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Intramuscular innervation of the tensor fasciae latae: Application to total hip arthroplasty

 Seonui Choi  ;  Hun-Mu Yang  ;  Tae-Hyeon Cho  ;  In-Seung Yeo  ;  Sung-Yoon Won 
 CLINICAL ANATOMY, Vol.36(8) : 1089-1094, 2023-11 
Journal Title
Issue Date
Arthroplasty, Replacement, Hip* / methods ; Buttocks / innervation ; Cadaver ; Hip ; Hip Joint / innervation ; Humans ; Muscle, Skeletal / innervation ; Thigh / surgery
arthroplasty ; innervation ; muscular atrophy ; rehabilitation
The aims of this study were to clarify the extra- and intramuscular branching patterns of the tensor fasciae latae (TFL) with reference to surface landmarks on the thigh and to thus suggest a safe approach for total hip arthroplasty. Sixteen fixed and four fresh cadavers were dissected and subjected to the modified Sihler's staining method to reveal the extra- and intramuscular innervation patterns, and the findings were matched with surface landmarks. The landmarks were measured from the anterior superior iliac spine (ASIS) to the patella and divided into 20 parts along the total length. The average vertical length of the TFL was 15.92 ± 1.61 cm, which was 38.79 ± 2.73% when converted to a percentage. The entry point of the superior gluteal nerve (SGN) was an average of 6.87 ± 1.26 cm (16.71 ± 2.55%) from the ASIS. In all cases, the SGN entered parts 3-5 (10.1%-25%). As the intramuscular nerve branches traveled distally, they had a tendency to innervate more deeply and inferiorly. In all cases, the main SGN branches were intramuscularly distributed in parts 4 and 5 (15.1%-25%). Most tiny SGN branches were found inferiorly in parts 6 and 7 (25.1%-35%). In three of 10 cases, very tiny SGN branches were observed in part 8 (35.1%-38.79%). We did not observe SGN branches in parts 1-3 (0%-15%). When information on the extra- and intramuscular nerve distributions was combined, we found that the nerves were concentrated in parts 3-5 (10.1%-25%). We propose that damage to the SGN can be prevented if parts 3-5 (10.1%-25%) are avoided during surgical treatment, particularly during the approach and incision.
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1. College of Medicine (의과대학) > Dept. of Anatomy (해부학교실) > 1. Journal Papers
Yonsei Authors
Yang, Hun Mu(양헌무) ORCID logo https://orcid.org/0000-0003-1954-0114
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