scholarly journals Letter: Preoperative Ultrasound-Guided Wire Localization of the Lateral Femoral Cutaneous Nerve

2017 ◽  
Vol 13 (3) ◽  
pp. E13-E13
Author(s):  
Amgad Hanna
Keyword(s):  
Cutaneous Nerve ◽  
Lateral Femoral Cutaneous Nerve ◽  
Wire Localization ◽  
Ultrasound Guided ◽  
Preoperative Ultrasound ◽  
Femoral Cutaneous Nerve

scholarly journals Preoperative Ultrasound-Guided Wire Localization of the Lateral Femoral Cutaneous Nerve

2016 ◽  
Vol 13 (3) ◽  
pp. 402-408 ◽  
Author(s):  
Amgad S. Hanna ◽  
Mark E. Ehlers ◽  
Kenneth S. Lee
Keyword(s):  
Skin Incision ◽  
Cutaneous Nerve ◽  
Lateral Femoral Cutaneous Nerve ◽  
Wire Localization ◽  
Ultrasound Guided ◽  
Meralgia Paresthetica ◽  
Experienced Surgeon ◽  
Preoperative Ultrasound ◽  
Femoral Cutaneous Nerve ◽  
Proximal Thigh

Abstract BACKGROUND: Difficulty and sometimes inability to find the lateral femoral cutaneous nerve (LFCN) intraoperatively is well known. Variabilities in the course of the nerve are well documented in the literature. In a previous paper, we defined a tight fascial canal that completely surrounds the LFCN in the proximal thigh. These 2 factors sometimes render finding the nerve intraoperatively, to treat meralgia paresthetica, very challenging. OBJECTIVE: To explore the use of preoperative ultrasound to minimize operative time and eliminate situations in which the nerve is not found. METHODS: Since 2011, we have used preoperative ultrasound-guided wire localization (USWL) in 19 cases to facilitate finding the nerve intraoperatively. Data were collected prospectively with recording of the timing from skin incision to identifying the LFCN; this will be referred to as the skin-to-nerve time. RESULTS: In 2 cases, the localization was incorrect. In the 17 cases in which the LFCN was correctly localized, the skin-to-nerve time ranged from 3 min to 19 min. The mean was 8.5 min, and the median was 8 min. CONCLUSION: Preoperative USWL is a useful technique that minimizes the time needed to find the LFCN. For the less experienced surgeon, it is extremely valuable. For the experienced surgeon, it can identify anatomical abnormalities such as duplicate nerves, which may not be readily recognizable without ultrasound. Collaboration between the surgeon and the radiologist is very important, especially in the early cases.

scholarly journals Preoperative ultrasound to identify distribution of the lateral femoral cutaneous nerve in total hip arthroplasty using the direct anterior approach

SICOT-J ◽  
2018 ◽  
Vol 4 ◽  
pp. 42 ◽  
Author(s):  
Yu Ozaki ◽  
Tomonori Baba ◽  
Yasuhiro Homma ◽  
Hiroki Tanabe ◽  
Hironori Ochi ◽  
...  
Keyword(s):  
Proximal Femur ◽  
Anterior Approach ◽  
Direct Anterior Approach ◽  
Cutaneous Nerve ◽  
Lateral Femoral Cutaneous Nerve ◽  
Preoperative Ultrasound ◽  
Femoral Cutaneous Nerve ◽  
Direct Injury ◽  
Radial Spreading ◽  
Tensor Fasciae Latae

Introduction: Recently, the branching pattern of the lateral femoral cutaneous nerve (LFCN) named Fan type has been reported that LFCN injury cannot be avoided in surgical dissections that use the direct anterior approach to the hip joint in the cadaveric study. We hypothesized that the Fan type can be identified by ultrasound The aim of this study was to investigate whether LFCN injury occurs in DAA-THA in cases identified as the Fan type based on preoperative ultrasound of the proximal femur. Methods: Ultrasonography of the proximal femur on the surgical side was performed before surgery and the LFCN distribution was judged as the Fan type or Non-Fan type. A self-reported questionnaire was sent to the patients at two months after surgery, and the presence or absence of LFCN injury was prospectively surveyed. Results: After application of exclusion criteria, 45 hips were included. LFCN injury was observed after surgery in 9 of the 10 patients judged as the Fan type based on the ultrasound of the proximal femur (positive predictive value: 90%), and no LFCN disorder was actually observed in 25 of the 26 patients judged as Non-Fan type (specificity: 96.2%). Conclusions: To prevent injury of the LFCN in patients judged as the Fan type on the ultrasound test before surgery, the risk of direct injury of the LFCN may be reduced through the approach in which an incision is made in the fascia which is opposite to the radial spreading, i.e., between the sartorius and tensor fasciae latae muscles or slightly medial from it.

scholarly journals Ultrasound-Guided Lateral Femoral Cutaneous Nerve Conduction Study

2015 ◽  
Vol 39 (1) ◽  
pp. 47 ◽  
Author(s):  
Bum Jun Park ◽  
Eui Soo Joeng ◽  
Jun Kyu Choi ◽  
Seok Kang ◽  
Joon Shik Yoon ◽  
...  
Keyword(s):  
Nerve Conduction Study ◽  
Nerve Conduction ◽  
Cutaneous Nerve ◽  
Lateral Femoral Cutaneous Nerve ◽  
Ultrasound Guided ◽  
Femoral Cutaneous Nerve
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