Arthroscopic release for chronic, refractory adhesive capsulitis of the shoulder

Ultrasound-Guided Glenohumeral Corticosteroid Injection for the Treatment of Adhesive Capsulitis of the Shoulder: The Role of Clinical Stage in Response to Treatment

BACKGROUND

Treatment for idiopathic adhesive capsulitis of the shoulder remains controversial. Stages 1 to 2 reflect an inflammatory process supporting a rationale for intra-articular glenohumeral joint corticosteroid injection to treat synovial inflammation and prevent progression to capsular fibrosis.

HYPOTHESIS

We hypothesize that an intra-articular ultrasound-guided glenohumeral injection (USGI) of corticosteroid in patients diagnosed with Stage 1 or 2 idiopathic adhesive capsulitis will result in timely functional recovery and resolution of pain and stiffness.

STUDY DESIGN

Case series.

LEVEL OF EVIDENCE

Level 4.

METHODS

Patients with Stage 1 or 2 idiopathic adhesive capsulitis treated with an intra-articular corticosteroid injection were included. Patients were seen by a single physician and diagnosed using history and physical examination with careful attention to measurement of glenohumeral range of motion (ROM). A total of 61 patients met inclusion criteria. ROM measurements documented in the patient charts were recorded in forward flexion, abduction, internal rotation, and external rotation in neutral abduction. All ROM measurements were performed pre- and postinjection. All patients were treated with an USGI of local anesthetic and depomedrol. Recovery criteria were defined as forward flexion, abduction, and external rotation within 15° of the contralateral side and internal rotation within 3 spinous process levels of the contralateral side.

RESULTS

A total of 11 patients with Stage 1 and 50 patients with Stage 2 adhesive capsulitis comprised the final study cohort. Within the Stage 1 cohort, all 11 patients met recovery criteria for forward flexion and internal rotation (100%), 10 met recovery criteria for abduction (91%), and 8 met recovery criteria for external rotation (73%). Within the Stage 2 cohort, 31 patients met recovery criteria for forward flexion (62%), 30 met recovery criteria for abduction (60%), 36 met recovery criteria for internal rotation (72%), and 25 met recovery criteria for external rotation (50%). The difference in time to recovery in days was statistically significant in all ROM planes and was within 2 to 6 weeks for patients in Stage 1 and 7 to 10 weeks for Stage 2.

CONCLUSION

USGI for early adhesive capsulitis allows patients to recover ROM more rapidly if performed early after onset of pain and stiffness.

CLINICAL RELEVANCE

These results stress the importance of recognition of idiopathic adhesive capsulitis in its early stages and subsequent intervention with an intra-articular glenohumeral corticosteroid injection.

Comparing surgical outcomes of anterior capsular release vs circumferential release for persistent capsular stiffness

Purpose

To consolidate the existing literature evaluating anterior capsular release and circumferential capsular release in the treatment of adhesive capsulitis (AC) of the shoulder.

Methods

The electronic databases PUBMED, EMBASE, MEDLINE and CENTRAL (Cochrane Central Register of Controlled Trials) were searched from data inception to October 8, 2020. Data are presented descriptively where appropriate. A meta-analysis was conducted for patient-reported outcomes.

Results

Overall, there were forty-six articles included. The majority of patients underwent circumferential release compared to anterior release (80.1% vs. 19.9%). Concomitant Manipulation Under Anesthesia (MUA) was employed in 25 studies, with a higher occurrence in the anterior compared to the circumferential release group (70% vs 60%). Both groups experienced significant improvements postoperatively in range of motion (ROM) and patient-reported outcomes. Complication rates were low for both anterior release (0.67%) and 360° release (0.44%).

Conclusion

Both anterior and circumferential release are effective techniques for treating AC with low complication rates. Future studies should improve documentation of patient demographics, surgical techniques and outcomes to determine an individualized treatment protocol for patients.

Level of evidence

Level IV, Systematic Review of Level I-IV studies.

Frozen shoulder

Frozen shoulder is a common debilitating disorder characterized by shoulder pain and progressive loss of shoulder movement. Frozen shoulder is frequently associated with other systemic conditions or occurs following periods of immobilization, and has a protracted clinical course, which can be frustrating for patients as well as health-care professionals. Frozen shoulder is characterized by fibroproliferative tissue fibrosis, whereby fibroblasts, producing predominantly type I and type III collagen, transform into myofibroblasts (a smooth muscle phenotype), which is accompanied by inflammation, neoangiogenesis and neoinnervation, resulting in shoulder capsular fibrotic contractures and the associated clinical stiffness. Diagnosis is heavily based on physical examination and can be difficult depending on the stage of disease or if concomitant shoulder pathology is present. Management consists of physiotherapy, therapeutic modalities such as steroid injections, anti-inflammatory medications, hydrodilation and surgical interventions; however, their effectiveness remains unclear. Facilitating translational science should aid in development of novel therapies to improve outcomes among individuals with this debilitating condition.

