Current concepts: the stabilizing structures of the glenohumeral joint.

Significant contemporary advances have permitted a more comprehensive understanding and development of some interesting concepts about the glenohumeral joint. The purpose of this review paper was to discuss current concepts related to the anatomic stabilizing structures of the shoulder joint complex and their clinical relevance to shoulder instability. The clinical syndrome of shoulder instability represents a wide spectrum of symptoms and signs which may produce various levels of dysfunction, from subtle subluxations to gross joint instability.

Proximal tibiofibular subluxation relationship to lateral knee pain: a review of proximal tibiofibular joint pathologies.

Proximal tibiofibular subluxation is the symptomatic hypermobility of the proximal tibiofibular joint. Pain along the lateral aspect of the knee must be carefully evaluated as the anatomy and biomechanics of this region are very complex. Anatomical variants of the proximal tibiofibular joint may be key to understanding the pathomechanics and, thus, treatment of this joint.

The abductor and adductor strength characteristics of professional baseball pitcherse.

The purpose of this investigation was to establish a data base regarding the isokinetic muscular performance characteristics of the abductor and adductor muscles of professional baseball pitchers. Eighty-three healthy professional baseball pitchers (mean age, 22.6 years; mean weight, 199 pounds) were evaluated by use of a Biodex isokinetic dynamometer.

Rehabilitation of shoulder and elbow injuries in tennis players.

Optimization of treatment of the tennis player with an upper extremity overuse injury requires a thorough understanding and analysis of the biomechanical and physiologic stresses inherent in the game of tennis. Anatomic adaptations found in the upper extremity of elite tennis players provide the framework for evaluation and treatment of overuse injury through both an anatomically based total-arm strength program and efforts to normalize joint arthrokinematics. Integration of these key factors allows the clinician to rehabilitate the patient and design preventive conditioning programs in a scientifically based, sport-specific manner.

Quadriceps muscular strength after removal of the central third patellar tendon for contralateral anterior cruciate ligament reconstruction surgery: a case study.

Surgical reconstruction of the anterior cruciate ligament (ACL) using a patellar tendon autograft is a common orthopaedic procedure. Complications such as arthrofibrosis, patellar fracture, significant donor site pain, and quadriceps muscle weakness can occur from this procedure. Previous studies have not documented the effects of isolated graft procurement without concomitant ligamentous reconstruction on the donor extremity.

The strength characteristics of internal and external rotator muscles in professional baseball pitchers.

The purpose of this study was to establish a data base regarding the isokinetic muscular performance characteristics of the external/internal rotator muscles of professional baseball pitchers. One hundred fifty healthy professional baseball pitchers were evaluated by use of a Biodex isokinetic dynamometer. The subjects tested had a mean age of 23.