Pain physician
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The etiological diagnosis of painful primary total hip arthroplasty and its management is a complex clinical challenge for pain physicians. Extrinsic sources of pain in the hip joint might be efficiently treated by clinical pain units, although the topic remains controversial. ⋯ The current review suggests that painful hip arthroplasty is not a rare condition in clinical practice. We systematically reviewed etiologies and various treatments published in the literature and we suggest an algorithmic approach to management based on the available evidence. This approach incorporates the evidence regarding our knowledge of the etiologies, diagnosis, and management of chronic pain after total hip arthroplasty. Systematic review registration: The protocol was registered in PROSPERO the international prospective register of systematic reviews, ID CRD42020185663.
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Radiofrequency thermal rhizotomy demonstrates an excellent treatment outcome with a high success rate among patients of intractable trigeminal neuralgia. The triangular plexus which is an immediate retrogasserian portion of the trigeminal root is suggested as the best place of lesioning during radiofrequency thermal rhizotomy. However, the anatomy of the triangular plexus has been relatively unrecognized, while the anatomical study related to therapeutic procedure is scarce. ⋯ When an electrode tip was placed on the petroclival junction, 53% of radiofrequency thermal rhizotomy could reach the triangular plexus.
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Control of chronic pain and mainly the partial or complete loss of response to analgesics is a major unmet need. Multiple mechanisms underline the development of tolerance to analgesics in general and specifically to opioids. The autonomic nervous system (ANS) plays a role in the development of analgesic tolerance and chronobiology. ⋯ The described variability-based system may ensure prolonged effects of analgesics while reducing the toxicity associated with increasing dosages.
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Randomized Controlled Trial
A Comparison of Anesthetic Quality Between Interscalene Block and Superior Trunk Block for Arthroscopic Shoulder Surgery: A Randomized Controlled Trial.
Interscalene block is the most commonly used nerve block for shoulder surgery, and superior trunk block has been investigated as a phrenic-sparing alternative. This randomized controlled trial compared ultrasound-guided interscalene block and superior trunk block as anesthesia for arthroscopic shoulder surgery. ⋯ The superior trunk block provided lower quality of surgical anesthesia than the interscalene block and did not effectively decrease the risk of hemidiaphragmatic paralysis during arthroscopic shoulder surgery for rotator cuff syndrome.
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Herpes zoster is an acute infectious skin disease that is induced by the re-activation of the virus incubated in nerve ganglions following initial infection with varicella-zoster virus in childhood. Herpes zoster mainly affects sensory nerves, resulting in severe acute pain, which is also the most common reason for medical intervention in this patient group. The concurrent involvement of motor nerves could induce the symptoms of segmental zoster paresis, which is manifested by localized asymmetric myasthenia, whose range generally follows the distribution of myomere with skin rashes. Due to the low incidence and unspecific clinical manifestations, segmental zoster paresis has not been sufficiently recognized by clinicians, and can easily be misdiagnosed. ⋯ As the symptom in most segmental zoster paresis patients is self-limited, and the patients' prognosis is generally good, early diagnosis of the disease is especially important, due to the avoidance of unnecessary diagnostic procedures and incorrect treatments. Standard treatment guidelines regarding the functional rehabilitation are still needed for patients with refractory segmental zoster paresis.