Journal of Hip Preservation Surgery最新文献

Recurrent groin pain following periacetabular osteotomy (PAO) is a challenging problem. The purpose of our study was to evaluate the position and dynamics of the psoas tendon as a potential cause for recurrent groin pain following PAO. A total of 386 PAO procedures, performed between January 2013 and January 2020, were identified from a single surgeon series. Thirteen patients (18 hips) had a psoas tendinopathy, as confirmed with relief of symptoms following a diagnostic injection into the psoas tendon. All patients underwent computed tomography (CT) scans pre- and post-operatively. The data from CT scan was used to manually segment bony structures and create 3D models using Mimics software (Materialise NV). A validated discrete element analysis model using rigid body springs was used to predict psoas tendon movement during hip circumduction and walking. The distance of the iliopsoas tendon to any bony abnormality was calculated. All computational analyses were performed using MATLAB software. Thirteen hips (13/18) showed bony malformations (spurs, hypertrophic callus or delayed union and malunion) secondary to callus at the superior pubic ramus. The mean minimal distance of the iliopsoas tendon to osteotomy site was found to be 13.73 mm (σ = 3.09) for spurs, 10.99 mm (σ = 2.85) for hypertrophic callus and 11.91 mm (σ = 2.55) for canyon type. In normal bony healing, the mean minimal distance was 18.55 mm (σ = 4.11). Using a validated computational modelling technique, this study has demonstrated three different types of malformation around the superior pubic osteotomy site, which are associated with psoas impingement. In all of the cases, the minimal distance of the iliopsoas tendon to the osteotomy site was reduced by 59-74%, as compared with the normal anatomy.

[This corrects the article DOI: 10.1093/jhps/hnae009.].

This study aimed to evaluate the feasibility of using ultrasound for monitoring osteochondroplasty intraoperatively, determine the factors that interfere with ultrasound imaging and assess its influence on surgeon performance. Intraoperative ultrasonography was performed during osteochondroplasty in 39 cases of arthroscopy. The femoral head-neck junction (FHNJ) was evaluated using ultrasonography. Another 39 cases, which underwent conventional arthroscopy, were included in the control group. The C-arm was used in this group at the end of osteochondroplasty to confirm that no residual cam lesion remained. Pre- and postoperative Dunn radiographs and computed tomography (CT) scans were analyzed to determine the feasibility of ultrasound. Residual cam deformity was noted in eight cases under ultrasound. The FHNJ was not detected owing to ultrasound interference by air in three cases. No difference in the α angle measured in Dunn radiographs and the residual cam deformity rate of CT at the 1:00, 2:00 or 3:00 position was found between both groups. However, the α angle at the 3:00 position was greater in the ultrasound group than in the control group (44.4 ± 4.3° versus 41.3 ± 5.1°, P < 0.05), suggesting that more bone was preserved at 3:00 in the ultrasound group. No difference was found in the mean operation time. None of the patients experienced complications, such as wounds or intra-articular infections. Ultrasound is a safe method for assessing FHNJ during arthroscopy. It did not change the risk of residual cam deformity but positively affected the surgeon's performance by reducing unnecessary bone removal.

Periacetabular osteotomy (PAO) is the treatment of choice in dysplastic acetabulum. Due to continued symptoms, 2-11% of these patients require an additional hip arthroscopy. The purpose of this study was to report clinical outcome after a minimum of 2-year follow-up of additional hip arthroscopy after PAO with data from Danish Hip Arthroscopy Registry. Inclusion criteria in the study cohort were PAO surgery resulting in an additional hip arthroscopy procedure. The cohort was evaluated according to the surgical findings and patient-related outcome measures (PROMs) pre-operatively and at 2-year follow-up. A total of 287 patients were included in the study cohort. PROMs improved significantly in all subscales from pre-operatively to 2-year follow-up in the study cohort. According to PROM subscales, 47.8-57.6% and 25.2-38.2% achieved Minimal Clinical Important Difference and Patient Acceptable Symptom State, respectively. This study demonstrates, in PAO-treated patients, significant PROM improvements after additional hip arthroscopy. Unfortunately, only ∼50% and 30% achieved Minimal Clinical Important Difference and Patient Acceptable Symptom State, respectively.