• 作者：G. Salvà ; Coll^a ; ^{gsalva@ibacma.com} ; M. Garcí ; a-Elí ; as^b ; M. Llusá ; Pé ; rez^c ; A. Rodrí ; guez-Baeza^d
• 关键词：Carpo ; Escafoides ; Tú ; nel carpiano ; Inestabilidad carpiana
• 刊名：Revista Espa帽ola de Cirug铆a Ortop茅dica y Traumatolog铆a
• 出版年：2011
• 期刊代码：pca311_18884415
• 类别：med
• 出版时间：May-June 2011
• 卷：55
• 期：3
• 页码：224-230
• 文件大小：197 K

Objective

To analyze the consequences of flexor retinaculum (FR) section on the kinetic behavior of the scaphoid, triquetrum and capitate bones under axial load.

Material and method

A 6 degree-of-freedom electromagnetic motion tracking device with sensors attached to the scaphoid, triquetrumcapitate and radius was used to monitor spatial changes in carpal bone alignment as a result of isometrically loading the main motor writs muscles. Six wrists from fresh cadavers were used, in which the principal motor tendons were subjected to loads proportional to physiological cross sectional area of each muscle. The experiment was carried out with the wrist in the neutral position, before and after the FR section.

Results

After FR section, the scaphoid showed less flexion (P = .05) and a higher degree of radial inclination (P = .03) compared to the same experiment with the FR intact. The kinetic behavior of the triquetrum did not change significantly.

Discussion

According to the results of this study, the isolated section of the FR did not produce greater instability of the scaphoid. If so, the scaphoid should have a higher degree of flexion, but exactly the opposite movement happens.

Conclusion

Resection of the FR alters the kinetic behavior of the scaphoid under axial load, but does not produce greater instability in the carpus. Pillar syndrome may not be as a result of scaphoid instability, but due to another type of dysfunction that needs to be determined in future studies.