Background: Giant cell tumor of the tendon sheath (GCTTS) is the most common benign tumor of the hand following the ganglion cyst. It is more prevalent in women in third through fifth decades of life. Objectives: The aim of the study was to investigate the demographic and clinical characteristics as well as the rate of recurrence of GCTTS in an Iranian population. Patients and Methods: Medical records of 47 patients with GCTTS were reviewed. Data on demographic characteristics as well as clinical and intraoperative findings were collected. Plain X-rays, magnetic resonance, and ultrasonographic images were observed. Patients were asked about the recurrence of the GCTTS after mean interval of 4.9 ± 2.6 years. Results: Females were predominantly involved (70.2%). Patients aged 38.5 ± 16.2 years at the time of surgery. The middle finger was the most common site of the lesion (27.6%) followed by index finger (25.5%) and thumb (21.3%). The volume of the lesions averaged 3.9 ± 5.5 cm 3 . The GCTTS had invaded the skin (1 patient), bone (1 patient), tendon pulley (6 patients), tendon (4 patients), and digital nerve (2 patients). Osseous erosion was found in two patients. After exact excision, the tumor recurred in four patients (8.5%). None of the variables affected the risk of recurrence. Conclusions:The characteristics of our patients were greatly similar to the previous studies. Exact and complete excision of the lesion under magnification was the keystone of decreased rate of GCTTS recurrence.

Background: High-pressure injections into the hand, burden devastating and permanent functional impairments. Many materials including paint, paint thinner, gasoline, oil and grease are reported as the causative agents. These injuries need multiple procedures and reconstructions most of the time and 40% of the injuries may end with amputation of the injured part. Objectives: The aim of this study was to report the treatment outcomes and methods of treatments of patients with high-pressure injection injuries of the hand. Methods: We retrospectively reviewed the medical records, imaging files and demographic data of patients, who were treated at our center due to the high-pressure injuries to their hands. We recorded the kind of the injected materials, time to the first treatment procedure, times of operation, and methods of their treatments. The outcomes of the injuries as well as the deficiency of the digital joints motion were also reported. Results: Nine cases with high-pressure injury of the hand were enrolled in this study. All patients were male with mean age of 26.88

Background: Giant cell tumor of the tendon sheath (GCTTS) is the most common benign tumor of the hand following the ganglion cyst. It is more prevalent in women in third through fifth decades of life. Objectives: The aim of the study was to investigate the demographic and clinical characteristics as well as the rate of recurrence of GCTTS in an Iranian population. Patients and Methods: Medical records of 47 patients with GCTTS were reviewed. Data on demographic characteristics as well as clinical and intraoperative findings were collected. Plain X-rays, magnetic resonance, and ultrasonographic images were observed. Patients were asked about the recurrence of the GCTTS after mean interval of 4.9 ± 2.6 years. Results: Females were predominantly involved (70.2%). Patients aged 38.5 ± 16.2 years at the time of surgery. The middle finger was the most common site of the lesion (27.6%) followed by index finger (25.5%) and thumb (21.3%). The volume of the lesions averaged 3.9 ± 5.5 cm 3. The GCTTS had invaded the skin (1 patient), bone (1 patient), tendon pulley (6 patients), tendon (4 patients), and digital nerve (2 patients). Osseous erosion was found in two patients. After exact excision, the tumor recurred in four patients (8.5%). None of the variables affected the risk of recurrence. Conclusions: The characteristics of our patients were greatly similar to the previous studies. Exact and complete excision of the lesion under magnification was the keystone of decreased rate of GCTTS recurrence.

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Background: The Kienböck's disease (KD), even today, has many obscurities. Its etiologies as well as classifications are under constant change and debate, therefore we decided to define the effect of proximal lunate morphology on KD and its usefulness in evaluating the course of the disease.