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At least 1,423 records · Page 79Linked to original sources
PubMed2006

Prevalence and involvement patterns of radiographic hand osteoarthritis in Japanese women: the Hizen-Oshima Study.

The prevalence and pattern of joint involvement in radiographic hand osteoarthritis (OA) have been reported in Western populations, but similar data are lacking for Japanese. We examined this issue in 551 Japanese women aged > or = 40 years. Radiographs were obtained of both hands and graded according to the Kellgren-Lawrence (K-L) criteria. OA was defined as K-L grade 2 or higher. The prevalence of radiographic OA in the IP, MCP, and CMC joints was distributed similarly in both hands. The most frequent locations of radiographic OA were the distal IP joints of the index finger, the IP joint of the thumb, and the distal IP joints of the middle finger, in this order. The prevalence of radiographic OA in each joint group increased significantly with age, and that in Japanese women was lower in the thumb CMC joint and higher in the thumb IP joint compared to those in Caucasian women reported previously. The strongest predictor for the presence of radiographic OA in a particular joint was the disease status in the same joint of the opposite hand (OR = 18.5; 95% CI; 15.2-22.7), followed by the joints in the same row of the same hand (OR = 15.5; 95% CI, 11.9-20.1), and then by the joints in the same ray of the same hand (OR = 1.3; 95% CI, 1.0-1.6). Although the prevalence of hand OA is likely to show site-specific differences between Japanese and Caucasian women, our results indicate that both groups show similar involvement pattern symmetrically and in the same row of the same hand.

Aged↗
PubMed1983

Anomalies of the intrinsic muscles in camptodactyly.

Our observations support the view of Millesi that camptodactyly is due to an imbalance between the flexor and extensor forces acting upon the proximal interphalangeal joint. In 21 consecutive operations the insertion of the lumbrical muscle was abnormal. The muscle inserted into either the superficialis tendon (in three cases), the capsule of the metacarpophalangeal joint (in 15), or the extensor expansion of the adjacent finger (in four). The fourth palmar interosseous muscle was examined in the last 10 patients and was abnormal in five. It was absent in two patients, small in one, and inserted into the extensor expansion of the ring finger in two patients. Therefore, it is suggested that camptodactyly is an intrinsic minus deformity. It follows that treatment should consist of soft tissue release, as necessary, to correct the flexion deformity, followed by a tendon transfer to restore intrinsic action and maintain correction of the deformity.

Adolescent↗
PubMed1988

Position sense at the proximal interphalangeal joint of the human index finger.

1. The ability of eleven normal subjects to match the position of the proximal interphalangeal joints was tested. The right index finger (target finger) was moved to a given position and the subject was required to match this with the left index finger (matching finger). 2. Digital nerve block of the matching finger resulted in substantial impairment in matching performance in seven out of eight subjects. 3. Anaesthesia of the target finger in two subjects also produced obvious position matching deficit, in a pattern consistent with subjective sensation of target finger position. 4. The effects of digital nerve block were specific, as neither injection of saline into the matching finger, nor anaesthesia of adjacent fingers, impaired performance. 5. In one subject, injection of local anaesthetic into the synovial cavity of the matching finger also resulted in impairment of matching performance, indicating that articular receptors contribute to position sense at this joint. 6. Passive displacement of the matching finger did not produce significantly greater errors than those occurring with active finger positioning either under control conditions or during digital nerve block of the matching finger. 7. Although digital nerve block produced substantial impairment of matching performance, there was not complete loss of proprioceptive sensation, suggesting that muscle receptors also contribute. This was confirmed in experiments where isotonic loading of the matching finger while it was anaesthetized resulted in significant alteration in matching performance compared to anaesthesia alone. 8. It is concluded that no one source of afferent input can be excluded from contributing to proprioception at the index finger. It is likely that under different operating conditions several afferent sources are required to provide optimal proprioceptive resolution.

Adult↗
PubMed1995

Swan-neck deformity as a complication of the Agee technique.

Unstable dorsal fracture dislocations of the PIP joint of a finger commonly result in joint stiffness following immobilization or open reduction and internal fixation (Green and Rowland, 1984). The Agee dynamic external fixator, or force couple splint (Agee, 1978; 1987), was introduced in an attempt to avoid this complication and maintains a concentric reduction whilst allowing a full range of joint movement. The splint is constructed from three Kirschner wires and is activated by a single rubber band. A force couple is created across the proximal interphalangeal joint levering the base of the middle phalanx towards the palm whilst simultaneously lifting the distal end of the proximal phalanx dorsally to restore joint reduction. However, this technique is not without complications (Agee, 1987). We report a swan-neck deformity resulting from this treatment.

External Fixators↗