Biomedical subjects
Publications and source records attributed to G V Yu.
Chondroblastomas are rare cartilaginous tumors that are found in the foot or ankle. They are usually located in portions of the humerus, tibia, or femur, and comprise approximately 1 to 3% of all osseous tumors. This is a unique case report of a chondroblastoma involving the talus of a young individual.
Aneurysmal bone cysts are benign, expansile lesions that are not at all uncommon in the lower extremity. These lesions are difficult to recognize clinically. This paper is a thorough review of the current literature regarding aneurysmal bone cysts. After this review, one should be able to diagnose and appropriately treat aneurysmal bone cysts. Also provided is a case report with classic histologic, clinical, and radiographic findings that was treated by en bloc resection.
A new parameter, the tibial sesamoid-second metatarsal distance, was established to determine whether the sesamoids move in relation to the foot in hallux abducto valgus surgery. The reliability of the tibial sesamoid-second metatarsal distance was assessed and shown to be excellent. Seventy-five feet underwent surgical correction of hallux abducto valgus. Four radiographic parameters--the intermetatarsal angle, the hallux abductus angle, the tibial sesamoid position, and the tibial sesamoid-second metatarsal distance--were measured before and after surgery. The hallux abductus angle, intermetatarsal angle, and tibial sesamoid position were all significantly reduced following surgery. The tibial sesamoid-second metatarsal distance was not affected by hallux abducto valgus correction. Thus the correction in sesamoid position gained with hallux abducto valgus correction is a direct result of lateral translocation of the metatarsal head, with no contribution from change in position of the sesamoid apparatus relative to the foot.
The efficacy and safety of cefadroxil in eradicating localized skin and skin-structure infections of the foot were investigated in a retrospective chart review of 222 consecutive patients from two private practices seen over a 10-year period. Of the 189 patients for whom follow-up data were available, 187 (99%) received cefadroxil 500 mg twice daily, and 2 patients (1%) received 250 mg twice daily. The duration of therapy was 2 weeks or less in 87% of patients, with a median duration of therapy of 11.4 days (range, 5 to 35 days). Of the 189 clinically evaluable patients, 179 (95%) achieved a favorable clinical response to treatment; of the 57 patients with microbiologic cultures, 54 (95%) experienced a satisfactory bacteriologic response to therapy; no adverse events related to cefadroxil therapy were identified during the review. The overall results from this retrospective study suggest that cefadroxil is an effective agent with a favorable safety profile for the treatment of skin and skin-structure infections of the foot.
The authors differentiate benign rheumatoid nodules from similar subcutaneous lesions based on location and pathologic characteristics. Although many of these lesions spontaneously resolve, recurrence rates may be high. Various therapeutic modalities are therefore suggested. An illustrative case study is presented.
The treatment of pediatric deformities is relatively common in the typical foot and ankle practice. Talipes calcaneovalgus deformity represents one of the more prevalent deformities. This postural deformity, which is present at birth, is characterized by marked dorsiflexion and valgus position of the foot in relation to the leg. It is essential that an accurate diagnosis is established early and conservative treatment instituted. In most cases, the deformity is highly responsive to conservative therapy consisting of manipulation and casting. Deformity not identified at birth or soon thereafter, or residual deformity treated later in life, presents a greater challenge to the physician. This paper is intended to provide an overview of the deformity of calcaneovalgus including a discussion of etiology, incidence, clinical and radiographic manifestations, differential diagnosis, and recommended treatment. The authors present an unusual case of residual talipes calcaneovalgus left untreated since birth and the approach to management.
The authors present an interesting approach to lateral ankle stabilization using the peroneus longus tendon. The more commonly utilized procedures for instability of the ankle complex, rationale for use of the peroneus longus tendon, and the details of the split peroneus longus lateral ankle stabilization procedure are presented. When evaluating patients with lateral ankle joint instability, the subtalar joint (STJ) complex needs to be assessed. In addition, the role of STJ instability and its relationship to lateral ankle joint instability are discussed.
Plantar fibromas are a disease entity that are encountered by all foot surgeons. When a tentative diagnosis is made, aggressive surgical resection of the mass and the plantar fascia is necessary to prevent recurrence. Presented in this paper is a review of the literature and clinical illustrations of recurrent plantar fibromatosis with long-term follow-up.