Comparison of Gene Expression of Inflammation- and Fibrosis-Related Factors Between the Anterior and Posterior Capsule in Patients With Rotator Cuff Tear and Shoulder Stiffness

Background

Arthroscopic capsular release is an effective treatment for refractory shoulder stiffness, yet there are no basic studies that can explain the extent of the release.

Purpose

This study aimed to compare the genetic expression of inflammation- and fibrosis-related factors between the anterior and posterior capsules in patients with shoulder stiffness and rotator cuff tear.

Study Design

Descriptive laboratory study.

Methods

Enrolled in this study were 35 patients who underwent arthroscopic capsular release for shoulder stiffness along with the rotator cuff repair. Anterior and posterior glenohumeral joint capsular tissues were obtained during the capsular release. For the control tissue, anterior capsule was obtained from 40 patients without stiffness who underwent arthroscopic rotator cuff repair. The gene expression of collagen types I and III, fibronectin, extracellular matrix, basic fibroblast growth factor, transforming growth factor-β, connective tissue growth factor, matrix metalloproteinase (MMP)-1, MMP-2, MMP-9, tissue inhibitor of metalloproteinase (TIMP)-1, TIMP-2, intercellular adhesion molecule 1, interleukin 1, and tumor necrotizing factor-α were analyzed using real-time reverse transcription polymerase chain reaction. Differences in gene expression between the anterior capsule, the posterior capsule, and the control tissue were compared with the Kruskal-Wallis test.

Results

The expression levels of collagen types I and III were significantly higher in the anterior capsule with stiffness com (pared with both the posterior capsule with stiffness (P = .010 for both) and the control (P = .038 and .010, respectively). The levels of fibronectin, MMP-2, and MMP-9 in the anterior capsule were significantly higher than in both the posterior capsule (P = .013, .003, and .006, respectively) and the control (P = .014, .003, and .005, respectively).

Conclusion

Genetic analysis of the shoulder capsule revealed that more fibrogenic processes occur in the anterior capsule compared with the posterior capsule in patients with shoulder stiffness.

Clinical Relevance

Capsular release for shoulder stiffness should be more focused on the anterior capsule than on the posterior capsule.

[Effectiveness of arthroscopic 360° capsular release for frozen shoulder]

Objective

To investigate the effectiveness of arthroscopic 360° capsular release for frozen shoulder.

Methods

Between April 2018 and April 2019, 42 patients with frozen shoulders were treated with arthroscopic 360° capsular release. There were 13 males and 29 females, with an average age of 52.3 years (range, 45-56 years). There were 14 left shoulders and 28 right shoulders. The disease duration ranged from 5 to 18 months (mean, 11.1 months). The main clinical symptoms were limited active and passive movement of the shoulder joint with severe pain. All patients excluded impingement syndrome and shoulder osteoarthritis. Preoperative range of motion was as follows: forward flexion (93.2±15.4)°, external rotation at side (15.9±6.0)°, external rotation at 90° abduction (18.4±9.9)°, and internal rotation reaching the greater trochanter in 5 cases, buttocks in 20 cases, S ₁ level in 17 cases. The visual analogue scale (VAS) score was 6.7±1.7 and the American Society of Shoulder and Elbow Surgery (ASES) score was 41.6±9.3. The active range of motion of shoulder joint, VAS score, and ASES score were recorded during follow-up.

Results

All incisions healed by first intention, and no early complications occurred. Patients were followed up 12-24 months (mean, 15.6 months). After operation, forward flexion, external rotation at side, and external rotation at 90° abduction significantly improved when compared with preoperatively ( P<0.05). The range of internal rotation restored to the level of T _6-12 at 3 weeks, which was equivalent to that of the normal side at 12 months after operation ( Z=-0.943, P=0.346). VAS scores decreased and ASES scores increased after operation, and the differences between pre- and post-operation were significant ( P<0.05); and with time, the VAS scores and ASES scores improved further ( P<0.05).

