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Brian D. Street and William Gage

TKR, about one-third went on to have a second joint replacement and that 92% of those replaced joints were the contralateral knee. It has been argued that after unilateral TKR, asymmetrical gait patterns play a contributory factor in the progression of OA, 17 as both magnitude and directional

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Gabrielle Stubblefield, Jeffrey Tilly and Kathy Liu

possible, clinicians should access preinjury baseline measurements for comparison after injury to aid in rehabilitation progression throughout the recovery process after an injury. While there is pressure to return athletes to activity as quickly as possible, interfering with the healing process can affect

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Samantha N. Boudreau, Maureen K. Dwyer, Carl G. Mattacola, Christian Lattermann, Tim L. Uhl and Jennifer Medina McKeon

Context:

Functional exercises are often used in strengthening programs after lower extremity injury. Activation levels of the stabilizing hip muscles have not been documented.

Objective:

To document the progression of hip-muscle activation levels during 3 lower extremity functional exercises.

Design:

Cross-sectional.

Setting:

Laboratory.

Participants:

44 healthy individuals, 22 women and 22 men.

Intervention:

Subjects, in 1 testing session, completed 3 trials each of the lunge (LUN), single-leg squat (SLSQ), and step-up-and-over (SUO) exercise.

Main Outcome Measures:

Root-mean-square muscle amplitude (% reference voluntary muscle contraction) was measured for 5 muscles during the 3 exercises: rectus femoris (RF), dominant and nondominant gluteus medius (GMed_D and GMed_ND), adductor longus (ADD), and gluteus maximus (GMX).

Results:

The RF, GMAX, and GMed_D were activated in a progression from least to greatest during the SUO, LUN, and SLSQ. The progression for the GMed_ND activation was from least to greatest during the SLSQ, SUO, and then LUN. Activation levels of the ADD showed no progression.

Conclusion:

Progressive activation levels were documented for muscles acting on the hip joint during 3 functional lower extremity exercises. The authors recommend using this exercise progression when targeting the hip muscles during lower extremity strengthening.

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Doyglas R. Keskula, Jewell B. Duncan and Virginia L. Davis

This paper describes the rehabilitation of a patient following a medial meniscus transplant. Both preoperative and postoperative history and relevant physical findings are presented. Rehabilitation goals and the corresponding treatment plan are discussed, with an emphasis on functional outcomes. A general framework for treatment addressing impairment and functional goals is outlined. Progression of the rehabilitation program was based on surgical precautions and the patient's tolerance to the exercise progression. This case study demonstrates that appropriate surgical intervention combined with a properly designed rehabilitation program contributed to the improved functional abilities of this patient.

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Katrina G. Ritter, Matthew J. Hussey and Tamara C. Valovich McLeod

Clinicians should utilize an individualized plan of care that includes patient baseline scores and personalized progression based on subsymptomatic threshold values. Strength of Recommendation Level C evidence exists that aerobic exercise protocol is more effective than the current standard of care in

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Timothy J. Gibbons and Marie-Louise Bird

as more comfortable than the foam roller which may influence exercise enjoyment and adherence. Practical Applications (1) Exercises in supine with bilateral leg support should precede unilateral leg supported exercises in the progression of core stability tasks. (2) To progress in abdominal muscle

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Sergio Jiménez-Rubio, Archit Navandar, Jesús Rivilla-García, Víctor Paredes-Hernández and Miguel-Ángel Gómez-Ruano

progression in the progress of these parameters was found, indicating that the hamstring muscle complex not only recovered completely from the injury but could also withstand a greater training and match load. The most important improvements were observed in the peak speed (Max_Speed) and the distance run per

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Kate N. Jochimsen, Margaret R. Pelton, Carl G. Mattacola, Laura J. Huston, Emily K. Reinke, Kurt P. Spindler, Christian Lattermann and Cale A. Jacobs

undergoing ACLR, this study aimed (1) to longitudinally quantify the full preoperative and postoperative progression of pain catastrophizing from within 1 week of the ACL injury to 6 months post-ACLR and (2) to determine if preoperative or 6-month PCS scores were related with self-reported pain and function

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Semyon M. Slobounov, Robert Simon, Wayne Sebastianelli, Angela Carlson and William E. Buckley

A variety of assessment devices have been developed for scientific investigation on human movement that can also be used to assess the progress of a rehabilitation program. The present investigation was undertaken to show how this technology can be combined with the most aggressive type of medical intervention and rehabilitation. Advanced technology was used to assess the physical rehabilitation parameters of active range of motion (AROM) and sport-specific functional progression for an Olympic-caliber diver who had bilateral wrist problems. AROM was measured for both wrists using a Flock of Birds motion-tracking device, and functional progression was assessed with an Advanced Mechanical Technology Inc. force platform for measuring the center of pressure (CP) area. The results of the treatment were clinically favorable, with an increase in AROM and a decrease in the CP area for functional motor control. The technology provided useful information about the progress of a rehabilitation program.

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Emmanuel Jacobs, Nathalie Roussel, Ine Van Caekenberghe, Edith Cassiers, Luc Van den Dries, Jonas Rutgeerts, Jan Gielen and Ann Hallemans

This cross-sectional study aimed at developing a biomechanical method to objectify voluntary and unpredictable movements, using an automated three-dimensional motion capture system and surface electromyography. Fourteen experienced theater performers were tested while executing the old man exercise, wherein they have to walk like an old man, building up a sustained high intensive muscular activity and tremor. Less experienced performed showed a different kinematics of movement, a slower speed of progression and more variable EMG signals at higher intensity. Female performers also differed from males in movement kinematics and muscular activity. The number of the trial only influenced the speed of progression. The performers showed results which could be well placed within the stages of learning and the degrees of freedom problem.