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To evaluate the normal range of motion of the cervical spine, 70 healthy subjects were studied using radiography and clinical examination. An equal number of men and women were studied; age ranged from 12 to 79 years. Radiographs were taken in the lateral projection during maximal flexion and extension. In the frontal projection, radiographs were taken(More)
In this study we hypothesised that anxiety/depression, one of five dimensions in the health-related quality of life (HRQoL) measurement tool EQ-5D, could predict outcome after total hip replacement surgery. Pre-operative and one-year post-operative data from the Swedish Hip Arthroplasty Register, including 6158 patients with primary osteoarthritis of the(More)
OBJECTIVE To assess the failure rate of cemented, uncemented, hybrid, and reverse hybrid total hip replacements in patients aged 55 years or older. DESIGN Register study. SETTING Nordic Arthroplasty Register Association database (combined data from Sweden, Norway, Denmark, and Finland). PARTICIPANTS 347,899 total hip replacements performed during(More)
BACKGROUND A high quality decision requires that patients who meet clinical criteria for surgery are informed about the options (including non-surgical alternatives) and receive treatments that match their goals. The aim of this study was to evaluate the psychometric properties and clinical sensibility of a patient self report instrument, to measure the(More)
BACKGROUND There is currently a paucity of devices available for continuous, long-term monitoring of human joint motion. Non-invasive, inexpensive devices capable of recording human activity and joint motion have many applications for medical research. Such a device could be used to quantify range of motion outside the gait laboratory. The purpose of this(More)
The Swedish Total Hip Replacement Registry began in 1979 to describe the outcome of primary hip replacements and to provide information regarding serious complications. The importance of the register and the continual quality improvement over the long-term has been well documented (Herberts et al, 1989; Herberts et Malchau, 1997; Malchau et al, 1993). The(More)
Open Access-This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the source is credited. were included. Kaplan-Meier survival analysis was used to calculate survival probabilities with 95% confidence interval (CI). Cox(More)
The arrival of copious and cheap flash memory, as well as micromanufacturing techniques, permitted us to generate a pager-sized whole-body activity and knee range of motion monitor - and record these kinematics continuously at 32 Hz for two days on a single AA battery. Thus, we report here data from a healthy convenience sample of 5 males and 5 females, and(More)
BACKGROUND AND PURPOSE Rehabilitation of patients with transfemoral amputations is particularly difficult due to problems in using standard socket prostheses. We wanted to assess long-term fixation of the osseointegrated implant system (OPRA) using radiostereometric analysis (RSA) and periprosthetic bone remodeling. METHODS 51 patients with transfemoral(More)
Due to the uneven and often inadequate quality of cross-table lateral hip radiographs, many radiographic studies of femoral head penetration into polyethylene in total hip arthroplasty are limited to the two-dimensional measurement of femoral head penetration using the A/P film only. We postulated that the use of two oblique frontal projections at 90(More)