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Francesca Genoese, Shelby Baez and Johanna M. Hoch

Clinical Scenario More than 2.5 million athletic injuries present to emergency departments each year, and approximately 700,000 are knee injuries. 1 Common knee injuries that may occur during athletic participation include sprains, strains, contusions, fractures, dislocations, and tendinopathies

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Mhairi K. MacLean and Daniel P. Ferris

mechanical work at the ankle, knee, and hip. This assumption does not include work performed by motion of soft tissues or include work done at the toe, vertebral, and other joints. 15 , 16 Recent studies have found that including translational work of segments is able to more accurately capture the total

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Aaron Nelson, Nathan Koslakiewicz and Thomas Gus Almonroeder

second injury involves the previously uninjured knee. It appears that there is an urgent need to improve rehabilitation following ACL reconstruction. Athletes who have undergone an ACL reconstruction often demonstrate greater interlimb knee joint kinetic (ie, joint moments and power) asymmetry during

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Caroline Lisee, Melanie L. McGrath, Christopher Kuenze, Ming Zhang, Matt Salzler, Jeffrey B. Driban and Matthew S. Harkey

Knee osteoarthritis (OA) is characterized by declining synovial joint health, especially in the articular cartilage. 1 Clinically feasible assessments of early articular cartilage changes may overcome the barriers of technically demanding or expensive biomarkers and encourage implementation of

Open access

Tomohiro Yasuda

than in the upper limbs (18–88 y 4 ; 20–89 y 5 ). In addition, recent studies have revealed that sarcopenia is muscle specific and that greater knee extensor muscle loss is found in older adults. 6 – 8 Therefore, periodic assessment of knee extensor muscle strength and size is important for all ages

Open access

Kai-Yu Ho, Brenda Benson Deaver, Tyrel Nelson and Catherine Turner

Single-leg landing, single-leg hopping, and cutting tests have been widely used in evaluating knee function after anterior cruciate ligament reconstruction (ACLR). 1 , 2 It has also been found that females with ACLR showed greater knee valgus, 2 thereby predisposing them to increased risk of ACL

Open access

Salman Nazary-Moghadam, Mahyar Salavati, Ali Esteki, Behnam Akhbari, Sohrab Keyhani and Afsaneh Zeinalzadeh

Anterior cruciate ligament deficiency (ACLD) is a common sports-related injury commonly followed by knee instability. 1 . Previous studies have shown that mechanical and functional instability of the knee, impaired muscle recruitment, loss of force, muscle atrophy, and impaired neuromuscular

Open access

Anna Lina Rahlf, Klaus-Michael Braumann and Astrid Zech

Osteoarthritis is one of the most frequent musculoskeletal disorders in older adults. 1 , 2 The current global prevalence of knee osteoarthritis (OA) is 3.8%, and women are affected more often (4.8%) than men. 3 In the past, OA was generally known as degenerative cartilage decrease. Today, OA is

Open access

Brad W. Willis, Katie Hocker, Swithin Razu, Aaron D. Gray, Marjorie Skubic, Seth L. Sherman, Samantha Kurkowski and Trent M. Guess

reinjury and demonstrate increased rates of knee pain and prevalence of osteoarthritis. 1 – 4 Investigations into preventive screening techniques monitoring ACL injury risk factors aimed at mitigating female injury rates are warranted. 1 , 2 The use of 3-dimensional marker-based motion capture systems in

Open access

Kathryn Mills, Aula Idris, Thu-An Pham, John Porte, Mark Wiggins and Manolya Kavakli

In court sports, the specific action that results in the highest incidence of anterior cruciate ligament (ACL) injury is landing from a jump while exhibiting dynamic knee valgus. 1 , 2 This movement, typified by rapid excessive knee abduction, is exhibited more frequently and to higher magnitudes