Journal of Orthopaedic & Sports Physical Therapy - Bruce Brownstein, PT, MBA

Quadriceps Torque and Integrated Electromyography*

Thu, 18 Sep 2008 00:00:00 EST

Bruce Brownstein, Robert E. Lamb, Robert E. Mangine
Using surface electromyography, the myoelectric activity and torque of the quadriceps muscles were recorded under isometric conditions. The purpose of the study was to identify the optimal angle of knee flexion for normalization purposes. Additionally, the behavior of the quadriceps as the knee was flexed was investigated. It was found that the subject's sex may affect the angle at which maximal torque and integrated electromyography (lemg) occurs. Maximal torque and lemg occurred at 50° for males and 70° for females. This may have an effect on the normalization procedure when the quadriceps is studied dynamically. The location of maximal myoelectric activity of the quadriceps should influence our treatment of patellofemoral disorders when patellar biomechanics are considered.

J Orthop Sports Phys Ther 1985;6(6):309-314.

Profile of Dance Injuries in a Broadway Show: A Discussion of Issues in Dance Medicine Epidemiology

Mon, 05 Feb 2007 09:45:00 EST

Shaw Bronner, Bruce Brownstein

A description of dance injuries in a Broadway show using ballet technique is reported for the first time. Presentation of this material is used as a vehicle to discuss issues in dance epidemiology and etiology. As interest and research in dance medicine increases, standardization of reporting methods and definitions becomes critical in discussions of epidemiology and etiology. Borrowing from sports medicine classifications, which define sports injury as "time lost from play," we suggest dance injury be defined as "time lost from performing". The overall injury rate was 40.0%, which was low compared with those of classical ballet companies. The majority of injuries involved the foot and ankle, similar to previous reports of classical ballet companies. Reasons for the low injury rates and types of injuries are discussed. The information necessary to facilitate comparison of data with other studies is outlined. We hope this article will contribute to further discussion regarding adoption of universal language and details necessary for reporting injury. Additional areas of research are suggested.

J Orthop Sports Phys Ther. 1997;26(2):87-94.

Key Words: dance injuries, injury classification, Broadway dance

Patella Fractures Associated With Accelerated ACL Rehabilitation in Patients With Autogenous Patella Tendon Reconstructions

Mon, 05 Feb 2007 09:45:00 EST

Bruce Brownstein, Shaw Bronner

Patella fracture is a recognized complication of ACL reconstruction with an autogenous patella tendon graft. Typically, fracture occurs as a result of a fall. The incidence of fracture is ~0.5%. Accelerated rehabilitation protocols can place stress on the patella, especially in the initial stages of recovery. Therapists are reminded to observe constraints placed on patients by biological tissues, recovering neuromuscular status, and previous level of conditioning. Rehabilitation protocols should be revised according to these factors.

J Orthop Sports Phys Ther. 1997;26(3):168-172.

Key Words: anterior cruciate ligament, biomechanics, rehabilitation, knee