1/30. Medical check of competitive canoeists.We gave a sports injury questionnaire survey to 821 active canoeists, members of the japan Canoe association (JCA), and performed a medical check of 63 top competitive JCA canoeists, including physical and laboratory tests and radiographic examinations of the chest, spine, shoulder, elbow, and wrist joints. Completed questionnaires were returned by 417 canoeists, whose reported racing styles were: kayak, 324; Canadian canoe, 71; slalom, 13; and not specified, 9. Of the 417 respondents, 94 canoeists (22. 5%) reported that they experienced lumbago; 20.9% experienced shoulder pain; 3.8%, elbow pain; and 10.8%, wrist pain. On medical examinations, lumbago was found to be mainly of myofascial origin or due to spondylolysis. Impingement syndrome was also observed in 4 canoeists with shoulder problems. The competitive canoeists had low blood pressure, and some had bradycardia. On laboratory examinations, serum hemoglobulin, hematocrit, high-density lipoprotein cholesterol (HDL-CHO), creatine phosphokinase (CK), and creatine (CRTN) in the top competitive canoeists showed high values in comparison with those of an age-matched control group. However, low serum total cholesterol (TP) values were observed in the top competitive canoeists.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
2/30. Mononeuropathy of the medial branch of the deep peroneal nerve in a scuba diver.Peripheral mononeuropathies occur only rarely in association with decompression illness. The sites previously reported to be affected are areas of potential entrapment in which a peripheral nerve traverses a confined area. In these instances, the pathophysiology has been presumed to be mechanical pressure in an enclosed space by a gas bubble. A rare case is now presented of a peripheral mononeuropathy of the medial branch of the deep peroneal nerve in a scuba diver following surfacing from a 195 foot dive. This case differs from prior reports of mononeuropathy in association with decompression illness in that the affected nerve does not traverse a confined site in which mechanical compression by a gas bubble is likely. The mechanism of injury is hypothesized to be a manifestation of decompression illness with a gas bubble causing blood flow obstruction and an ischemic infarct.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
3/30. Compartment pressure monitoring during anterior cruciate ligament reconstruction.A prospective double blind randomized study was carried out using 20 healthy males with anterior cruciate ligament (ACL) insufficiency undergoing bone-patellar tendon-bone ACL reconstruction. The subjects were randomized into either water or saline irrigation and then underwent identical reconstructive procedures using an arthroscopic pump. Continuous preoperative, intraoperative, and postoperative pressures were monitored using the slit catheter technique. blood pressure and compartment pressure measurements were continuously recorded and noted at all stages of the procedure. Mean preoperative anterior and posterior compartment pressures were similar in both groups. No significant differences were noted between the anterior and posterior compartments of each group. No difference between water and saline irrigation was identified throughout the procedure. In both groups, postoperative pressures were slightly lower in the anterior and posterior compartments compared with preoperative pressures, but not significantly.- - - - - - - - - - ranking = 10keywords = pressure (Clic here for more details about this article) |
4/30. Henoch-Schonlein purpura with thoraco-lumbar spine involvement precipitated by trampoline jumping.A nine-year-old boy with Henoch-Schonlein purpura (HSP) presented with an arthropathy of the thoraco-lumbar spine. The boy played on a trampoline for several days before the onset of the low-back pain. The vascultic rash of HSP is recognized to be pressure-dependent. The authors speculate that the arthropathy of HSP is also pressure-dependent and that the low back pain in this patient was consequent to the preceding trampoline jumping.- - - - - - - - - - ranking = 2keywords = pressure (Clic here for more details about this article) |
5/30. Bilateral epiphyseal fractures of the proximal tibia within a six-month interval: a case report.An epiphyseal fracture commonly results from avulsion of the epiphysis by traction through the attached ligaments. A fracture of the proximal tibial epiphysis is, therefore, a rare injury because of the absence of collateral ligament attachments. Most proximal tibial epiphyseal injuries occur as avulsion fractures of the tibial tubercle; Salter-Harris Types I or II injuries involving pressure epiphyses are rare. In the current case of a thirteen-year-old boy, the proximal tibial epiphyseal injuries in both knees occurred during quadriceps contraction in the absence of violent trauma, and there was a six-month interval between the two injuries.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
