Largest published series evaluating "Risk Factors For Lateral Meniscal Root Tears in the ACL Injured Knee" presented by Dr Adnan Saithna, expert in ACL reconstruction, Overland Park, Kansas at the 2019 Arthroscopy Association Annual Meeting

1. RiskfactorsforLateralMeniscusPosteriorRoot
TearsinAnteriorCruciateLigamentInjuredKnees:
AnEpidemiologicalAnalysisof3956Patients.
Adnan Saithna1,2, MD, Cesar Praz3, MD, Thais Dutra Vieira3, MD, Nikolaus
Rosentiel3, MD, Vikram Kandhari3, MS, DNB, Helder Nogueira3, MD and
Bertrand Sonnery Cottet3, MD
1. Sano Orthopedics, KS & MO, USA
2. Kansas City University of Medicine and Biosciences, MO, USA
3. Santy Clinic, FIFA Centre of Medical Excellence, Lyon, France

2. Disclosure
Information
Consultant
 AS and BSC are consultants for Arthrex
 AS has provided consultancy for Smith & Nephew
in the past 12 months
Other
 BSC receives royalties from Arthrex

3. Background
 Meniscal root tears result in loss of distribution
of hoop forces, significantly increased contact
pressures, and an increased risk of early
degenerative change
 Missed diagnoses can occur due to limitations
of MRI and pre-operative physical examination

4. Objective
 To evaluate the incidence of lateral meniscus
posterior root tears (LMPRT) in a large series of
patients undergoing ACL reconstruction and to
determine important risk factors

5. Methods
 All patients who underwent primary or revision
ACL reconstruction by a single surgeon
between January 2011 and April 2018 were
considered for study eligibility. From this
overall population, all patients who underwent
repair of an LMPRT were identified.
 The epidemiology of LMPRT was defined by
the incidence within the study population,
stratified by key demographic parameters.
 Potentially important risk factors for the
presence of LMPRT were evaluated in
multivariate logistic regression analysis.

6. Surgical
Technique

7. Results
 A total of 3956 patients undergoing ACL
reconstruction were included in the study. A
LMPRT was identified and repaired in 262
patients (6.6%).

8. Risk factors
identified in
multivariate
analysis

9. Discussion
 Large sample size of current study gives a
reliable estimate of true incidence of LMPRT
compared to previous studies
 The higher frequency in more acute injuries
was a reflection of clinical practice to expedite
cases with meniscal pathology
 Confirmation of previous reports that contact
sports is an important risk factor
 Identification of concomitant medial meniscal
tears as a risk factor for LMPRT supports the
concept that these injuries are typically higher
energy

10.  The incidence of LMPRT was 6.6% in a
large series of patients undergoing ACL
reconstruction. Participation in contact
sports and the presence of a concomitant
medial meniscal tear were demonstrated
to be important independent risk factors.
 The presence of these risk factors should
raise the index of suspicion of this injury
pattern.
Conclusion

11.  The full article is available here:
 Risk Factors for Lateral Meniscus Posterior RootTears in
the Anterior Cruciate Ligament-Injured Knee: An
EpidemiologicalAnalysis of 3956 Patients From the SANTI
Study Group.
 Am J Sports Med. 2019 Mar;47(3):598-605. doi:
10.1177/0363546518818820. Epub 2019 Jan 16.
ThankYou