Development and clinical application of a new type of intramedullary nail tail cap_Chinese Journal of Reparative and Reconstructive Surgery

Authors：

YANG Kun ,  YANG Yunkang , GE Jianhua , BAI Rui , XIANG Feifan , SUN Yuanlin , ZHOU Ju

Department of Bone and Joint Surgery, Affiliated Hospital of Southwest Medical University, Luzhou Sichuan, 646000, P.R.China;

Corresponding author：

YANG Yunkang, Email: droyyk@163.com

Keywords：

Femoral intramedullary nail; intramedullary nail tail cap; internal fixation

DOI：

10.7507/1002-1892.201611123

Video：

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Objective To develop a new type of tail cap for closing the tail of the central hole of the interlocking intramedullary nail so as to reduce difficulty in implantation of the tail cap into intramedullary nail, and ensure the accuracy of implantation, as well as reduce unnecessary operation time. Methods In 2014, the new type of intramedullary nail tail cap (" new tail cap” for short) was successfully developed, and has been granted national utility model patent. A randomized controlled clinical trial was conducted in 34 patients with non pathological femoral shaft fractures treated between August 2014 and March 2016. The patients were randomly divided into groups A and B, 17 patients each group. There was no significant difference in gender, age, side, body mass index, cause of injury, injury to operation time, and fracture AO classification between groups (P>0.05), with comparability. All patients underwent fixation with interlocking intramedullary nail, and the new tail cap and original tail cap were used in groups A and B respectively. The blood loss and operation time during tail cap implantation, fracture healing time, and complications were recorded and compared between 2 groups; the limb function was evaluated by Klemm function evaluation standard. Results The blood loss and operation time during tail cap implantation of group A [(3.5±0.8) mL and (10.57±3.15) s] were significantly less than those of group B [(5.5±1.7) mL and (21.99±6.90) s] (t=–8.281,P=0.010;t=–10.743,P=0.009). All new tail caps were successfully implanted by one-time in group A, and the one-time success rate was 100%; the original tail cap exfoliation occurred in 3 cases of group B, and the one-time success rate was 82.4%. All the patients were followed up 6-16 months (mean, 9.7 months); there was no deep infection, loosening or breakage of internal fixation, and other serious complications. The time of fracture healing was (16.4±3.2) weeks in group A and (15.8±3.5) weeks in group B, showing no significant difference (t=0.514,P=0.611). At last follow-up, according to the Klemm function evaluation standard, the results were excellent in 14 cases and good in 3 cases in group A, and were excellent in 11 cases and good in 6 cases in group B, showing no significant difference between 2 groups (χ²=0.142,P=0.707). Conclusion The new type of femoral intramedullary nail tail cap can simplify operation, shorten operation time, and reduce blood loss, and it has satisfactory effectiveness.

Citation： YANG Kun, YANG Yunkang, GE Jianhua, BAI Rui, XIANG Feifan, SUN Yuanlin, ZHOU Ju. Development and clinical application of a new type of intramedullary nail tail cap. Chinese Journal of Reparative and Reconstructive Surgery, 2017, 31(4): 392-396. doi: 10.7507/1002-1892.201611123 Copy

1.	Lögters T, Windolf J, Flohé S. Fractures of the shaft of the femur. Unfallchirurg, 2009, 112(7): 635-650.
2.	Ricci WM, Gallagher B, Haidukewych GJ. Intramedullary nailing of femoral shaft fractures: current concepts. J Am Acad Orthop Surg, 2009, 17(5): 296-305.
3.	Liu Y, Tao R, Liu F, et al. Mid-term outcomes after intramedullary fixation of peritrochanteric femoral fractures using the new proximal femoral nail antirotation (PFNA). Injury, 2010, 41(8): 810-817.
4.	刘岩, 陈庆泉, 侯春林, 等. 交锁髓内钉治疗股骨干粉碎性骨折. 中华创伤骨科杂志, 2004, 6(4): 382-385.
5.	徐云钦, 冯水云, 梁再跃, 等. 三种内固定在股骨干骨折中的应用. 中华创伤骨科杂志, 2002, 4(4): 316-317.
6.	冯和林, 李增炎, 张英泽, 等. 股骨带锁髓内钉尾帽拧入的一种方法. 中国骨与关节损伤杂志, 2005, 20(9): 585.
7.	Klemm KW, Börner M. Interlocking nailing of complex fractures of the femur and tibia. Clin Orthop Relat Res, 1986, (212): 89-100.
8.	Park KC, Oh CW, Byun YS, et al. Intramedullary nailing versus submuscular plating in adolescent femoral fracture. Injury, 2012, 43(6): 870-875.
9.	Firat A, Tecimel O, Deveci A, et al. Surgical technique: supine patient position with the contralateral leg elevated for femoral intramedullary nailing. Clin Orthop Relat Res, 2013, 471(2): 640-648.
10.	Palmu SA, Lohman M, Paukku RT, et al. Childhood femoral fracture can lead to premature knee-joint arthritis. 21-year follow-up results: a retrospective study. Acta Orthop, 2013, 84(1): 71-75.
11.	Kuntscher G. Progress in the field of intramedullary nailing. Langenbecks Arch Klin Chir Ver Dtsch Z Chir, 1950, 264: 547-551.
12.	Kuntscher G. Intramedullary nailing of comminuted fractures. Langenbecks Arch Chir, 1968, 322: 1063-1069.
13.	Kempf I, Grosse A, Abalo C. Locked intramedullary nailing. Its application to femoral and tibial axial, rotational, lengthening, and shortening osteotomies. Clin Orthop Relat Res, 1986, (212): 165-173.
14.	White GM, Healy WL, Brumback RJ, et al. The treatment of fractures of the femoral shaft with the Brooker-Wills distal locking intramedullary nail. J Bone Joint Surg (Am), 1986, 68(6): 865-876.
15.	王向利, 郑祖根, 董启榕, 等. 胫骨髓腔 CT、X 线片形态测量与分叉式交锁髓内钉设计的相关研究. 骨与关节损伤杂志, 2001, 16(5): 348-351.
16.	徐海涛, 盛加根, 陆男吉, 等. 股骨干骨折闭合复位器及髓内钉进针瞄准器的研制与临床应用. 中华创伤骨科杂志, 2014, 16(2): 104-109.
17.	Im GI, Shin SR. Treatment of femoral shaft fractures with a titanium intramedullary nail. Clin Orthop Relat Res, 2002, (401): 223-229.
18.	Oszwald M, Westphal R, Stier R, et al. Hands-on robotic distal interlocking in intramedullary nail fixation of femoral shaft fractures. Technol Health Care, 2010, 18(4-5): 325-334.
19.	Whatling GM, Nokes LD. Literature review of current techniques for the insertion of distal screws into intramedullary locking nails. Injury, 2006, 37(2): 109-119.

