Pedobarographic findings in patients with knee osteoarthritis.
ABSTRACT The aim of this study was to evaluate pedobarographic findings and balance in knee osteoarthritis.
A total of 48 patients with knee osteoarthritis and 30 controls were included in this study. Pedobarographic measures were obtained from all patients and controls. Pain intensity of patients was measured using the Visual Analog Scale. The percentage of pressure on forefoot and hindfoot was measured using static pedobarography, and the peak pressures at forefoot, midfoot, and hindfoot were measured using dynamic pedobarography. The center-of-pressure sway length and width were measured for evaluation of balance.
The percentage of right hindfoot pressure (P < 0.05) and peak pressure of the right forefoot during walking were lower in the osteoarthritic group than in the controls (P < 0.05). The sway width in the patient group was higher than in the control group (P < 0.05). The Visual Analog Scale score at rest was negatively correlated with peak pressures of both right and left hindfeet in the osteoarthritic group (P < 0.05). The grade of osteoarthritis was positively correlated with sway length and sway width (P < 0.05).
Pedobarography may become a useful technique to determine foot pressures that change because of disturbed weightbearing and balance problems in knee osteoarthritis.
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ABSTRACT: To investigate neuromuscular and anatomic factors involved in varus gonarthrosis by identifying measures associated with degenerative changes. Descriptive study. Individual measures that explained substantial portions of the variability in ratings of knee joint-degenerative changes in patients with knee medial compartment osteoarthritis. Outpatient orthopedic clinic and biomechanics and muscular assessment laboratory. Volunteer sample of 20 subjects (age range, 59 +/- 9 yr) with no history of neurologic disease. Not applicable. We assessed degenerative changes, varus alignment, standing balance, and knee proprioception. Weight-bearing radiographs were used to assess the extent of degenerative changes and the degree of varus alignment. Single-limb standing balance control was assessed through tests performed on a force platform. Knee proprioception was assessed with an isokinetic dynamometer, using a joint angle replication test. Forward-stepwise multiple linear regression indicated that the extent of degenerative changes could be best predicted from a linear combination of the independent variables, varus alignment, and standing balance (R =.80, F(2,17) = 14.81, p =.0002). Sixty-four percent of the variability in ratings of degenerative changes was explained by alignment and standing balance measures (37% by varus alignment, 27% by standing balance). Alignment and balance measures were poorly correlated (r =.12, p =.63), further suggesting that they provided different information about gonarthrosis. Although varus alignment is widely accepted as a clinically important factor in gonarthrosis, and is the focus of many treatment efforts, our results suggest that objective measures of standing balance are also important. As a result, the potential impact of rehabilitation to improve the control of standing balance should be further evaluated in this patient population.Archives of Physical Medicine and Rehabilitation 09/2001; 82(8):1115-8. · 2.36 Impact Factor
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ABSTRACT: An economical method of recording peak pressures under the feet while standing or walking is described for clinical application. Normal values at 10 defined locations are presented. Correlation matrices indicate functional links between regions of support which influence patterns of deviation from the norms.Annals of the Rheumatic Diseases 01/1985; 43(6):816-8. · 9.11 Impact Factor
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ABSTRACT: Clinical and pedobarograph evaluation was performed on 16 patients following flexor hallucis longus (FHL) tendon transfers to determine the resulting morbidity due to the loss of FHL function. All patients underwent FHL tendon transfer for either chronic tendon Achilles rupture or chronic Achilles tendinosis. Clinical evaluation of hallux function was performed using the American Orthopaedic Foot and Ankle Society (AOFAS) hallux metatarsophalangeal-interphalangeal scale, the SF-36 score, and a clinical questionnaire to assess alteration in the clinical function of the hallux during activities of daily living. Pedobarography was carried out using the Musgrave pedobarograph system to detect changes in forefoot loading in comparison to the contralateral normal foot. Fourteen of the 16 patients scored maximally on the hallux metatarsophalangeal-interphalangeal scale and none of the patients noticed functional weakness of the hallux during activities of daily living at a mean follow-up of 43.6 months (range, 5-120 months). Pedobarograph readings showed a trend toward reduction in peak pressure loading on the distal phalanx, but this was not significant for the numbers of patients studied. There was no significant increase in loading of the first or second metatarsophalangeal joints to suggest that transfer metatarsalgia may complicate FHL tendon transfer. According to the results of the study morbidity from FHL transfer should be clinically insignificant.The Foot and Ankle Online Journal 01/2004; 24(12):931-4. · 1.47 Impact Factor