SIMULTANEOUS BILATERAL TEAR OF THE KNEE EXTENSOR MECHANISM IN A PRE-ADOLESCENT: CASE REPORT

Introduction. Reconstruction of bone defects is a long, challenging process both for the patient and for the treating surgeon. Bone defects frequently occur as a result of aggressive surgical debridement and bone resection in case of acute trauma, open fractures, chronic bone infections, tumors and non-unions. Early amputation is often superior to prolonged attempts at salvage because they can create serious problems in the patients? lives. There are numerous alternative methods of limb-salvage nowadays. Case Report. We report a case of a fifty-year-old man with a distal femoral non-union and a co-existing failure of the knee extensor mechanism, who was treated using an intramedullary segmental defect bridging knee arthrodesis system (Osteobridge). At the final check-up twenty four months later, he had excellent clinical, functional and radiological results. Conclusion. Osteobridge is an excellent knee arthrodesis system, which is preferable to other methods in case of resection of the distal femur along with the failure of the knee extensor mechanism.

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Salvage of the Lower Limb after a Full Thickness Burn with Loss of the Knee Extensor Mechanism: A Case Report

Journal of Orthopaedic Surgery ◽

10.1177/230949901302100131 ◽

2013 ◽

Vol 21 (1) ◽

pp. 122-124

Author(s):

Khaled M Sarraf ◽

Duncan D Atherton ◽

Asantha R Jayaweera ◽

Charles E Gibbons ◽

Isabel Jones

Keyword(s):

Case Report ◽

Lower Limb ◽

Knee Extensor ◽

Extensor Mechanism ◽

Full Thickness ◽

Knee Extensor Mechanism

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Bifocal disruption of the knee extensor mechanism: a case report and literature review

Archives of Orthopaedic and Trauma Surgery ◽

10.1007/s00402-013-1696-7 ◽

2013 ◽

Vol 133 (4) ◽

pp. 517-521 ◽

Cited By ~ 6

Author(s):

Suk Kang ◽

Phil Hyun Chung ◽

Young Sung Kim ◽

Ho Min Lee ◽

Jong Pil Kim

Keyword(s):

Case Report ◽

Literature Review ◽

Knee Extensor ◽

Extensor Mechanism ◽

Knee Extensor Mechanism

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MOMENT ARM OF THE KNEE-EXTENSOR MECHANISM MEASURED IN VIVO ACROSS A RANGE OF DAILY ACTIVITIES

Journal of Biomechanics ◽

10.1016/j.jbiomech.2021.110484 ◽

2021 ◽

pp. 110484

Author(s):

Hans A. Gray ◽

Shanyuanye Guan ◽

Lucas T. Thomeer ◽

Marcus G. Pandy

Keyword(s):

Knee Extensor ◽

Extensor Mechanism ◽

Daily Activities ◽

Moment Arm ◽

Knee Extensor Mechanism

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Iliotibial Band Autograft Provides the Fastest Recovery of Knee Extensor Mechanism Function in Pediatric Anterior Cruciate Ligament Reconstruction

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18147492 ◽

2021 ◽

Vol 18 (14) ◽

pp. 7492

Author(s):

Tishya L. Wren ◽

Veronica Beltran ◽

Mia J. Katzel ◽

Adriana S. Conrad-Forrest ◽

Curtis D. VandenBerg

Keyword(s):

Knee Flexion ◽

Ligament Reconstruction ◽

Cruciate Ligament ◽

Knee Extensor ◽

Extensor Mechanism ◽

Iliotibial Band ◽

Cruciate Ligament Reconstruction ◽

Mechanism Function ◽

Anterior Cruciate ◽

Knee Extensor Mechanism

Iliotibial band autograft is an increasingly popular option for pediatric anterior cruciate ligament reconstruction (ACLR). The purpose of this study was to compare recovery of knee extensor mechanism function among pediatric patients who underwent ACLR using iliotibial band (IT), hamstring tendon (HT), quadriceps tendon (QT), and patellar tendon (PT) autografts. One hundred forty-five pediatric athletes (76 female; age 15.0, range 7–21 years) with recent (3–18 months) unilateral ACLR performed drop-jump landing and 45° cutting with 3D motion capture. Knee extensor mechanism function (maximum knee flexion angle, maximum internal knee extensor moment, energy absorption at knee) during the loading phase (foot contact to peak knee flexion) was compared among graft types (20 IT, 29 HT, 39 QT, 57 PT) and sides (ACLR or contralateral) using linear mixed models with sex, age, and time since surgery as covariates. Overall, knee flexion was significantly lower on the operated vs. contralateral side for HT, QT, and PT during both tasks (p < 0.03). All graft types exhibited lower knee extensor moments and energy absorption on the operated side during both movements (p ≤ 0.001). Kinetic asymmetry was significantly lower for IT compared with QT and PT during both movements (p ≤ 0.005), and similar patterns were observed for HT vs. QT and PT (p ≤ 0.07). Asymmetry was similar between IT and HT and between QT and PT. This study found that knee extensor mechanism function recovers fastest in pediatric ACLR patients with IT autografts, followed by HT, in comparison to QT and PT, suggesting that IT is a viable option for returning young athletes to play after ACLR.

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Comparison of adverse events and postoperative mobilization following knee extensor mechanism rupture repair: A systematic review and network meta-analysis

Injury ◽

10.1016/j.injury.2017.10.013 ◽

2017 ◽

Vol 48 (12) ◽

pp. 2793-2799 ◽

Cited By ~ 7

Author(s):

Joseph Serino ◽

Amin Mohamadi ◽

Sebastian Orman ◽

Brian McCormick ◽

Philip Hanna ◽

...

Keyword(s):

Systematic Review ◽

Adverse Events ◽

Meta Analysis ◽

Knee Extensor ◽

Extensor Mechanism ◽

Knee Extensor Mechanism

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Quadriceps reconstruction with suture anchor and Achilles allograft combination in quadriceps tendon re-rupture after primary surgical repair: A novel technique

Joint Diseases and Related Surgery ◽

10.52312/jdrs.2021.14 ◽

2021 ◽

Author(s):

Erhan Okay ◽

Mehmet Cenk Turgut ◽

Abbas Tokyay

Keyword(s):

Suture Anchor ◽

Surgical Repair ◽

Primary Repair ◽

Full Range ◽

Knee Extensor ◽

Quadriceps Tendon ◽

Extensor Mechanism ◽

Surgical Options ◽

Knee Extensor Mechanism

Quadriceps ruptures are one of the pathological conditions of the knee extensor mechanism, accounting for 3% of all tendon injuries. These injuries cause substantial disability of the extensor mechanism. Primary repair is the treatment of choice in acute presentation. In the setting of chronic conditions, the treatment becomes more challenging. Available surgical options include lengthening procedures, and reconstruction with auto graft or allografts. The traditional Scuderi and Codivilla techniques are challenging to perform in degenerative or traumatic retracted ruptures. There is no standard effective treatment in these patients, which yields the best clinical and biomechanical outcomes. An 18 - year-old male patient with quadriceps re-rupture after a primary repair was managed with allograft reconstruction using suture anchors. At six years of follow-up, the patient gained a full range of motion with excellent clinical outcomes. He returned to his previous work. In conclusion, quadriceps reconstruction using suture anchor and Achilles allograft combination is a feasible technique in neglected cases who present with quadriceps tendon re-rupture after primary surgical repair.

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