Clinical trial NCT04937517: ADC in Assessing Femoral Tunnel Position
Official title: The Role of the Apex of the Deep Cartilage in Assessing Femoral Tunnel Position for Anterior Cruciate Ligament Reconstruction
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: ACL Injury
Keywords: femoral tunnel
apex of the deep cartilage（ADC）
Lead sponsor: Peking University Third Hospital
Sponsor class: OTHER
First posted: 2021-06-24
Enrollment: 52
Sex: ALL
Minimum age (years): 18
Maximum age (years): 55
Standard ages: ADULT
Accepts healthy volunteers: yes
Observational model: CASE_ONLY
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Adults aged 18-55 who need and suitable anterior cruciate ligament reconstruction

Brief summary: To examine the consistency between postoperative CT scan and intraoperative arthroscopic measurement in evaluating femoral tunnel position for anterior cruciate ligament （ACL）reconstruction，both using the apex of the deep cartilage（ADC）as the marker.

Detailed description: The position of the center of femoral tunnel was decided in the complete femoral stub. Then the length from the ADC to the anterior cartilage margin（L1）and to the center of femoral tunnel（l1），as well as the center to the distal cartilage margin（D1）were measured under arthroscopy and on post-operative CT scan（L2，l2 and D2）. Moreover，P1 and P2 were calculated through l1/L1 and l2/L2.

Eligibility criteria: Inclusion Criteria:

* Adults aged 18-55 who need anterior cruciate ligament reconstruction

Exclusion Criteria:

* Volunteers unsuitable for anterior cruciate ligament reconstruction

Primary outcomes:
measure: length from ADC to anterior cartilage margin (L1) under arthroscopy
timeFrame: during operation
measure: length from ADC to the center of femoral tunnel (l1) under arthroscopy
timeFrame: during operation
measure: length from the center of femoral tunnel to the distal cartilage margin(D1) under arthroscopy
timeFrame: during operation
measure: length from ADC to anterior cartilage margin (L2) on CT
timeFrame: 1 day after operation
measure: length from ADC to the center of femoral tunnel (l1) on CT
timeFrame: 1 day after operation
measure: length from the center of femoral tunnel to the distal cartilage margin(D1) on CT
timeFrame: 1 day after operation
Secondary outcomes:
Other outcomes:
Locations:
city: Beijing
country: China
facility: Ma Yong
state: Beijing
Study officials:
References:
citation: Hofbauer M, Muller B, Murawski CD, van Eck CF, Fu FH. The concept of individualized anatomic anterior cruciate ligament (ACL) reconstruction. Knee Surg Sports Traumatol Arthrosc. 2014 May;22(5):979-86. doi: 10.1007/s00167-013-2562-4. Epub 2013 Jun 6.
citation: Inderhaug E, Larsen A, Strand T, Waaler PA, Solheim E. The effect of feedback from post-operative 3D CT on placement of femoral tunnels in single-bundle anatomic ACL reconstruction. Knee Surg Sports Traumatol Arthrosc. 2016 Jan;24(1):154-60. doi: 10.1007/s00167-014-3355-0. Epub 2014 Oct 2.
citation: Hart A, Han Y, Martineau PA. The Apex of the Deep Cartilage: A Landmark and New Technique to Help Identify Femoral Tunnel Placement in Anterior Cruciate Ligament Reconstruction. Arthroscopy. 2015 Sep;31(9):1777-83. doi: 10.1016/j.arthro.2015.03.026. Epub 2015 May 15.
citation: Shi W, Zhang J, Meng Q, Chen N, Shen Q, Li S, Cao Z, Ao Y, Ma Y. The apex of the deep cartilage is a stable landmark to evaluate the femoral tunnel position in ACL reconstruction. Knee Surg Sports Traumatol Arthrosc. 2023 Jan;31(1):256-263. doi: 10.1007/s00167-022-07090-4. Epub 2022 Aug 13.