year-old college student who is bothered by excessive perspiration. She knew she sweat a lot under her arms and kept antiperspirant in her schoolbag to use throughout the day. Yael’s problem was not limited to under her arms, however. Her hands and feet also perspired heavily, and it embarrassed her. She did not like holding her boyfriend’s hand if her hands were particularly sweaty, and she had problems grasping her pen while in class because her palm became slippery. Yael suffered from a condition called primary focal hyperhidrosis, a condition involving hyperactive sweat glands in certain areas of the body.
Case Study 6
Disorders of Skin Integrity and Function
Leonard works in the agriculture industry and raises beef cattle. At 60 years of age, he has spent most of his life working outdoors harvesting hay and tending to his herds. His wife was the first to notice a change in his skin. One day, after taking off his shirt, she noticed a significant change in the mole he had on his right shoulder. It not only was darker but was moist and appeared to have been bleeding at one point. Surrounding the mole, his skin was red. His wife remembered hearing stories of Leonard working on his father’s farm, spending long hours out in the hot sun even though his father had gone into the barn to work during the hottest part of the day. She insisted him go to the family physician to have it examined.
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