Chinese Journal of Tissue Engineering Research ›› 2020, Vol. 24 ›› Issue (15): 2297-2302.doi: 10.3969/j.issn.2095-4344.2579

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Establishing morphological database of lower limbs for providing appropriate clinical postoperative prosthesis socket

Wu Xiaoqi, Li Ding, Huang Xuecheng, Huang Wenhua   

  1. Department of Human Anatomy, Southern Medical University, Guangzhou 510515, Guangdong Province, China
  • Received:2019-07-16 Revised:2019-07-18 Accepted:2019-09-17 Online:2020-05-28 Published:2020-03-19
  • Contact: Huang Wenhua, MD, Doctoral supervisor, Professor, Department of Human Anatomy, Southern Medical University, Guangzhou 510515, Guangdong Province, China
  • About author:Wu Xiaoqi, Doctoral candidate, Department of Human Anatomy, Southern Medical University, Guangzhou 510515, Guangdong Province, China
  • Supported by:
    the National Key Research and Development Plan, No. 2017YFC1103400; the Guangdong Science and Technology Plan Project, No. 2016B090917001; the Science and Technology Program of Guangdong Province, No. 2017B090912006; the High-Level Medical Team of Shenzhen Medical and Health “Three Famous Project”, No. SZSM201612019; the Science and Technology Plan of Foshan City, No. 2017AG100243

Abstract:

BACKGROUND: At present, the prosthesis is made by three steps: taking, trimming and shaping. Because the process of trimming is manual, it is closely related to the experience and technology of clinical technicians. If the prosthesis is not beautiful, it is difficult to make full contact between the receiving cavity and the residual limb.

OBJECTIVE: To collect MRI data of thigh in healthy volunteers, evaluate the anatomical symmetry of thigh amputation range (10-25 cm above knee joint space), and establish MRI data as a database so as to provide reference data for patients with lower limb amputation to match the appropriate prosthesis after operation.

METHODS: Totally 40 healthy volunteers were recruited and basic information was collected, including age, height, weight, the circumference of the knee, the circumference of the knee at 5 cm, the circumference of the knee at 10 cm, and the circumference of the knee at 15 cm. All volunteers signed the informed consent. This study was approved by the Hospital Ethics Committee. Three-dimensional reconstruction was carried out in thigh amputation range. Taking the surface area and volume of the model as parameters, the thighs of each volunteer were anatomically measured. Three-dimensional reverse engineering software was used to analyze the three-dimensional deviation of the measurement results so as to conduct quantification and visualization of the thigh symmetry.

RESULTS AND CONCLUSION: (1) Self symmetric analysis: Regarding the surface area, the maximal percent difference between the left and right thigh amputation was no more than 0.56% (P=0.109). Regarding the volume, the maximal percent difference between the left and right thigh amputation was no more than 1.19% (P=0.182). Results of the three-dimensional deviation analyses showed that the maximal mean negative deviation was -1.47 mm, while the maximal mean positive deviation was 1.14 mm. Moreover, the three-dimensional deviation distribution of 40 subjects was within 2 mm (78.02%), between 2.1 and 3.0 mm (20.97%), and more than 3 mm (1.01%). (2) Allogeneic symmetric analysis: Results of the three-dimensional deviation analyses showed that the maximal mean negative deviation was -1.97 mm, while the maximal mean positive deviation was 1.89 mm. (3) The results confirmed that adult bilateral thigh amputation range has a high degree of anatomical symmetry. When differences between two adults’ right thighs are no more than 2 cm in the circumference of the knee, the circumference of the knee at 5 cm, the circumference of the knee at 10 cm, and the circumference of the knee at 15 cm, their surface profiles of thigh amputation ranges are considered to be highly similar, but are not associated with gender, height and weight.

Key words: prosthetic socket, thigh morphology, three-dimensional reconstruction, deviation analysis, database, rehabilitation research

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