Abstract
Purpose
In August 2011, orthopaedic surgeons from more than 20 countries attended a summit on anatomic anterior cruciate ligament (ACL) reconstruction. The summit offered a unique opportunity to discuss current concepts, approaches, and techniques in the field of ACL reconstruction among leading surgeons in the field.
Methods
Five panels (with 36 panellists) were conducted on key issues in ACL surgery: anatomic ACL reconstruction, rehabilitation and return to activity following anatomic ACL reconstruction, failure after ACL reconstruction, revision anatomic ACL reconstruction, and partial ACL injuries and ACL augmentation. Panellists’ responses were secondarily collected using an online survey.
Results
Thirty-six panellists (35 surgeons and 1 physical therapist) sat on at least one panel. Of the 35 surgeons surveyed, 22 reported performing “anatomic” ACL reconstructions. The preferred graft choice was hamstring tendon autograft (53.1 %) followed by bone-patellar tendon-bone autograft (22.8 %), allograft (13.5 %), and quadriceps tendon autograft (10.6 %). Patients generally returned to play after an average of 6 months, with return to full competition after an average of 8 months. ACL reconstruction “failure” was defined by 12 surgeons as instability and pathological laxity on examination, a need for revision, and/or evidence of tear on magnetic resonance imaging. The average percentage of patients meeting the criteria for “failure” was 8.2 %.
Conclusions
These data summarize the results of five panels on anatomic ACL reconstruction. The most popular graft choice among surgeons for primary ACL reconstructions is hamstring tendon autograft, with allograft being used most frequently employed in revision cases. Nearly half of the surgeons surveyed performed both single- and double-bundle ACL reconstructions depending on certain criteria. Regardless of the technique regularly employed, there was unanimous support among surgeons for the use of “anatomic” reconstructions using bony and soft tissue remnant landmarks.
Level of evidence
V.
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Acknowledgments
We gratefully acknowledge each and every panellist for their participation in this endeavour, including their participation at the Panther Global Summit and their verification of the data presented in this article. We would also like to acknowledge the efforts of all University of Pittsburgh Sports Medicine research fellows who assisted in data collection and Sara Herold for her assistance with statistics. Finally, we would like to thank Dr. Pau Golanó for the femoral and tibial ACL insertion site dissections.
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Appendix: Panel and survey questions
Appendix: Panel and survey questions
All responses were open ended unless specified.
General information
Demographic survey
-
1.
Surgeon information:
-
a.
Name
-
b.
Company
-
c.
City/Town
-
d.
State/Province
-
e.
Country
-
f.
E-mail address
-
a.
-
2.
Total years of experience?
-
3.
Total years of experience with primary ACL reconstructions?
-
4.
Total number of ACL reconstruction performed over career?
-
5.
Total number of ACL reconstructions performed per year?
-
6.
Total number of anatomic single-bundle ACL reconstructions performed per year?
-
7.
Total number of anatomic double-bundle ACL reconstructions performed per year?
-
8.
Patient demographic characteristics:
-
a.
Age: percent in each of the following categories. (total 100 %)
-
i.
<14 years
-
ii.
14–18 years
-
iii.
19–24 years
-
iv.
25–34 years
-
v.
35–50 years
-
vi.
>50 years
-
i.
-
b.
Gender: percent in each of the following categories. (total 100 %)
-
i.
Female
-
ii.
Male
-
i.
-
c.
Level of sports participation: percent in each of the following categories. (total 100 %)
-
i.
High school athlete
-
ii.
College athlete
-
iii.
Professional athlete
-
iv.
Recreational athlete
-
v.
Non-athlete
-
i.
-
d.
List specific criteria for single-bundle ACL reconstruction
-
e.
List specific criteria for double-bundle ACL reconstruction
-
a.
Panel I: Anatomic ACL reconstruction
-
1.
List specific indications for anatomic single and double-bundle ACL reconstruction.
-
2.
Preferred technique:
-
a.
List specific criteria for location of femoral tunnel(s).
-
b.
List specific criteria for location of tibial tunnel(s).
-
c.
Do you perform the following intraoperative measurements?
-
i.
ACL mid-substance size? Yes/no
-
ii.
ACL insertion site size? Yes/no
-
iii.
Intercondylar notch width? Yes/no
-
iv.
Tunnel aperture? Yes/no
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v.
I do not perform any intraoperative measurements.
-
i.
-
d.
Do you preserve ACL remnants? Yes/no
-
e.
Do you use the following methods to create your femoral tunnel:
-
i.
Accessory medial portal? Yes/no
-
ii.
Transtibial drilling? Yes/no
-
iii.
Both techniques? Yes/no
-
i.
-
f.
Do you use the following methods to document femoral tunnel location:
-
i.
Intraoperative pictures/video? Yes/no
-
ii.
Intraoperative radiographs/fluoroscopy? Yes/no
-
iii.
Intraoperative measurements? Yes/no
-
iv.
Navigation? Yes/no
-
v.
Post-operative radiographs? Yes/no
-
vi.
