Summary: A retrospective chart review of differences in maximal and reactive strength between injured and uninjured limbs of athletes who underwent isolated ACLR and those who underwent ACLR-LEAT.

Background

Recently there has been a resurgence of interest in lateral, extra-articular ITB tenodesis (LEAT) to augment ACLR in an attempt to reduce the residual laxity that may be present post isolated ACLR and subsequently improve surgical outcomes. Adding a LEAT procedure to an isolated ACLR surgery adds to the surgical morbidity and raises the concern of decreasing maximal quadriceps strength and may lead to a significant reduction in lower limb reactive strength and hence plyometric ability ahead of returning to play (RTP).

Objectives: The objective of our study was to identify differences in maximal quadriceps strength and reactive strength, with isokinetic and biomechanical 3D Laboratory testing at 6-8 months post-operatively, between athletes who undergo isolated ACLR and those who had ACLR-LEAT surgery.

Methods

This is a single surgeon, retrospective chart review of 68 athletes, matched for gender, age and activity level, who underwent isolated ACLR or ACLR-LEAT. All athletes completed their isokinetic and 3D motion capture assessments between 6 and 8 months post-operatively in our Biomechanical Laboratory. Each athlete’s isokinetic scores alongside their double leg drop jump (DLDJ) and bilateral single leg drop jump (SLDJ) results were documented and analysed.

Results

There was no statistically significant difference between the two groups for maximal quadriceps strength (P = 0.86; ) or for LSI for either muscle group (P=0.95,) . Reactive strength was significantly higher for DLDJ and bilateral SLDJ in the ACLR group (P = 0.018; P=0.009; P= 0.014).

Conclusions

In our isokinetic and biomechanical analysis we observed no statistically significant difference in the maximal strength between uninjured and injured limbs for isolated ACLR athletes and ACLR-LEAT athletes. Between 6-8 months, reactive strength was significantly higher in the isolated ACLR athletes. This is of clinical relevance for surgical decision making regarding augmenting ACLR with LEAT, as well as, prescription of plyometric end stage rehabilitation and RTP timelines.

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Age, Time From Injury To Surgery And Quadriceps Strength Affect The Risk Of Revision Surgery After Primary Acl Reconstruction Abstract Presentation 6 minutes Riccardo Cristiani, MD, PhD, SWEDEN Magnus Forssblad, SWEDEN Gunnar Edman, MD, PhD, Prof., SWEDEN Karl Eriksson, MD, PhD, Prof., SWEDEN Anders Stalman, MD, PhD, associate professor, SWEDEN
In Vivo Measurement of Anterior Cruciate Ligament Elongation and Strain Rate during Increasingly Demanding Activities ePoster Presentation Kyohei Nishida , MD, PhD, JAPAN Caiqi Xu, MD, CHINA Tom Gale, MS, UNITED STATES William Anderst, PhD, UNITED STATES Freddie H. Fu, MD, UNITED STATES
Increased Osteoarthritis And Knee Instability Following Postoperative Septic Knee Arthritis After Anterior Cruciate Ligament Reconstruction with a Minimum 8 Year Follow-Up ePoster Presentation Thomas R. Pfeiffer, Prof., GERMANY Julius Stüber, cand. med., GERMANY Jan-Hendrik Naendrup, BS, MD, GERMANY Daniel Guenther, MD, PD, GERMANY Robin Otchwemah, MD, GERMANY Sven T. Shafizadeh, Prof., GERMANY Paola Kappel, MD, GERMANY Arasch Wafaisade, PD, GERMANY Sebastian Imach, MD, MBA, GERMANY
Full-Thickness Peroneus Longus Tendon Autograft For Anterior Cruciate Ligament Reconstruction: Outcomes And Donor Site Morbidity ePoster Presentation Tarun Goyal, MBBS, MS, DNB, MCh, FRCS (Edin), INDIA Souvik Paul, MBBS, MS Orthopedics (AIIMS), DNB, MCh, Dip SICOT, INDIA Lakshmana Das Sekar, MS, DNB Orthopaedics, INDIA Arghya Kundu Choudhury, MS, MCh Joint replacement and reconstruction, INDIA
Value, Limitations And Recommendations For Use Of Metal-Reduction Knee MRI Sequences Following Anterior Cruciate Ligament Reconstruction Abstract Presentation 6 minutes Brandon Zhao, MD, CANADA Nabil Khan, MBChB, MMED, FCS Orth, CANADA Mark F. Sommerfeldt, MD, CANADA Anukul Panu, MD, CANADA Jacob L Jaremko, MD, PhD, CANADA Catherine May Ting Hui, MD, FRCSC, CANADA
Does In Vivo Kinematics Following Acl Reconstruction With Or Without Lateral Extraarticular Tenodesis Correlate With Preoperative Quantitative Pivot Shift? Abstract Presentation 5 minutes Christopher M. Gibbs, MD, UNITED STATES Philipp Wilhelm Winkler, MD, AUSTRIA Jonathan D Hughes, MD, UNITED STATES Adam Popchak, DPT, PhD, UNITED STATES Daisuke Chiba, MD, PhD, JAPAN Bryson P. Lesniak, MD, UNITED STATES William Anderst, PhD, UNITED STATES Volker Musahl, MD, Prof., UNITED STATES
Early ROM exercise after ACLR with hamstring autograft does not cause joint laxity : A Prospective Randomized Controlled Trial, 2 years follow up ePoster Presentation Jeong-Ku Ha, MD, phD, Prof, KOREA, REPUBLIC OF Kyu Sung Chung, MD, PhD, Prof., KOREA, REPUBLIC OF

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A Comparison of Lower Limb Strength and Plyometric Ability in Athletes who underwent ACLR with Lateral Extra-Articular Ilio-Tibial Band Tenodesis when compared with Isolated ACLR Surgery. A Biomechanical Study.

A Comparison of Lower Limb Strength and Plyometric Ability in Athletes who underwent ACLR with Lateral Extra-Articular Ilio-Tibial Band Tenodesis when compared with Isolated ACLR Surgery. A Biomechanical Study.

Background

Methods

Results

Conclusions

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A Comparison of Lower Limb Strength and Plyometric Ability in Athletes who underwent ACLR with Lateral Extra-Articular Ilio-Tibial Band Tenodesis when compared with Isolated ACLR Surgery. A Biomechanical Study.

A Comparison of Lower Limb Strength and Plyometric Ability in Athletes who underwent ACLR with Lateral Extra-Articular Ilio-Tibial Band Tenodesis when compared with Isolated ACLR Surgery. A Biomechanical Study.

Background

Methods

Results

Conclusions

More ISAKOS 2021: Global Content