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The bulbocavernosus reflex (bcr), bulbospongiosus reflex (bsr) or osinski reflex is a polysynaptic reflex that is useful in testing for spinal shock and gaining information about the state of spinal cord injuries (sci). Bulbocavernosus is an older term for bulbospongiosus, thus this reflex may also be referred to as the bulbospongiosus reflex. The bulbocavernosus reflex (bcr), bulbospongiosus reflex (bsr) or osinski reflex is a polysynaptic reflex that is useful in testing for spinal shock and gaining information about the state of spinal cord injuries (sci). Bulbocavernosus is an older term for bulbospongiosus, thus this reflex may also be referred to as the bulbospongiosus reflex. If there is no anal contraction (absent bulbocavernosus reflex), indicates that the patient is still in shock and prognosis cannot be. Picture bulbocavernosus reflex diagram image source health-7. When there is a cervical or thoracic cord injury, it is likely that absence of the bulbocavernosus reflex or negative reflex would be a result and would also signify presence of spinal shock and injury. We have described an intraoperative method for recording the bulbocavernosus reflex from the anal sphincter muscle, with improvement in methodology reported by others. 9294 the advantage of bulbocavernosus reflex monitoring is that it tests the functional integrity of the three different anatomic structures the sensory and motor fibers of the pudendal nerves and the gray matter of the s2. Bulbocavernosus reflex refleks a reflected action or movement the sum total of any particular automatic response mediated by the nervous system. A reflex is built into the nervous system and does not need the intervention of conscious thought to take effect. California the bulbo cavernosus reflex is often used in neurological and urological examinations to test the integrity of the. A finger is placed in the anal canal while an assistant gently compresses the glans penis or clitoris. Bulbocavernosus reflex in normal men and in patients with neurogenic bladder andor impotence. A response from the external anal sphincter was obtained in only 21 of the subjects investigated. The bulbospongiosus muscle (bulbocavernosus in older texts) is one of the superficial muscles of the perineum. It has a slightly different origin, insertion and function in males and females. The anal wink, anal reflex, perineal reflex, or anocutaneous reflex is the reflexive contraction of the external anal sphincter upon stroking of the skin around the anus. A noxious or tactile stimulus will cause a wink contraction of the anal sphincter muscles and also flexion. The stimulus is detected by the nociceptors in the perineal skin to the pudendal nerve, where a response is. Author information (1)spinal unit, centre calve, fondation hopale, berck-sur-mer, france. The bcr consists of the contraction of the bulbocavernosus muscle in response to squeezing the glans penis or clitoris, and is mediated through the pudendal nerve.