Chinese Journal of Clinical Anatomy ›› 2024, Vol. 42 ›› Issue (6): 649-654.doi: 10.13418/j.issn.1001-165x.2024.6.07

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Anatomical morphologic classification of the peroneal trochlea on the calcaneus and its clinical significance

Zhang Lei1,2,3, Chen Xu4, Chen Xueyi5, Wu Wangyu6, Xiong Bin5, Shi Houyin1,2,3, Wang Guoyou1,2,3*   

  1. 1. Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou 646000, Sichuan Province, China; 2. Center for Orthopedic Diseases Research, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou 646000, Sichuan Province, China; 3. Luzhou Key Laboratory of Orthopedic Disorders, Luzhou 646000, Sichuan Province, China; 4. Department of Pediatrics, Southwest Medical University, Luzhou 646000, Sichuan Province, China; 5. School of Clinical Medicine, Southwest Medical University, Luzhou 646000, Sichuan Province, China; 6.School of Traditional Chinese and Western Medicine, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Revised:2024-01-19 Online:2024-11-25 Published:2024-12-16

Abstract: Objective    To investigate the morphological classification of the peroneal trochlea, and to explore its clinical significance.   Methods    From July 2014 to February 2023, 215 people were included in this retrospective study, which was provided by Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University. The peroneal trochlea was classified according to its morphology and the height, length, relative position to the surrounding structures and the excision angle were measured, respectively.   Results   The calcaneus of 166 (77.2%) cases showed peroneal trochlea. The morphology of the peroneal trochlea could be divided into 4 types: flat type in 12 cases (7.2%), conicalness type in 73 cases (44.0 %), straight ridge type in 74 cases (44.6%), and olecranon-type in 7 cases (4.2%). There was no statistical significancein height and distance from the midpoint of peroneal trochlea to posterior surface of calcaneus between genders (P>0.05). The height of straight ridge type and olecranon-type were significantly higher than that of the conicalness type (P<0.05). Meanwhile, the height of conicalness type was significantly higher than that of the flat type (P<0.05). The length of conicalness type was significantly shorter than that of other types (P<0.05). The distance between the midpoint of peroneal trochlea and the fifth metatarsal tuberosity and the lateral midpoint of calcaneocuboid articular surface of conicalness type was significantly longer than that of straight ridge type (P<0.05). The distance between the midpoint of peroneal trochlea and the posterior surface of calcaneus of conicalness type was significantly shorter than that of straight ridge type (P<0.05).   Conclusions    This study provides further information on the classification, size and location of the peroneal trochlea, which may present anatomical basis for clinical diagnosis and treatment of hyperplastic peroneal trochlea, to avoid blind resection of the peroneus tendon injury.

Key words: Peroneal trochlea,  ,  , Anatomic morphology,  ,  , CT

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