Athletes with shoulder pathology consistently demonstrate abnormalities in scapular rotator activity, suggesting that muscle dysfunction is a factor to consider in the aetiology or recurrence of shoulder pain. However, one important measure of the coordinated activity between the scapular rotators, their timing or temporal recruitment pattern, remains undetermined. The purposes of this study were to 1. provide normative data on the temporal recruitment pattern of the scapular rotators in freestyle swimmers, 2. determine the effect of a unilateral shoulder injury on this pattern, 3. determine whether these effects extend to the non-injured side, and 4. determine the effect of injury on the consistency (variability) of muscle recruitment. Surface EMG data for the upper and lower trapezius and serratus anterior were recorded bilaterally from two groups of competitive freestyle swimmers during controlled bilateral elevation in the plane of the scapula. An injured group comprising nine swimmers with unilateral shoulder pathology and a control group of nine non-injured swimmers were included. Temporal data determined for the onset of muscle activation for each muscle were then compared between groups using an ANOVA and a one-sided F test. The results of the study indicate that in non-injured swimmers, upper trapezius is activated 217 ms prior to shoulder motion, followed by serratus anterior activation 53 ms after motion commences. Lower trapezius was not recruited until 349 ms after shoulder motion, when the arm had attained 15 degrees elevation. In injured swimmers, all three muscles on the injured side displayed significantly increased variability in the timing of activation (p < 0.05), whilst the serratus anterior was significantly delayed in its activation on the non-injured side (p < 0.05). Skill hand preference was shown to have no effect on muscle recruitment. The findings of this study indicate that a relationship does exist between shoulder injury and the temporal recruitment patterns of the scapular rotators, such that injury reduces the consistency of muscle recruitment. They further suggest that injured subjects have muscle function deficits on their unaffected side.

Hip pathology is common amongst athletes and the general population. The mechanics of cycling have the potential to exacerbate symptomatic hip pathology and progress articular pathology in patients with morphologic risk factors such as femoroacetabular impingement. A professional fit of the bicycle to the individual which aims to optimize hip joint function can allow patients with hip pathology to exercise in comfort when alternative high impact exercise such as running may not be possible. Conversely improper fit of the bicycle can lead to hip symptoms in otherwise healthy individuals who present with risk factors for hip pain. Accordingly a bike fit can form part of the overall management strategy in a cyclist with hip symptoms. The purpose of this clinical commentary is to discuss hip pathomechanics with respect to cycling, bicycle fitting methodology and the options available to a physical therapist to optimize hip mechanics during the pedaling action.

Study Design: Case report. Background: Athletic Lisfranc injuries are characterized by disruption of the soft tissues about the tarsometatarsal joint complex. They are frequently missed on initial consultation due to a paucity of demonstrable physical signs, yet often result in significant disability. This case illustrates the 2 great challenges in managing these injuries: firstly, arriving at an accurate diagnosis and, secondly, determining whether the injury is stable and, therefore, appropriate for conservative management. Case Description: The athlete was a 21-year-old professional basketball player with a recurrent ligamentous injury of the Lisfranc joint. A global approach to evaluation and treatment of the entire lower extremity and pelvis in managing this injury is emphasized. Outcomes: The athlete in this case report made a successful return to his previous level of competition 12 weeks postinjury. At 2-year follow-up he continues to play professionally without any symptoms. Discussion: In selected cases for which patients have no osseous displacement and the ability to run on the toes soon after injury, conservative management of Lisfranc injury may be appropriate. Key features of a conservative approach include recognition of a prolonged recovery time, adequate rest for soft tissue healing, restoration of a normal gait pattern to prevent chronic overstress of injured tissues, appropriate orthotic prescription, and proprioceptive retraining. Ther 2005;35:154-164. J Orthop Sports Phys