Biomedical subjects

Joy C MacDermid

Publications and source records attributed to Joy C MacDermid.

39 records · Page 3Linked to original sources

PubMedDate not supplied

Examination of the elbow: linking diagnosis, prognosis, and outcomes as a framework for maximizing therapy interventions.

A conceptual framework for examination of the elbow by the therapist is presented. The role of history taking including patient life-style factors, comorbidities and goals; pain assessment; utility of provocative maneuvers and range of motion analysis are presented. Assessment of strength using hand-held dynamometry is described. Pain and disability measures relevant to patients with elbow pathology are discussed and one patient self report instruments is appended (the Patient-rated Elbow Evaluation). The psychometrics properties of tests for the elbow, when available, are reviewed. A template for recording an elbow examination is provided.

Elbow Joint↗

PubMedDate not supplied

The impact of wrist extension provocation on current perception thresholds in patients with carpal tunnel syndrome: a pilot study.

PURPOSE: To determine whether current perception threshold (CPT) varied between subjects with and without carpal tunnel syndrome (CTS) and whether positioning in wrist extension (reversed Phalen's test) was provocative. METHOD: Subjects (n=30) were tested using the Neurometer (Neutron, Inc., Baltimore, MD) at 5, 250, and 2,000 Hz in a rest and reverse Phalen's position. Group and positional differences were analyzed using analysis of variance. RESULTS: Higher CPT occurred at 2,000 Hz in both rest (p=0.02) and reverse Phalen's position (p=0.01) in CTS subjects. There was also a significant change in CPT in the CTS group following wrist extension, particularly at 2,000 Hz (p<0.05). CONCLUSION: A positional effect on sensibility was noted at 2,000 Hz in subjects with CTS. Further evaluation is required to determine the role and optimal test protocols for provocative-sensory testing in diagnosis and outcome assessment of CTS. For CPT these should focus on using the 2,000 Hz frequency.

Adult↗

PubMedDate not supplied

Age and upper limb tension testing affects current perception thresholds.

Current perception threshold (CPT) testing was used to quantitatively measure the sensory response to upper limb tension testing (ULTT). The study addressed the ability of ULTT to tension the intended nerve, and the influence of age on CPT. Normal subjects (n=59) performed a randomized series of CPT tests at 5 and 2,000 Hz in a resting position and in a median-nerve bias position using the Neurometer. Results indicate that ULTT impacts CPT in normal subjects, with greater effects observed in the ulnar nerve (p<0.05) than for median nerve (NS). Age was a significant covariate for CPT (2,000 Hz, p=0.032; 5 Hz, p=0.034), and Pearson correlations indicated a weak but significant correlation of age with CPT. Age had a differential impact on CPT frequencies, suggesting differential impacts on nerve fibers, with a trend towards hypoesthesia at 2,000 Hz (r=0.10 to 0.30) and toward hyperesthesia at 5 Hz (r=-0.16 to -0.28). ULTT causes measurable effects in the sensory threshold of peripheral nerve, which are more pronounced with age; increased touch threshold and decreased pain thresholds can be expected. The specificity of nerve bias elicited by specific ULTT needs further exploration.

Adult↗