1. Lögters T, Windolf J, Flohé S. Fractures of the shaft of the femur. Unfallchirurg, 2009, 112(7): 635-650.
2. Ricci WM, Gallagher B, Haidukewych GJ. Intramedullary nailing of femoral shaft fractures: current concepts. J Am Acad Orthop Surg, 2009, 17(5): 296-305.
3. Liu Y, Tao R, Liu F, et al. Mid-term outcomes after intramedullary fixation of peritrochanteric femoral fractures using the new proximal femoral nail antirotation (PFNA). Injury, 2010, 41(8): 810-817.
4. 刘岩, 陈庆泉, 侯春林, 等. 交锁髓内钉治疗股骨干粉碎性骨折. 中华创伤骨科杂志, 2004, 6(4): 382-385.
5. 徐云钦, 冯水云, 梁再跃, 等. 三种内固定在股骨干骨折中的应用. 中华创伤骨科杂志, 2002, 4(4): 316-317.
6. 冯和林, 李增炎, 张英泽, 等. 股骨带锁髓内钉尾帽拧入的一种方法. 中国骨与关节损伤杂志, 2005, 20(9): 585.
7. Klemm KW, Börner M. Interlocking nailing of complex fractures of the femur and tibia. Clin Orthop Relat Res, 1986, (212): 89-100.
8. Park KC, Oh CW, Byun YS, et al. Intramedullary nailing versus submuscular plating in adolescent femoral fracture. Injury, 2012, 43(6): 870-875.
9. Firat A, Tecimel O, Deveci A, et al. Surgical technique: supine patient position with the contralateral leg elevated for femoral intramedullary nailing. Clin Orthop Relat Res, 2013, 471(2): 640-648.
10. Palmu SA, Lohman M, Paukku RT, et al. Childhood femoral fracture can lead to premature knee-joint arthritis. 21-year follow-up results: a retrospective study. Acta Orthop, 2013, 84(1): 71-75.
11. Kuntscher G. Progress in the field of intramedullary nailing. Langenbecks Arch Klin Chir Ver Dtsch Z Chir, 1950, 264: 547-551.
12. Kuntscher G. Intramedullary nailing of comminuted fractures. Langenbecks Arch Chir, 1968, 322: 1063-1069.
13. Kempf I, Grosse A, Abalo C. Locked intramedullary nailing. Its application to femoral and tibial axial, rotational, lengthening, and shortening osteotomies. Clin Orthop Relat Res, 1986, (212): 165-173.
14. White GM, Healy WL, Brumback RJ, et al. The treatment of fractures of the femoral shaft with the Brooker-Wills distal locking intramedullary nail. J Bone Joint Surg (Am), 1986, 68(6): 865-876.
15. 王向利, 郑祖根, 董启榕, 等. 胫骨髓腔 CT、X 线片形态测量与分叉式交锁髓内钉设计的相关研究. 骨与关节损伤杂志, 2001, 16(5): 348-351.
16. 徐海涛, 盛加根, 陆男吉, 等. 股骨干骨折闭合复位器及髓内钉进针瞄准器的研制与临床应用. 中华创伤骨科杂志, 2014, 16(2): 104-109.
17. Im GI, Shin SR. Treatment of femoral shaft fractures with a titanium intramedullary nail. Clin Orthop Relat Res, 2002, (401): 223-229.
18. Oszwald M, Westphal R, Stier R, et al. Hands-on robotic distal interlocking in intramedullary nail fixation of femoral shaft fractures. Technol Health Care, 2010, 18(4-5): 325-334.
19. Whatling GM, Nokes LD. Literature review of current techniques for the insertion of distal screws into intramedullary locking nails. Injury, 2006, 37(2): 109-119.

Chinese Journal of Reparative and Reconstructive Surgery

Development and clinical application of a new type of intramedullary nail tail cap

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