Anterior Cruciate Ligament (ACL) Reconstruction- Bioabsorbable Screw

This study has been completed.
Smith & Nephew, Inc.
Information provided by (Responsible Party):
Kurt P. Spindler, Vanderbilt University Identifier:
First received: February 15, 2010
Last updated: June 6, 2014
Last verified: June 2014

February 15, 2010
June 6, 2014
December 2009
June 2011   (final data collection date for primary outcome measure)
  • Screw integrity [ Time Frame: 2-4 yrs ] [ Designated as safety issue: No ]
  • Tunnel enlargement [ Time Frame: 2-4 years ] [ Designated as safety issue: No ]
Same as current
Complete list of historical versions of study NCT01069588 on Archive Site
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Anterior Cruciate Ligament (ACL) Reconstruction- Bioabsorbable Screw
ACL Reconstruction - Bioabsorbable Screws- 2 Year Follow-up

To evaluate the knee functionality, screw integrity, graft integrity, cartilage effect, and bony ingrowth in patients treated with the CALAXO screw and MILAGRO screw two years after ACL reconstruction.

This study will combine the use of survey response, MRI, and x-rays of the knees in Dr. Spindler's ACL reconstructed patients in order to examine long term healing of two types of bioabsorbable screw. We will use a 2-4 yr time point to look at patient reported symptoms of pain and swelling from the surveys and use the x-rays and MRIs to look at absorption of the screw, healing of the graft, and body reactions to the screw.

Observational Model: Cohort
Time Perspective: Prospective
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Non-Probability Sample

Patients 2-4 years post ACL reconstruction performed by Dr. Kurt Spindler, under age 35, injured in sport, unilateral primary ACL.

Rupture of Anterior Cruciate Ligament
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  • Calaxo
    Received Calaxo screw
  • Milagro
    Received a Milagro screw
Cox CL, Spindler KP, Leonard JP, Morris BJ, Dunn WR, Reinke EK. Do newer-generation bioabsorbable screws become incorporated into bone at two years after ACL reconstruction with patellar tendon graft?: A cohort study. J Bone Joint Surg Am. 2014 Feb 5;96(3):244-50. doi: 10.2106/JBJS.L.01652.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
April 2012
June 2011   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • Age range: 12-35 years of age at the time of follow-up.
  • Gender: Both.
  • Minorities: All.
  • Involved in sports at the time of injury.
  • Participants must be at least two years past the date of ACL reconstruction surgery and not more than four years past the date of surgery
  • Bioabsorbable Screws used during ACL reconstruction surgery

Exclusion Criteria:

  • Age: <12 or >35 years of age
  • Non-active or unable to participate for health reasons
  • Simultaneous bilateral ACL reconstruction surgeries.
  • If any of the following conditions exist in the ipsilateral knee:

    • Revision ACL reconstruction
    • Complex knee injury
  • If any of the following conditions exist in the contralateral knee:

    • ACL deficient
    • Prior ACL reconstruction
    • Prior surgery of any type
  • Insufficient initial documentation
  • Cannot be contacted by phone
  • Neither Calaxo nor Milagro screw used at the time of ACL reconstruction
12 Years to 35 Years
Contact information is only displayed when the study is recruiting subjects
United States
Kurt P. Spindler, Vanderbilt University
Vanderbilt University
Smith & Nephew, Inc.
Principal Investigator: Kurt P Spindler, M.D. Vanderbilt University
Vanderbilt University
June 2014

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP