Assessing the accuracy of patient-specific guides for total knee arthroplasty.

Purpose: Patient-specific guides have been introduced recently as a means of making accurate bone cuts through custom cutting blocks constructed based on pre-operative three-dimensional imaging. However, the controversy concerning the improved results of patient-specific guides have not been resolved yet; in addition, there have been no studies to investigate the causes of variable with inconsistent results and solutions for the causes.

Methods: Thirty eight patients (38 knees) underwent total knee arthroplasty with patient-specific guides.

Comparison of Arthroscopic Microfracture for Osteochondral Lesions of the Talus With and Without Subchondral Cyst.

Background: Although various treatment modalities for an osteochondral lesion of the talus (OLT) with a subchondral cyst have been recommended previously, the primary treatment methods for such conditions have yet to be conclusively determined. Moreover, few comprehensive studies have compared the outcomes of cases where patients were treated with microfracture for OLT with and without subchondral cysts.

Purpose: To evaluate the clinical outcomes after arthroscopic microfractures performed as a primary treatment for OLT with a subchondral cyst.

Comparison of chondral versus osteochondral lesions of the talus after arthroscopic microfracture.

Purpose: To compare the outcomes of arthroscopic microfracture for chondral and osteochondral lesions of the talus, and to identify the characteristics.

Method: One hundred and four ankles were divided into two groups, namely chondral group (58 ankles) and osteochondral group (46 ankles). The chondral group consisted of 37 men and 21 women with a mean age of 41.

Toe component excision in postaxial polydactyly of the foot.

Background: Polydactyly of the fifth toe is the most common congenital malformation of the forefoot, and no consensus has been reached as to which toe component should be excised or by which surgical technique. The purpose of this study was to evaluate the results of the operative treatment of postaxial polydactyly and to offer treatment guidelines.

Method: We retrospectively reviewed the details of 27 patients with postaxial polydactyly (36 feet) treated from September 2004 to March 2010.

Multicentric giant cell tumor in adolescents: three case reports.

The presentation of multicentric giant cell tumor in adolescents with an open physis is very rare. We report three cases of a multicentric giant cell tumor of the bone in adolescents, and a review of the literature is also presented.

Simultaneous bilateral total knee arthroplasty with robotic and conventional techniques: a prospective, randomized study.

Purpose: The authors performed this study to compare the outcomes of robotic-assisted and conventional TKA in same patient simultaneously. It was hypothesized that the robotic-assisted procedure would produce better leg alignment and component orientation, and thus, improve patient satisfaction and clinical and radiological outcomes.

Methods: Thirty patients underwent bilateral sequential total knee replacement.

Comparison of the outcomes of distraction osteogenesis for first and fourth brachymetatarsia.

Background: Brachymetatarsia is the presence of an abnormally short metatarsal, and distraction osteogenesis has been used for its treatment. The purpose of the present study was to compare the outcomes of patients who underwent distraction osteogenesis for the treatment of first and/or fourth brachymetatarsia.

Methods: The data from forty-eight patients (sixty-four feet, seventy-four metatarsals) who underwent distraction osteogenesis for the treatment of brachymetatarsia were reviewed.