Long-Term Outcomes Following Manipulation Under Anaesthetic for Patients with Primary and Secondary Frozen ShoulderShoulder

Background Frozen Shoulder (FS) is a common, debilitating condition for which manipulation under anaesthetic (MUA) is a non-invasive and effective treatment option. Current literature evaluates short to medium-term outcomes, but there is a paucity of long-term (>10 years) studies. Knowledge of long-term outcomes is also needed to evaluate whether FS or its treatment pre-disposes to other shoulder pathology in the long-term. Methods A retrospective analysis of 398 shoulders undergoing MUA for FS between Jan 1999 and Jan 2010; 240 complete datasets were obtained. Outcomes were Oxford Shoulder Score (OSS), recurrence and development of other shoulder pathology (arthritis or rotator cuff tear). Results At long-term follow-up (mean 13.2 years), 71.3% had no symptoms (OSS 48), 16.6% had minor symptoms (OSS 42–47) and 12.1% had significant symptoms (OSS < 42). There were 4/240 (1.7%) self-reported recurrences > 5 years after initial MUA and 2/240 (0.8%) repeat MUAs. In the long-term 6.7% developed rotator cuff pathology and 3.8% shoulder OA. Discussion This study suggests that long-term outcome after MUA for FS is favourable. Late recurrence of FS is uncommon and the development of OA or rotator cuff pathology is no greater than that of the general population.

Agreement between the American Shoulder and Elbow Surgeons Society Standardized Shoulder Assessment score (ASES) and the Oxford Shoulder Score (OSS) in patients presenting with shoulder pathology: A cohort analysis of the Clinical Quality Registry for Outcomes in Shoulder and Elbow Pathology (CROSEP) registry

Background The choice of patient-reported outcome measure (PROM) used in shoulder studies varies based on clinician's preference and location. This creates difficulties when attempting to compare studies which have used different PROMs as their outcome measure. This study aims to assess the agreement between the American Shoulder and Elbow Surgeons score (ASES) and the Oxford Shoulder Score (OSS), and identify factors associated with agreement. Methods Patients with shoulder pathology were identified from a multi-cohort observational practice registry. 1050 paired ASES and OSS pre-treatment scores were prospectively collected. Linear regression was performed to assess the agreement between the PROMs. Mixed-effects analysis of variance was performed to assess the influence of factors associated with agreement. Results Regression for mean total and mean function ASES and OSS demonstrated good fit (adjusted R2 57.7%, P < 0.001; and 63.9%, P < 0.001). Mean pain subscore demonstrated a poorer fit (adjusted R2 39.4%, P < 0.001). Crosswalks to convert between mean scores were produced with reasonable precision. Veterans RAND 12-Item Health Survey score, age and diagnosis cohort influenced agreement. Conclusion Mean total and mean function ASES and OSS scores agree well with each other. This allows for a more informed comparison of studies using either PROMs as their outcome measure.

474 Effectiveness of Platelet Rich Plasma in the Treatment of Recalcitrant Shoulder Pathology

Aim To assess the outcome of platelet rich plasma injections (PRP) in patients with recalcitrant shoulder pathology using steroid injections as a control. Method This was a pragmatic retrospective analysis of patients treated for recalcitrant shoulder pathology between October 2018 to March 2019 with either PRP or steroid injection. Results In the PRP group 10 patients (n = 15) had previous steroid injections and 7 had previous surgery. 2 progressed to shoulder replacement. 5 have progressed to arthropathy. 4 patients were discharged due to improving symptoms. In the steroid group 2 patients (n = 15) were lost to follow up, 0 had previous surgery and 1 had a previous steroid injection. 6 were discharged due to improving symptoms. The average time to discharge post procedure was 241 days for PRP and 173 days for the steroid group. No complications were noted in either group. Conclusions Our findings show that PRP injections are a safe and effective treatment for cases of recalcitrant shoulder pathology leading to a 27% success rate for patients who have required steroid injections or arthroscopy in the past. In patients with arthropathy, PRP only has a short effect and should only be offered to patients that are unable to have surgery either due to high risk or patient choice. PRP requires a centrifuge machine and an operating theatre, thus incurring higher costs compared to steroid injections which may be given in clinic. Steroid injections should therefore remain the first line of treatment for recalcitrant shoulder pathology.

A Study of Association Between Acromion Types and Shoulder Pathology

Background and aim: Shoulder impingement and rotator cuff tear are commonly seen shoulder pathology. Pathological changes in soft tissue around shoulder can be due to intrinsic degenerative in tendons or extrinsic mechanical compression due to Acromion types. Arthroscopic acromioplasty is still standard procedure done for shoulder impingement pathology and during rotator cuff repair. Our primary objective was to determine acromion types, its prevalence rate with shoulder pathology.Methods: Total 85 patients who met inclusion criteria were included in the study. Acromion types were classified according to Bigliani et al type I acromion has flat undersurface, type II acromion has curved undersurface, type III acromion has hooked undersurface on Supraspinatous outlet view radiographs. Types of Acromion were co-related with shoulder pathology and age group.Results: Out of 85 patients with shoulder pathology 43 patients had impingement shoulder syndrome and 42 patients had rotator cuff tear. Mean age group for impingement shoulder syndrome group was 39.6 years and for rotator cuff tear group was 58.6 years. Overall right shoulder is affected more compared to left shoulder. Type 2 acromion was seen in 64.7% study population and type 1 is seen in 23.5% and type 3 is seen in 11.8%.Conclusions: In our study type 2 acromion is more frequently seen in shoulder pathology involving rotator cuff tear and impingement syndrome. Acromion morphology does not vary with age.

The Relationship between Clinical Tests, Ultrasound Findings and Selected Field-Based Wheelchair Skills Tests in a Cohort of Quadriplegic Wheelchair Rugby Athletes: A Pilot Study

Manual wheelchair use may determine shoulder joint overload and rotator cuff injury. Chronic shoulder pathologies can also influence the propulsion ability of wheelchair athletes with spinal cord injury (SCI) during sport activities. However, the relationship between shoulder pathology and wheelchair performances has never been explored. Therefore, the study aimed to investigate the correlation between shoulder pathologic findings with clinical tests and ultrasonography evaluation and the results of wheelchair performance tests. Nineteen quadriplegic wheelchair rugby players were evaluated to investigate the association between clinical and ultrasound shoulder pathologic findings and their correlation with the performance of field-based selected wheelchair skills tests (WSTs). The outcome measures were the International Wheelchair Rugby Classification Score, dominant and non-dominant Physical Examination Shoulder Score, and dominant and non-dominant Ultrasound Shoulder Pathology Rating Scale (USPRS). The WST was measured at the beginning and at one-year follow-up. A statistically significant correlation was found between the time since SCI and dominant USPRS (p < 0.005). The non-dominant USPRS was strongly related to WST at the beginning (p < 0.005) and the end of the study (p < 0.05). Data suggest that the severity of the non-dominant shoulder pathology detected on the ultrasound is related to lower performance on the WST. Chronic manual wheelchair use could be responsible for dominant SCI shoulder joint and rotator cuff muscle damage, while non-dominant USPRS could be related to performance on the WST.