6/30. Neurologic complications of sit-ups associated with the valsalva maneuver: 2 case reports.We present 2 cases of potentially catastrophic neurologic consequences occurring in healthy individuals engaged in sit-up exercises. Two young healthy men were engaged in sit-ups when one developed a stroke and the other developed a spinal epidural hematoma. The valsalva maneuver involved in the sit-up exercise can produce supraphysiologic increases in blood pressure, which can lead to vascular injury and serious neurologic consequences. Proper breathing should be encouraged and patients with known predisposing factors should avoid such exercises. Prompt recognition of neurologic signs and symptoms during exercise can be life saving. This is the first report of the neurologic complications of sit-ups.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
7/30. Umbilical and bilateral inguinal hernias in a veteran powerlifter: is it a pressure-overload syndrome?Umbilical, inguinal and hiatal hernias are all thought to occur from basically the same etiology, a malformation in the tissue leading to herniation. The mechanisms for these malformations range from congenital to degenerative. Earlier studies proposed that hiatal hernias result from age-related degenerative changes in the phrenoesophageal ligament leading to subsequent herniation. We found that hiatal hernias occur in young power athletes secondary to intra-abdominal pressure overload of the phrenoesophageal ligament. We present a case of umbilical and bilateral inguinal hernias occurring in a veteran powerlifter. The pathogenesis of multiple hernias and the physiological pressure systems involved in the development of multiple hernias in a power athlete are discussed.- - - - - - - - - - ranking = 6keywords = pressure (Clic here for more details about this article) |
8/30. Compartment pressures after closed tibial shaft fracture. Their relation to functional outcome.We measured pressures in the anterior and deep posterior compartments continuously for up to 72 hours in 20 patients with closed fractures of the tibial shaft treated primarily in plaster casts. All were examined independently after periods of three to 14 months. Pressures above 40 mmHg occurred in seven (35%) and above 30 mmHg in 14 (70%). No patient had the symptoms of compartment syndrome during monitoring. Abnormalities at review did not correlate with the maximum consecutive time periods during which the compartment pressures were raised. Thus, in the absence of symptoms the monitored pressures did not relate to outcome. Routine monitoring in this type of patient is therefore of doubtful benefit.- - - - - - - - - - ranking = 7keywords = pressure (Clic here for more details about this article) |
9/30. Intrarectal tear from water skiing.We report a case of intrarectal tear and hemorrhage after a fall while water skiing. The injury resulted from rectal douche, or jet enema, which is dangerous because of the high pressure of the water jets forced into the rectum. The patient, a middle-aged woman, had colonoscopy, which revealed a deep rectal laceration. During subsequent colostomy, a full-thickness laceration and an extensive pelvic and retroperitoneal hematoma with some free blood were found. The patient's recovery was uneventful, and she subsequently had reanastomosis of her colostomy. We recommend protective apparel to prevent these injuries.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
10/30. adult medial orbital wall trapdoor fracture with missing medial rectus muscle.We report the case of a 28-year-old man presenting with a medial orbital wall trapdoor fracture with a missing medial rectus muscle. We believe this to be the first case report of an adult medial orbital wall trapdoor fracture. Trapdoor fractures most commonly occur in the pediatric population, and those involving the medial orbital wall generally occur in areas with less developed ethmoid air cells. Since the present case followed neither pattern, a different injury mechanism was considered. The ethmoid air cells in this case were well developed, which may have played an important role in the pathogenesis of this adult medial orbital wall trapdoor fracture. Based on our findings, we propose a possible mechanism for a medial orbital wall trapdoor fracture in an adult. The cellular frames enable the medial bone to shift just minimally, regardless of the high orbital pressure during a blow. The excess volume of the orbital content escapes into the cells through narrow cracks; therefore, after a blow, it cannot move back completely into the orbit. Consequently, it pushes the shifted bone towards the orbit, becoming trapped in a manner similar to that of a check-valve mechanism.- - - - - - - - - - ranking = 1keywords = pressure (Clic here for more details about this article) |
| | Next -> |