What's the difference between trepanation and trephining?
Trepanation
Definition:
Example Sentences:
(1) The automatic half of both the motor which advances the trepan as well as the second motor which rotates the trepan is triggered by the sudden change in electrical resistance between the trepan and the patient's internal body fluid, at the final stage of penetration.
(2) Labyrinthine trepanation was performed in the majority of 16 patients with minor agenesis of middle ear involving either stapedovestibular ankylosis or absence of fenestra vestibuli.
(3) The introduction of a new motorized trepan in ophthalmic surgery by Arthur v. Hippel in 1891 was a very important achievement.
(4) Already Hippocrates recommended decompression-trepanation for the treatment of hydrocephalus.
(5) Borings with rose trepans without cooling fluid cause sometimes considerable heat lesions up to a depth of 30 mu.
(6) The method of choice for the treatment was the osteoplastic trepanation with a removal of the haematoma.
(7) A second similar observation was made in a 15 year old male, trepanated because of an epidural abscess.
(8) Surgical techniques were those of Mackensen (1972), the trap-door technique, and a trepanation of the sclerocornea with regrafting.
(9) Resection trepanation of the skull was carried out in 55 patients, osteoplastic in 23.
(10) It can be demonstrated that because of the stress on the femur and its mechanical characteristics (material distribution, density distribution, breaking strength, "structure" strength and the histological structure), a lateral trepanation of the femoral corticalis is weakening the bone in its mechanically most stressed part whereas an anterior fenestration is mechanically much better.
(11) Before trepanation they received infiltration anaesthesia of the scalp at the site of the proposed operation.
(12) The surgical removing of the apical part of the implant with the use of a Trepan bur made it possible to examine and visualize histologically and microradiographically the tissue adjacent to the implant.
(13) Due to these observations, Perier had suggested to treat deafness by trepanation.
(14) Investigations of the French physician Perier on patients after a trepanation of their skulls have shown that talking can be understood in the case of hermetically closed ears by means of the trepanation scar.
(15) Since skin problems as decubitus and infections are well known risks in osteoplastic trepanations in congenital malformations in children, we searched for a reduction in size of the implants and the possibility to use biodegradable materials.
(16) This case shows that the value of angiography for the diagnosis of brain death may sometimes be limited, at least in those cases in which osteoclastic trepanation has been performed or there are other causes for a skull defect, because they can prevent the rise of intracranial pressure which brings about the cerebral circulatory arrest.
(17) After osteoclastic trepanation 45 patients were investigated with ultrasonic tomography.
(18) This is effected by the ability to change the penetration angle of the electrode or by choosing a different point of trepanation.
(19) During trepanation a macroscopically typical finding of Sturge-Weber-syndrome could be demonstrated (angioma capillare et venosum) covering almost the entire right posterior hemisphere.
(20) Since the bone meal is usually obtained during trepanation, bone biopsies of other body regions are unnecessary.
Trephining
Definition:
(p. pr. & vb. n.) of Trephine
Example Sentences:
(1) Specimens from the bone marrow taken were by trephine biopsy from the sternum, ala ossis ilii and spine.
(2) The routine study of bone marrow trephine biopsies involves fixation, decalcification, paraffin-embedment, sectioning and staining.
(3) This correction improved the S-phase cell estimate from aspirated marrows, and the corrected values were not significantly different from values from paired trephine samples.
(4) Forty-five percutaneous trephine lung biopsies using the Steel apparatus were performed on 38 patients.
(5) A retrospective study was performed to evaluate the effect of recipient-donor trephine disparity on refractive error and corneal curvature post-suture removal in keratoconus.
(6) This instrument, a modification of a corneal trephine, provides a neat, smooth groove of adjustable depth.
(7) Trephination dates from prehistoric neolithic times (10,000-7000 B.C.)
(8) Forty-six patients were examined in a prospective, randomized clinical study to compare the use of the same size trephine on both donor and recipient with the use of a 0.5-mm larger trephine on the donor in aphakic keratoplasty and in keratoplasty combined with lens extraction.
(9) All patients had a trephine biopsy of the bone marrow and entered this study without prior selection.
(10) Meticulous handling of the graft (using a Goeller trephine and Tenon's traction sutures), filleting Tenon's capsule and avoiding cautery of the graft bed may minimize graft necrosis and atrophy.
(11) With the use of a guide box of plexiglas screwed into a trephine of the calvarium, several thermocouples could be inserted at various depths into the brain at the same time.2.
(12) In the control contralateral trephines, one-third to one-half of the defect was incompletely repaired.
(13) In a series of 20 human autopsy and 40 pig cadaver eyes the histological and ultrastructural results of donor and recipient trephination and full-thickness corneal grafting using new mask systems were evaluated.
(14) The use of a small trephine for chalazion surgery or tarsal biopsy is described.
(15) In this laboratory study, we used five different corneal trephines on 60 fresh human donor eyes with controlled intraocular pressure to study the variation in the size and shape of the trephine openings.
(16) One horizontal hole from the peripheral vasculature to one of the artificial longitudinal injuries to both medial menisci of the knee in each dog was made with a needlelike trephine.
(17) Three types of Berger's early investigations are described: (1) String-galvanometer recordings obtained between 1924 and 1926, mainly from trephined patients with cerebral diseases, which usually showed brain waves slowed to 6--8 per second; (2) Direct recordings from the cortex and white matter proving the cortical origin of the EEG in 1930; (3) Typical unpublished EEG recordings of epileptics and of petit-mal attacks obtained in 1930 and 1931.
(18) No complications of infection, osteomyelitis, or major nail deformities occurred in any patients treated by nail trephination, regardless of SUH size or presence of fracture.
(19) Tumour infiltration was also suggested in four of 10 staging procedures with suspicious trephine specimens, but in none of three with relatively innocent histological and cytological features.
(20) Seventy-two adult Sprague-Dawley rats each received bilateral 8-mm trephine defects in the temporoparietal area; this defect size precludes spontaneous osseous healing during the lifetime of the animal.