Conclusion

Arthroscopic 360° capsular release can significantly increase the range of motion of the shoulder joint, release pain, and improve function. It is an effective method for the treatment of frozen shoulders.

Effectiveness of arthroscopic management of idiopathic shoulder stiffness: A meta-analysis

BACKGROUND

Persisting shoulder stiffness adversely affects quality of life by causing pain and motion restrictions especially in patients with diabetes.

OBJECTIVE

The aim of this study was to evaluate the outcomes of arthroscopic capsular release in patients with idiopathic shoulder stiffness.

METHOD

A literature search was conducted in electronic databases and studies were selected by following precise eligibility criteria. Random-effects meta-analyses were performed to estimate the changes at latest follow-up in scores of the Constant, American Shoulder and Elbow Surgeons (ASES), and University of California at Los Angelis (UCLA) scales, Visual Analogue Scale (VAS), and shoulder range of motion.

RESULTS

Nineteen studies were included. The follow-up duration was 42 months [95% confidence interval (CI): 32, 51]. Improvements in scores of the Constant, ASES, UCLA scales, and VAS were 48.3 [95% CI: 38.0, 58.6], 44.6 [95% CI: 24.6, 64.6], 19.3 [95% CI: 16.6, 22.0], and -6.1 [95% CI: -6.9, -5.4] respectively (P< 0.05 all). Improvements in the shoulder range of motion were: abduction 82.0 [95% CI: 65.0, 98.9]; forward flexion 75.9 [95% CI: 59.7, 92.1]; external rotation 43.2 [95% CI: 37.5, 49.0]; and internal rotation 25.4 [95% CI: 15.2, 35.5] degrees; P< 0.05 all).

CONCLUSION

Arthroscopic capsular release effectively improves shoulder function in patients with idiopathic shoulder stiffness.

Diabetes: a silent player in musculoskeletal interventional radiology response

Diabetes has an important role in the development of several musculoskeletal disorders, such as adhesive capsulitis of the shoulder (ACs) and stenosing flexor tenosynovitis of the finger (SfTf). The etiopathophysiology of ACs and SfTf in diabetic patients is associated with both chronic hyperglycemia, increased amounts of visceral adiposity and chronic inflammation. Chronic hyperglycemia stimulates the creation of cross-links between collagen molecules, impairing degradation and resulting in the build-up of excessive collagen deposits in the cartilage, ligaments, tendon sheaths and tendons. Increased adipocytes in diabetic patients secrete proteins and cytocines such as TNF-α, IL-6 and IL-13 which result in overproduction of pro-inflammatory factors, destruction of normal tissue architecture and fibrosis. Both hyperglycemia and adipocytes inhibit efferocytosis, limiting natural resolution. Recently, multiple image-guided interventional radiology musculoskeletal treatment options have been developed, such as ultrasound-guided glenohumeral capsule hydrodistension for ACs and ultrasound-guided percutaneous pulley release for trigger finger. Diabetes can negatively influence outcomes in patients with ACs and SfTf and may impact the decision of which specific procedure technique should be employed. Further studies are necessary to define how diabetes influences response to interventional radiology treatments of these disorders, as well as the extent to which control of blood sugar levels can contribute towards the personalization and optimization of patient follow up.

Arthroscopic capsular release to treat idiopathic frozen shoulder: How much release is needed?

PURPOSE

This systematic review and meta-analysis aims to provide consensus regarding the degree of optimal extended arthroscopic capsular release in addition to a standard rotator interval release in the treatment of idiopathic frozen shoulder.

MATERIALS AND METHODS

The systematic review was conducted using the Preferred Reporting Items for Systemic Reviews and Meta-Analyses (PRISMA) guidelines. All articles that reported the outcomes of capsular release in idiopathic frozen shoulder were included. A total of 18 articles with 629 patients and 811 shoulders were included. Clinical outcomes analysed include differences between pre and postoperative ranges of motion (ROM), Visual Analog Score (VAS) reduction, Simple Shoulder Test (SST) scores and Constant scores. Patients were grouped by technique: anterior-inferior capsular release (Group 1), anterior-inferior-posterior capsular release (Group 2), and 360-degree capsular release (Group 3) at follow up points 3,6 and 12 months.