Post-operative MRI? Yes/no
-
vii.
Post-operative CT scan? Yes/no
-
i.
-
g.
Do you use the following methods to document tibial tunnel location:
-
i.
Intraoperative pictures/video? Yes/no
-
ii.
Intraoperative radiographs/fluoroscopy? Yes/no
-
iii.
Intraoperative measurements? Yes/no
-
iv.
Navigation? Yes/no
-
v.
Post-operative radiographs? Yes/no
-
vi.
Post-operative MRI? Yes/no
-
vii.
Post-operative CT scan? Yes/no
-
i.
-
h.
What percentage of the time do you use: (total 100 %)
-
i.
Allograft?
-
1
Please specify type.
-
1
-
ii.
Autograft bone patellar tendon bone?
-
iii.
Autograft hamstring?
-
iv.
Autograft quad tendon?
-
i.
-
i.
What is a typical graft size you use?
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j.
How do you fix the graft on the femoral side?
-
k.
How you fix the graft on the tibial side?
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l.
What biological methods do you use to enhance graft healing?
-
i.
None.
-
ii.
PRP.
-
iii.
Fibrin clot.
-
iv.
Other. Please specify.
-
i.
-
a.
-
3.
Results:
-
a.
How often and when do you routinely see patients for follow-up? List the time from surgery for all office visits.
-
b.
Of all surgical complications, what percentage is due to: (total 100 %)
-
i.
Infection.
-
ii
DVT.
-
iii.
Stiffness or arthrofibrosis.
-
iv.
Graft failure at a time point less than 6 months.
-
v.
Graft failure at a time point greater than 6 months.
-
vi.
Other. Please specify.
-
vii.
Percent of surgeries without complications.
-
i.
-
c.
Do you use the following methods to assess outcome?
-
i.
Range of motion? Yes/no
-
ii.
Manual/instrumented laxity? Yes/no
-
iii.
Radiographs? Yes/no
-
iv.
MRI? Yes/no
-
v.
CT scan? Yes/no
-
vi.
Patient reported outcomes? Yes/no
-
vii.
Other? Please specify.
-
i.
-
a.
Panel II: Rehabilitation and return to activity: When do you allow your athletes to return to sports?
-
1.
Do you use the following criteria to determine readiness for return to sports activity?
-
a.
Time from surgery? Yes/no
-
b.
Absence of pain and swelling? Yes/no
-
c.
Range of motion? Yes/no
-
d.
Laxity upon examination? Yes/no
-
e.
Strength? Yes/no
-
f.
Functional testing? Yes/no
-
g.
Other. Please specify.
-
a.
-
2.
Do you consider graft healing when making the return to play decision? Yes/no
-
3.
If yes, how do you determine graft healing? Check all that apply.
-
a.
Time from surgery.
-
b.
Laxity.
-
c.
Graft appearance on MRI.
-
d.
Other. Please specify.
-
a.
-
4.
When do you allow your athletes to return to the following activities? Respond in months.
-
a.
Running?
-
b.
Jumping, cutting, and pivoting?
-
c.
Practice?
-
d.
Competition?
-
e.
Physical work/labor?
-
a.
-
5.
At 12 months after surgery, what percentage of your patients return to: (total 100 %)
-
a.
Full participation?
-
b.
Partial participation?
-
c.
No participation at 12 months?
-
a.
-
6.
For those patients who do not return to full activity, what is the reason? (total 100 %)
-
a.
Problems related to the knee?
-
b.
Fear of re-injury/lack of confidence?
-
c.
Personal choice: changes in lifestyle due to family or work obligations?
-
d.
Other. Please specify.
-
a.
Panel III: Failure after anatomic ACL reconstruction
-
1.
Do you use the methods below to follow your patient’s to evaluate your rate of failure after primary anatomic ACL reconstruction?
-
a.
Yearly survey or phone call? Yes/no
-
b.
Yearly office visit? Yes/no
-
c.
Recommendations to return to the office as needed? Yes/no
-
a.
-
2.
Do you use the following criteria to identify failure after anatomic ACL reconstruction?
-
a.
Complaints of instability? Yes/No
-
b.
Pathological laxity? Yes/No
-
c.
MRI evidence of graft failure? Yes/No
-
d.
Need for revision? Yes/No
-
e.
Other. Please specify.
-
a.
-
3.
What is your definition of ACL reconstruction “failure?” Please be specific.
-
4.
What percentage of your own anatomic ACL reconstructions meets your definition of failure?
-
5.
What percentage of your own anatomic ACL reconstructions do you revise?
-
6.
Of all failure cases that you see, what percentage is due to: (total 100 %)
-
a.
Technical error?
-
b.
Trauma or re-injury?
-
c.
Failure of graft healing/incorporation?
-
d.
Combination of above factors?
-
a.
Panel IV: Revision anatomic ACL reconstruction
-
1.
Do you consider the following factors in preoperative planning?
-
a.
History and physical exam? Yes/no
-
b.
Prior operative report? Yes/no
-
c.
