The rotating hinge knee prosthesis is a popular intervention in patients lacking stability with highly constrained total knee arthroplasty. Despite improvements in design, nonmechanical and mechanical complications continue to be a problem. Dislocation of the hinge has been widely described, mainly due to the component fracture. Few reports describe isolated dislocation of the rotating stem. We...

INTRODUCTION Glenoid bone grafting is often used in cases of reverse shoulder arthroplasty (RSA) with glenoid deficiency. Additionally, bony increased-offset RSA (BIO-RSA) uses a cylindrical bonegraft harvested from the humeral head and is positioned beneath the glenoid baseplate to increase lateralization. Postoperative computed tomography (CT) has been used to detect glenoid bonegraft resorpt...

Unicompartmental knee arthroplasty (UKA) has increasingly become an attractive alternative to total knee arthroplasty for early intervention. Clinical and biomechanical studies have shown that UKA offers advantages in early recovery, more natural function, and patient satisfaction. The literature has also shown that UKA exhibits a higher rate of revision than total knee arthroplasty, particular...

background: the infection after total hip arthroplasty is one of the major and catastrophic complications and often cause multiple procedures, heavy cost and life threatens and disability for the patient. in this study, we report our experience about infected total hip arthroplasty. methods: in this study, among patients referred to kashani hospital in isfahan, iran from 2001 to 2007, 659 patie...

background:    previous studies suggest total hip arthroplasty may have some benefits compared to hemi-arthroplasty for displaced intracapsular femoral neck fractures in patients more than 60 years of age. the primary research question of our study was whether in-hospital adverse events, post-operative length of stay (los) and mortality in patients 60 year of age or older differed between total...

Varus and valgus joint laxity of the normal living knee in flexion was assessed using MRI. Twenty knees were flexed to 90 degrees and were imaged in neutral and under a varus-valgus stress in an open MRI system. The configuration of the tibiofemoral joint gap was studied in slices which crossed the epicondyles of the femur. When a varus stress was applied, the lateral joint gap opened by 6.7 +/...

PURPOSE OF THE STUDY The purpose of this study was to evaluate effectiveness of modified gap arthroplasty procedure and modified Myrhaug's preauricular incision for treating bony temporomandibular joint (TMJ) ankylosis. MATERIALS AND METHODS A total of 10 cases were included in the study with Sawhney's type III and IV TMJ ankylosis. Study consisted of 6 males and 4 females. Three cases were t...

We describe here various surgical options to obtain a correct rotational alignment of femoral component in total knee arthroplasty (TKA). The correct rotational alignment is the key point to obtain a rectangular balanced flexion gap as well to have a good patellar tracking. For that reason, rotation alignment largely affects postoperative kinematic results particularly during flexion.

BACKGROUND This study has been conducted with the aim of evaluating modified T-plate interpositional arthroplasty. METHODS A prospective comparative study in patients admitted with temporomandibular joint ankylosis. Ankylotic temporomandibular joint arthroplasty included condylectomy gap arthroplasty in 7, temporalis muscle flap interpositional arthroplasty in 8, and modified T-plate interpos...