| hook of hamate bone | A hooklike process on the distal and medial part of the palmar surface of the hamate bone. Synonym: hamulus ossis hamati. (05 Mar 2000) |
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| calvarial hook | An instrument used in prying off the top of the skull after it has been sawed around, at autopsies and dissections. (05 Mar 2000) |
| palate hook | An instrument for pulling forward the soft palate in order to facilitate posterior rhinoscopy. (05 Mar 2000) |
| hook | Basal portion of bacterial flagellum, to which is distally attached the flagellin filament. Proximally the hook is attached to the rotating spindle of the motor. In some bacteria (Myxobacteria) the rotation of the hook itself (without an attached flagellum) may directly cause forward gliding movement. (18 Nov 1997) |
| hook-billed | <zoology> Having a strongly curved bill. Source: Websters Dictionary (01 Mar 1998) |
| hook of spiral lamina | The upper hooklike termination of the bony spiral lamina at the apex of the cochlea. Synonym: hamulus laminae spiralis, hamulus cochleae, hook of spiral lamina. (05 Mar 2000) |
| hook-shaped cataract | Congenital cataract with hook-like figures between the foetal and embryonic nuclei. (05 Mar 2000) |
| sliding hook | A movable attachment used on an orthodontic wire for the application of elastic traction or headgear force. (05 Mar 2000) |
| squint hook | A surgical instrument used to lift ocular muscles. (05 Mar 2000) |
| tracheotomy hook | Right-angled hook used in holding the trachea steady during tracheotomy. (05 Mar 2000) |
| bone within a bone | <radiology> STOP heavy metal, S: sickle cell disease, T: Thorotrast, O: osteopetrosis, P: Paget's disease, heavy metals, hypervitaminosis D (12 Dec 1998) |
| acute reflex bone atrophy | Atrophy of bones, commonly of the carpal or tarsal bones, following a slight injury such as a sprain. See: causalgia, reflex sympathetic dystrophy. Synonym: acute reflex bone atrophy, posttraumatic osteoporosis, Sudeck's syndrome. Origin: L. English sweat (05 Mar 2000) |
| air-bone gap | The difference between the threshold for hearing acuity by bone conduction and by air conduction. (05 Mar 2000) |
| Albrecht's bone | A small bone between the basioccipital and basisphenoid. (05 Mar 2000) |
| allogeneic bone marrow transplant | <haematology, procedure> A bone marrow transplant using marrow collected from a matched healthy donor, usually a brother or sister. The risks associated with the transplant increase with age and 50 years of age is generally regarded as the upper limit. (13 Nov 1997) |