Predicting Short-Term Response to Thrust and Nonthrust Manipulation and Exercise in Patients Post Inversion Ankle Sprain

Fri, 24 Oct 2008 00:00:00 EST

Julie M. Whitman, Michael A. Keirns, Melanie L. Bieniek, Stephanie R. Albin, Jake S. Magel, Thomas G. McPoil, Joshua A. Cleland, Paul E. Mintken
STUDY DESIGN: Prospective-cohort/predictive-validity study. OBJECTIVES: To develop a clinical prediction rule (CPR) to identify patients who had sustained an inversion ankle sprain who would likely benefit from manual therapy and exercise. BACKGROUND: No studies have investigated the predictive value of items from the clinical examination to identify patients with ankle sprains likely to benefit from manual therapy and general mobility exercises. METHODS AND MEASURES: Consecutive patients with a status of post inversion ankle sprain underwent a standardized examination followed by manual therapy (both thrust and nonthrust manipulation) and general mobility exercises. Patients were classified as having experienced a successful outcome at the second and third sessions based on their perceived recovery. Potential predictor variables were entered into a stepwise logistic regression model to determine the most accurate set of variables for prediction of treatment success. RESULTS: Eighty-five patients were included in the data analysis, of which 64 had a successful outcome (75%). A CPR with 4 variables was identified. If 3 of the 4 variables were present the accuracy of the rule was maximized (positive likelihood ratio, 5.9; 95% CI: 1.1, 41.6) and the posttest probability of success increased to 95%. CONCLUSIONS: The CPR provides the ability to a priori identify patients with an inversion ankle sprain who are likely to exhibit rapid and dramatic short-term success with a treatment approach, including manual therapy and general mobility exercises. LEVEL OF EVIDENCE: Prognosis, level 2b.

J Orthop Sports Phys Ther 2009;39(3):188-200, Epub 24 October 2008. doi:10.2519/jospt.2009.2940

KEY WORDS: ankle pain, clinical prediction rule, manual therapy

Stretch-Shortening Drills for the Upper Extremities: Theory and Clinical Application

Mon, 08 Sep 2008 00:00:00 EST

Kevin E. Wilk, Michael L. Voight, Michael A. Keirns, Vern Gambetta, Charles J. Dillman, James R. Andrews

Enhanced athletic performance emphasizes the muscle's ability to exert maximal force output in a minimal amount of time. Exaggerated maximal muscular force develops due to athletic movements producing a repeated series of stretch-shortening cycles. The stretch-shortening cycle occurs when elastic loading, through an eccentric muscular contraction, is followed by a burst of concentric muscular contraction. A form of exercise called plyometrics employs a quick, powerful movement involving a prestretch of the muscle, followed by a shortening, concentric muscular contraction, thus utilizing the stretch-shortening muscular cycle. The literature contains numerous references to plyometric training for the lower extremity, but there is a lack of information on the upper extremity plyometric program. Overhead activities, such as throwing, necessitate elastic loading to produce maximal, explosive, concentric muscular contractions. Plyometric exercise employs the concept of the stretch-shortening muscular cycle. The rehabilitation concept of specificity of training suggests plyometric exercise drills should be performed by the throwing athlete. This paper discusses the basic neurophysiological science and theoretical basis for plyometric exercise, and it describes an upper extremity stretch-shortening exercise program for the throwing athlete.

J Orthop Sports Phys Ther 1993;17(5):225-239.

Key Words: stretch-shortening cycle, exercise, muscle spindle

Journal of Orthopaedic & Sports Physical Therapy - Michael A. Keirns, PT, MA, ATC, SCS

Predicting Short-Term Response to Thrust and Nonthrust Manipulation and Exercise in Patients Post Inversion Ankle Sprain

Stretch-Shortening Drills for the Upper Extremities: Theory and Clinical Application