UNLABELLED Osteoarthritis of the ankle can occur secondary to alteration of the articular surfaces, such as in the posttraumatic setting, or because of gradual degeneration as a result of biomechanical dysfunction. Although primary inflammatory ankle arthritis rarely occurs, the majority of cases of ankle osteoarthritis occur after bony trauma, ligamentous injury, congenital deformity, or previ...

Residual hip impairments, such as decreased hip muscle moment and power during walking, have been reported in patients with total hip arthroplasty (THA). Meanwhile, greater ankle power has also been reported in these patients. We investigated the interaction between hip and ankle joints during walking to determine the effects of different ankle pushoff instructions on hip biomechanics in patien...

OBJECTIVE: To outline rehabilitation concepts that are applicable to acute and chronic injury of the ankle, to provide evidence for current techniques used in the rehabilitation of the ankle, and to describe a functional rehabilitation program that progresses from basic to advanced, while taking into consideration empirical data from the literature and clinical practice. BACKGROUND: Important c...

Isolated syndesmosis injuries often go unrecognized and are diagnosed as lateral ankle sprains; however, they are more disabling than lateral ankle sprains. The reported incidence of isolated syndesmosis injuries in acute ankle sprains ranges between 1% and 16%. When ankle disability lasts for more than 2 months after an ankle sprain, the incidence increases to 23.6%. Diagnostic workup may incl...

We evaluated the incidence of heterotopic ossification following total ankle replacement to determine whether the degree of ossification was associated with the clinical outcome. We evaluated 90 ankles in 81 consecutive patients who underwent total ankle replacement, and heterotopic ossification was assessed according to proportional involvement of the ankle joint. Correlation analysis was used...

Introduction The ankle joint is the most commonly injured joint in the body and absorbs more force per square centimetre than any other joint. However, the incidence of ankle arthritis is nine times less common than symptomatic arthritis in the knee and hip. This paper reviews ankle arthritis. Discussion Post-traumatic arthritis is the most common form of ankle osteoarthritis. The most current ...

This article compares stochastic estimates of human ankle mechanical impedance when ankle muscles were fully relaxed and co-contracting antagonistically. We employed Anklebot, a rehabilitation robot for the ankle to provide torque perturbations. Surface electromyography (EMG) was used to monitor muscle activation levels and these EMG signals were displayed to subjects who attempted to maintain ...

BACKGROUND Ankle arthrodesis has been the gold standard operative treatment for ankle arthritis refractory to nonoperative treatment. Although multiple studies have evaluated the outcomes after ankle fusion, none has focused on outcomes in elderly patients. The purpose of this study was to evaluate outcomes of ankle fusion in patients over the age of 70. METHODS Thirty patients (30 ankles) ov...

Denervation of selected ankle extensors in animals results in locomotor changes. These changes have been suggested to permit preservation of global kinematic characteristics of the hindlimb during stance. The peak ankle joint moment is also preserved immediately after denervation of several ankle extensors in the cat, suggesting that the animal's response to peripheral nerve injury may also be ...

Some functions of walking are adversely affected in prosthesis users because of reduced or absent ankle motion. However, combining a prosthetic ankle unit with a particular prosthetic foot could have unanticipated consequences. This study investigated the effect of prosthetic ankle units on the gait of persons with bilateral transtibial amputations. Subjects were tested while walking with and w...