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Lateral femoral cutaneous nerve: an anatomic study
Matthew C Grothaus1, Marston Holt, Anis O Mekhail
1Department of Orthopaedic Surgery, Medical College of Ohio, Toledo, 43614, USA.
Clinical Orthopaedics and Related Research
|August 2, 2005
Summary
This study maps the lateral femoral cutaneous nerve
Area of Science:
- Anatomy
- Surgical anatomy
Background:
- The lateral femoral cutaneous nerve (LFCN) is crucial for sensation in the anterolateral thigh.
- Iatrogenic injury to the LFCN can lead to persistent pain and numbness.
- Precise anatomical knowledge is needed to prevent surgical complications.
Purpose of the Study:
- To precisely locate the LFCN and its branches near the inguinal ligament and thigh.
- To establish anatomical measurements for identifying a "danger zone" to prevent LFCN injury.
- To analyze the variability in LFCN course and branching patterns.
Main Methods:
- Cadaveric dissection of 29 specimens.
- Measurement of LFCN distances from anatomical landmarks.
- Documentation of nerve branching patterns.
Main Results:
- Significant variability observed in LFCN course and branching.
- LFCN identified at risk up to 7.3 cm medial to the anterior superior iliac spine (ASIS).
- Nerve branches found up to 11.3 cm distal to the ASIS on the sartorius muscle.
- LFCN branched before the inguinal ligament in 27.6% of cases.
Conclusions:
- A defined "danger zone" for the LFCN has been identified.
- This anatomical data can guide surgical procedures to minimize LFCN injury risk.
- Understanding LFCN variability is key for preventing iatrogenic complications.