Thesis (M.S.)--West Virginia University, 2005. / Title from document title page. Document formatted into pages; contains vi, 91 p. : ill. (some col.). Includes abstract. Includes bibliographical references.

BACKGROUND: Total wrist arthroplasty (TWA) is a surgical option for treatment of end-stage wrist arthritis and other debilitating wrist conditions. Despite improvements in the TWA implant and procedure, there are still many complications after an initial TWA. The most common complications include infection, hardware loosening, and tendon rupture. These complications are indications for an unplanned reoperation after an initial TWA. OBJECTIVE: The purpose of this retrospective study was to determine the rate of reoperation and implant removal after TWA. We tested the null hypotheses that there are no demographic or surgery-related factors associated with an unplanned reoperation or implant revision after a TWA. We also studied the secondary question whether there were radiographic features that predicted reoperation or implant revision after a TWA. METHODS: We used Current Procedural Terminology (CPT) codes to identify all 29 consecutive TWAs performed at two academic medical centers between 2002 and 2015. We manually reviewed medical records to collect demographic (age, sex), patient- or disease-related (tobacco use, indication of rheumatoid arthritis, prior wrist surgery) and surgery-related (implant type) factors. Reoperation was defined as any unplanned wrist surgery related to the TWA. We used a Fisher’s exact test to compare the proportions of categorical variables and a Mann-Whitney-U test to compare the average age among wrists that did and did not undergo reoperation and implant removal, and calculated P-values. RESULTS: The rate of reoperation was 48% (14 of 29 TWAs performed); of which 34% (10 of 29) underwent implant removal. The most common indication for reoperation was component loosening, which occurred in 5 wrists. Five patients had wrist surgery prior to their TWA, of whom 4 eventually had their implant removed (p = 0.036). No other factors were associated with reoperation or implant removal. CONCLUSIONS: We found that reoperation and implant removal after TWA are common. Despite improvements, approximately 1 in 3 wrists are likely to undergo revision surgery. Prior wrist surgery was the only risk factor statistically associated with implant removal after TWA. Patients should be counseled of the high rate of reoperation and implant removal before electing to undergo TWA when considering all treatment options for end-stage wrist arthritis. / 2019-07-11T00:00:00Z

Thesis (M.Sc.)--York University, 2007. Graduate Programme in Kinesiology and Health Science. / Typescript. Includes bibliographical references (leaves 76-88). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR29623

Thesis (M.S.)--Western Washington University, 2005. / Includes bibliographical references (leaves 114-123). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.

Thesis (M.S.)--Western Washington University, 2005. / Includes bibliographical references (leaves 114-123).

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Little is known, from a clinical perspective, about the use of wrist motion during daily living activities. This work aimed to identify an informative list of physical tasks that could be measured practically in a clinical setting. <br /> Measurement methods including data gloves were investigated, but these were not used for reasons of practicality and accuracy. A commercial electrogoniometer system was chosen and used to measure wrist motion in flexion/extension and radial/ulnar deviation planes while eighteen right-handed, healthy, volunteer subjects (twelve male and six female, aged 23 to 56 years, mean 29.9 years) carried out mock-ups of the twelve everyday tasks listed in the Michigan Hand Questionnaire. <br /> The 2-plane data from each task-measurement test were displayed on an angle-angle scatter plot, overlaid with an elliptical, estimated maximum-motion envelope. <br /> The mean ranges of motion, averaged over all eighteen subjects, varied widely between tasks: 1.3° of flexion/extension (S.D. 1.49°) and 1.4° of radial/ulnar deviation (S.D. 2.10°) were seen while holding a glass of water, and corresponding values of 61.4° (S.D. 12.1°) and 24.3° (S.D. 7.79°) while buttoning a shirt. Frequency plots were also generated to show which wrist positions were most commonly used during the tasks. <br /> Qualitative and quantitative methods were used to reduce the original task list to just four tasks which represented a wide range of aspects of wrist motion, including large mean ranges of motion and mean locations that were displaced away from the neutral wrist position. <br /> These four short-listed tasks (holding a frying pan, turning a key in a lock, holding a glass of water and buttoning a shirt) could all be carried out whilst seated, with little reliance on other physiological joints and with low-cost props. <br /> The overall approach described in this thesis could be refined into a useful clinical tool, either for identifying motion impairments tracking individual patients’ progress. In particular, the use of the elliptical estimated motion envelopes gave immediate and useful context to the task data.

Thesis (M. Phil.)--University of Hong Kong, 2002. / Includes bibliographical references.

Thesis (M. Med. Sc.)--University of Hong Kong, 2007.