Radiographs? Yes/no
-
d.
MRI? Yes/no
-
e.
CT Scan? Yes/no
-
f.
Other. Please specify.
-
a.
-
2.
What percentage of your revisions is: (total 100 %)
-
a.
One staged?
-
b.
Two staged?
-
a.
-
3.
What percentage of the time do you use: (total 100 %)
-
a.
Allograft?
-
i.
Please specify type.
-
i.
-
b.
Autograft bone patellar tendon bone?
-
c.
Autograft hamstring?
-
d.
Autograft quad tendon?
-
a.
-
4.
What percent of revisions are: (total 100 %)
-
a.
Single-bundle?
-
b.
Double-bundle?
-
a.
-
5.
What percent of your ACL reconstruction require: (total does not have to be 100 %)
-
a.
Meniscectomy?
-
b.
Meniscus repair?
-
c.
Meniscal transplant?
-
d.
Collateral ligament surgery?
-
e.
Posterolateral corner surgery?
-
f.
Articular cartilage procedure?
-
g.
Osteotomy?
-
h.
Other: please specify.
-
a.
-
6.
What complications have you observed with revision ACL reconstruction?
-
7.
How would you qualify your outcomes? (total 100 %)
-
a.
Very good (like pre-primary injury condition)?
-
b.
Good (same as pre-re-injury condition)?
-
c.
Fair?
-
d.
Poor (no change from re-injury condition)?
-
e.
Very poor (worse than re-injury condition)?
-
a.
Panel V: Partial ACL injuries and ACL augmentation
-
1.
What is your definition of a partial ACL injury?
-
2.
Explain how you make your diagnosis using each of the modalities below:
-
a.
History and Physical exam.
-
b.
MRI.
-
c.
Arthroscopy.
-
a.
-
3.
What percentage of patients undergoing ACL surgery has a partial ACL injury?
-
4.
How many of the following ACL augmentation types do you perform a year?
-
a.
Primary augmentation of the AM bundle (PL reconstruction)?
-
b.
Primary augmentation of the PL bundle (AM reconstruction)?
-
c.
Revision augmentation of the AM bundle (PL reconstruction)?
-
d.
Revision augmentation of the PL bundle (AM reconstruction)?
-
a.
-
5.
List your specific criteria for location of femoral tunnel(s).
-
6.
List your specific criteria for location of tibial tunnel(s).
-
7.
Do you use the following intraoperative measurements?
-
a.
ACL mid-substand size? Yes/no
-
b.
ACL insertion site size? Yes/no
-
c.
Intercondylar notch width? Yes/no
-
d.
Tunnel aperture? Yes/no
-
e.
I do not use intraoperative measurements.
-
a.
-
8.
Do you preserve ACL remnants? Yes/no
-
9.
Do you preserve the ACL stump? Yes/no
-
10.
Do you use the following methods to create the femoral tunnel?
-
a.
Accessory medial portal? Yes/no
-
b.
Transtibial drilling? Yes/no
-
c.
Both techniques? Yes/no
-
a.
-
11.
Do you use the following methods to document femoral tunnel location:
-
a.
Intraoperative pictures/video? Yes/no
-
b.
Intraoperative radiographs/fluoroscopy? Yes/no
-
c.
Intraoperative measurements? Yes/no
-
d.
Navigation? Yes/no
-
e.
Post-operative radiographs? Yes/no
-
f.
Post-operative MRI? Yes/no
-
g.
Post-operative CT scan? Yes/no
-
a.
-
12.
Do you use the following methods to document tibial tunnel location:
-
a.
Intraoperative pictures/video? Yes/no
-
b.
Intraoperative radiographs/fluoroscopy? Yes/no
-
c.
Intraoperative measurements? Yes/no
-
d.
Navigation? Yes/no
-
e.
Post-operative radiographs? Yes/no
-
f.
Post-operative MRI? Yes/no
-
g.
Post-operative CT scan? Yes/no
-
a.
-
13.
Please specify your tunnel location and method for creating tunnels.
-
14.
What percentage of the time do you use: (total 100 %)
-
a.
Allograft?
-
i.
Please specify type.
-
i.
-
b.
Autograft bone patellar tendon bone?
-
c.
Autograft hamstring?
-
d.
Autograft quad tendon?
-
a.
-
15.
What complications have you encountered?
-
16.
How would you qualify your outcomes? (total 100 %)
-
a.
Very good (like pre-primary injury condition)?
-
b.
Good (same as pre-re-injury condition)?
-
c.
Fair?
-
d.
Poor (no change from re-injury condition)?
-
e.
Very poor (worse than re-injury condition)?
-
a.
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Middleton, K.K., Hamilton, T., Irrgang, J.J. et al. Anatomic anterior cruciate ligament (ACL) reconstruction: a global perspective. Part 1 . Knee Surg Sports Traumatol Arthrosc 22, 1467–1482 (2014). https://doi.org/10.1007/s00167-014-2846-3
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DOI: https://doi.org/10.1007/s00167-014-2846-3