The carpal tunnel syndrome instrument (CTSI) is a patient-oriented assessment of carpal tunnel syndrome and consists of a severity score (SS) and a functional status scale (FS). There have been no reports comparing the CTSI in dialysis cases and idiopathic cases using the same operative procedure. In the present study, we performed an endoscopic carpal tunnel release (ECTR) in hemodialysis patients and idiopathic patients and analyzed the CTSI from preoperatively to 1 year postoperatively. A total of 282 idiopathic cases and 168 dialysis cases answered the CTSI. There were no significant differences in age at the surgery or preoperative median nerve terminal latency between the two groups. Both CTSI-SS and CTSI-FS improved at 1 month and continued to improve up to 12 months in two groups. There was no significant difference in the two groups at any time. Both dialysis and idiopathic cases were expected to improve well on ECTR, and recovery was expected to continue for at least 12 months.

This study aimed to evaluate the characteristics of patients who had meniscus repair with early osteophyte formation. We retrospectively reviewed 56 knees from 56 patients (34 males and 22 females). We classified new osteophyte formation detected by Rosenberg view at postoperative 1 year for group O and without for group N. We analyzed the patient background, location of osteophyte, location of meniscus tear, meniscus tear pattern, suture technique, minimal joint space width, patient reported outcome measures. The number of group O was 21, osteophyte formation at the posterior notch of the femur was detected in 14 knees. Minimal joint space width from preoperative to postoperative 1 year narrowed significantly in group O. Patient reported outcome measures improved significantly at postoperative 1 year in both groups, but no significant difference was observed between the two groups. Our findings indicate that there are cases in which osteophyte formation is observed in the early postoperative term even after meniscal repair, it is necessary to pay attention to midlong term osteoarthritis progression.

Objective: Antibiotics with or without CT guided drainage is used for treatment of pyogenic iliopsoas abscess. We report six potentially life-threatening cases of pyogenic iliopsoas abscess that were difficult to treat conservatively. We treated these cases by surgical management.

Material and methods: We retrospectively analyzed six cases (two male and four female) with pyogenic iliopsoas abscess for which surgical drainage was performed. The average age was 58 (range: 31-78) years.

Result: Six patients underwent surgical psoas abscess drainage, five via lumbar lateral approach surgery and one via pelvic ilioinguinal approach surgery. On average duration of intravenous antibiotic administration after surgery was 27 (range: 13-48) days. Mean hospital stay after surgery was 59 (range: 48-70) days. Average duration of follow up after surgery was 430 (range: 61-1219) days. Infection was controlled in all the cases. Therefore, no case required additional surgical drainage.

Conclusion: Surgical drainage for pyogenic iliopsoas abscess was successful. Thus, surgical procedure may be considered in cases with uncontrolled infection.

The authors established the treatment strategies for massive tear of rotator cuff depending on the individual background and pathology such as an age, activity, degrees of pain, muscle strength, and range of motion. The outcomes of conservative treatment, in-operation, RSA, and the other surgery in 68 patients with massive rotator cuff tear were investigated, then the validity of our treatment strategies was evaluated. In all treatment groups except for inoperable group, JOA score at final follow-ups were significantly improved. Appropriate treatment including conservative treatment should be selected for the patients depending on their own pathology.

Background: Pin site infection originating from the skin around the pin is a serious problem when using circular external fixation. Its high rate of occurrence and risk of serious complications highlight the urgency to prevent and control this sequela. The aim of this study was to investigate the factors associated with the occurrence of pin site infection. Methods: A retrospective study was conducted at the author's institution from April 2016 to April 2022. We selected patients who had undergone osteosynthesis or reconstructive surgery. Ultimately, 30 cases were included. Using the Checketts-Otterburn classification to evaluate pin site infection, we defined Grade 1 or above as infected cases and Grade 3 or above as severe cases. We performed statistical analysis of these cases based on patient background and surgical procedure. Results: Severe pin site infection was more frequent in cases of degenerative diseases than in those of traumatic diseases. Regarding surgical procedure, there was a significant difference in severity rates of pin site infection between osteosynthesis and arthrodesis. Conclusions: Severe pin site infection may be more frequent in cases of degenerative diseases than in those of traumatic diseases. Furthermore, particular attention must be paid to patients after arthrodesis.