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Original Article
Alteration of the Patella Tendon Length after Intramedullary Nail in Tibial Shaft Fractures
Dong-Eun Shin, M.D., Ki-Shik Nam, M.D., Jin-Young Bang, M.D., Ji-Hoon Chang, M.D.
Journal of the Korean Fracture Society 2012;25(4):283-287.
DOI: https://doi.org/10.12671/jkfs.2012.25.4.283
Published online: October 19, 2012

Department of Orthopedic Surgery, Bundang CHA Hospital, CHA University, Seongnam, Korea.

*Nanoori Gangseo Hospital, Seoul, Korea.

Address reprint requests to: Ki-Shik Nam, M.D. Department of Orthopedic Surgery, Bundang CHA Hospital, CHA University, 59, Yatap-ro, Bundang-gu, Seongnam 463-712, Korea. Tel: 82-31-780-5270, Fax: 82-31-703-3578, allthatineed@naver.com
• Received: May 8, 2011   • Revised: January 9, 2012   • Accepted: September 5, 2012

Copyright © 2012 The Korean Fracture Society

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  • Purpose
    To compare and analyze length change of patella tendon after intramedullary nailing of tibial shaft fracture using transtendinous approach.
  • Materials and Methods
    Thirty-two cases were analyzed from December, 1999 to December, 2005. Insall Salvati ratios were estimated. Severity of initial trauma, duration of nail retension, knee function and pain on change of length of patellar tendon was evaluated.
  • Results
    Mean duration of nail retention was twenty-two months. The shortening of patella tendon was observed in 25 cases (p<0.001). The effect of AO type and the duration of nail retension on the decrease of Insall Salvati ratio was not significant (p>0.05, p=0.778). Lysholom score decrease to 89.5. There was no significant difference between the shortening of patellar tendon length and knee pain (p=0.058).
  • Conclusion
    After intramedullary nailing for closed tibia fracture, shortening of patellar tendon length is observed. That is irrelevant to the fracture type and the duration of nail retension. The shortening of patella tendon length may contribute to decreasing of knee function, but it was no significance of knee pain after intramedullary nailing.
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Fig. 1
Insall-Salvati ratio of intact knee joint compared to knee joint of the injured side after removal of the nail. LT: Length of patella tendon, LP: Length of patella.
jkfs-25-283-g001.jpg
Table 1
Difference in Insall-Salvati Ratio according to AO Classification
jkfs-25-283-i001.jpg

Values are presented as mean (range) or number or mean±standard deviation. M: Male, F: Female, LT: Length of patella tendon, LP: Length of patella.

Table 2
Difference in Insall-Salvati Ratio according to Duration of Nail Retention
jkfs-25-283-i002.jpg

Values are presented as mean (range) or number or mean±standard deviation. M: Male, F: Female, LT: Length of patella tendon, LP: Length of patella.

Table 3
Relationship between Patellar Tendon Length Change and Knee Pain
jkfs-25-283-i003.jpg

Figure & Data

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        Alteration of the Patella Tendon Length after Intramedullary Nail in Tibial Shaft Fractures
        J Korean Fract Soc. 2012;25(4):283-287.   Published online October 31, 2012
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      Alteration of the Patella Tendon Length after Intramedullary Nail in Tibial Shaft Fractures
      Image
      Fig. 1 Insall-Salvati ratio of intact knee joint compared to knee joint of the injured side after removal of the nail. LT: Length of patella tendon, LP: Length of patella.
      Alteration of the Patella Tendon Length after Intramedullary Nail in Tibial Shaft Fractures

      Difference in Insall-Salvati Ratio according to AO Classification

      Values are presented as mean (range) or number or mean±standard deviation. M: Male, F: Female, LT: Length of patella tendon, LP: Length of patella.

      Difference in Insall-Salvati Ratio according to Duration of Nail Retention

      Values are presented as mean (range) or number or mean±standard deviation. M: Male, F: Female, LT: Length of patella tendon, LP: Length of patella.

      Relationship between Patellar Tendon Length Change and Knee Pain

      Table 1 Difference in Insall-Salvati Ratio according to AO Classification

      Values are presented as mean (range) or number or mean±standard deviation. M: Male, F: Female, LT: Length of patella tendon, LP: Length of patella.

      Table 2 Difference in Insall-Salvati Ratio according to Duration of Nail Retention

      Values are presented as mean (range) or number or mean±standard deviation. M: Male, F: Female, LT: Length of patella tendon, LP: Length of patella.

      Table 3 Relationship between Patellar Tendon Length Change and Knee Pain


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