Search PubMed⌕ Search

Biomedical subjects

W R Hobbs

Publications and source records attributed to W R Hobbs.

7 recordsLinked to original sources
PubMed2001

Evaluation and management of shoulder instability in the elite overhead thrower.

The elite throwing athlete places significant forces on the soft-tissue stabilizers of the shoulder with every pitch. Anterior translation forces can be as high as 40% of body weight and distraction forces as high as 80% body weight during the act of throwing. Injury to the static and dynamic stabilizers can lead to significant pain and loss of function in these athletes. To successfully treat the injured thrower, it is important to accurately diagnose the pathologic process. This article reviews the biomechanics of throwing and pathologic processes seen in the elite thrower. We cover the essentials of the history and physical in this population and conclude with a discussion of the various treatment regimens.

Baseball↗
PubMed1997

The cervical spine in Marfan syndrome.

STUDY DESIGN: Prospective radiographic and clinical analysis of a consecutive unselected population of persons with Marfan Syndrome. OBJECTIVES: To determine cervical spine abnormalities present in the Marfan population compared with that seen in the general population. SUMMARY OF BACKGROUND DATA: In the treatment of a large population of patients with Marfan Syndrome, three serious cervical spine disorders were noted. To the authors' knowledge, no report of cervical abnormalities in patients with Marfan Syndrome exists in the literature. Therefore, the cervical spine in these patients was studied in a systematic fashion. METHODS: An unselected group of 104 consecutive patients with Marfan Syndrome seen at a medical genetics follow-up examination underwent lateral neutral and flexion-extension cervical spine radiographs. Parameters of alignment, size, and stability were measured. Patients with Marfan Syndrome aged 35-45 years and matched controls were given a pain questionnaire to complete. RESULTS: The prevalence of focal kyphosis was 16%. A large number of patients with Marfan Syndrome (54%) had increased atlantoaxial translation. The preadolescent Marfan population has a greater range of motion than either the adolescent or adult populations. The Marfan population has an increased radiographic prevalence of basilar impression (36%), and the odontoid height (3.69 +/- 0.53 cm) was larger than reported norms (2.34 +/- 0.22 cm). Cervical stenosis was rare, with 3% having a critical Torg ratio at C3 and 2% having a critical Torg ratio at C6. Neck pain frequency did not differ significantly from that of age-matched controls. CONCLUSION: Based on the increased prevalence of several cervical bony and ligamentous abnormalities, patients with Marfan Syndrome were recommended to avoid sports with risks of high-impact loading of the cervical spine. Given the rarity of actual neurologic injuries in the Marfan population, however, radiographs for all patients with Marfan Syndrome undergoing general anesthesia is not recommended.

Adolescent↗
PubMed1988

Different rates of improvement of different symptoms in combined pharmacological and behavioral treatment of agoraphobia.

This study was designed to see whether the high vs low serum level of imipramine influenced the outcome of in vivo exposure therapy on patients with agoraphobia. Thirty-six subjects completed the Hopkins Symptom Checklist-90 one week before treatment and weekly throughout treatment. Both groups demonstrated equal improvement. It was noted that the rate of improvement differed for different symptom subscales: (1) Hostility, Paranoia and Psychotic symptom ratings improved over the first three weeks of treatment, (2) Interpersonal Sensitivity, Anxiety and Depression ratings improved throughout the first seven weeks of treatment and (3) Phobic Anxiety, Somatization and Obsessive Compulsure symptom ratings continued to improve throughout the entire 12 week course of treatment. Responsive vs nonresponsive subjects could be significantly differentiated after one week of treatment on the basis of their responses to the Psychoticism subscale.

Adolescent↗