RESULTS

Comparing ROM, Group 1 had greater early abduction (p<0.01), early (p<0.01) and overall external rotation (p<0.01) than Group 2, as well as greater early flexion (p<0.01), early abduction (p<0.01), early (p<0.01) and overall internal rotation (p<0.01) than Group 3. Group 2 had greater early (p=0.03) and overall flexion (p<0.01) than Group 1, as well as greater early (p<0.01) and overall flexion (p<0.01), early abduction (p<0.01) and early internal rotation (p<0.01) than Group 3. Group 3 had greater overall flexion (p<0.01) than Group 1 and greater overall external rotation (p<0.01) than Group 2. Comparing VAS scores, the less extensive releases saw the greatest significant postoperative reduction. Group 2 had greater mean improvements in postoperative Constant scores than Group 1 (p<0.01) and Group 3 (p<0.01), while SST scores were significantly higher in Group 1 (p<0.01).

CONCLUSION

This systematic review and meta-analysis suggests that less extensive releases may result in better functional and pain scores. Addition of a posterior release offers increased early internal rotation, which was not sustained over time, but provides early and sustained flexion improvements. A complete 360 release may not provide any further benefit. There were no significant differences in the complication rates amongst the 3 techniques.

LEVEL OF STUDY

II; Meta-analysis and systematic review.

Results of repeat manipulation under ultrasound-guided cervical nerve root block with corticosteroid and local anaesthetic injection for recurrence of frozen shoulder

BACKGROUND

This study aimed to evaluate the clinical results of a repeat manipulation under ultrasound-guided cervical nerve root block (MUC) with corticosteroid and local anaesthetic injection for recurrence of idiopathic frozen shoulder after MUC.

METHODS

A consecutive series of 42 shoulders in 39 patients with idiopathic frozen shoulder underwent MUC. All patients were assessed according to the American Shoulder Elbow Surgeon (ASES) score and shoulder range of motion (ROM) both before MUC and at 1 year thereafter. If patients continued to have pain and limited ROM at 3 months after the procedure, they were offered a repeat MUC. Such patients were also assessed before the procedure and at 3 months and 1 year thereafter.

RESULTS

The initial MUC was successful in 31 shoulders (single group). Repeat MUC was required in 11 shoulders (repeat group). Patients in the single group showed significant improvement in ROM and ASES score at 1 year after the procedure (p < 0.001); similarly, patients in the repeat group had significant improvement in ROM and ASES score at 3 months and 1 year after the procedure (p < 0.001). Patients in the repeat group had had significantly more severely limited ROM (p < 0.01) and decreased ASES score (p < 0.001) before the procedure compared with those in the single group.

CONCLUSIONS

A repeat MUC with corticosteroid and local anaesthetic injection is a valuable option before proceeding to surgery for recurrence of idiopathic frozen shoulder. When there is severely limited ROM and decreased ASES score before the MUC, a repeat MUC may be necessary, which would require the patient's informed consent.

TRIAL REGISTRATION

Retrospectively registered.

Selective Glenohumeral external rotation deficit - sequelae of post-ORIF deltoid adhesions after treatment of the proximal humerus fracture

Background

The deltopectoral approach is commonly used for plate stabilization of proximal humerus fracture. Although adhesions between the deltoid, plate, and humerus are common sequelae of plate ORIF, little is known about their effect on the range of movement and a function of the shoulder. To confirm their impact, the preoperative and intraoperative evaluation of the range of motion (ROM) was measured during the sequential arthroscopic release of adhesions, with special regard to external rotation. Postoperative ROM and subjective shoulder function were also evaluated.

Methods

Eighteen patients treated with ORIF of the proximal humerus were scheduled to the unified arthroscopic procedures comprising sequential limited subacromial bursectomy, removal of the adhesions between the deltoid, plate, and humerus, as well as the plate removal. The ROM of the operated and opposite shoulders were assessed before surgery, intraoperatively and after a minimum two-year follow-up, with special regard to external rotation in adduction (AddER) and abduction (AbdER). Besides, the Constant-Murley score and Subjective Shoulder Value (SSV) were evaluated before a plate removal and after a minimum two-year follow-up after the surgery.

Results

Deltoid adhesion release correlated with considerable and statistically significant improvement of AddER (p < 0.0002) but not with the intraoperative range of AbdER. Significant improvement of AddER, but also of AbdER and other range of motion was noted at the follow-up. The improvement of the affected shoulder function following arthroscopic plate removal was considerable and statistically significant according to the modified Constant-Murley score (p < 0,01) and SSV (p < 0.0000) after a minimum of two-year follow-up.

Conclusions

Our findings are the first to highlight the influence of deltoid muscle, plate, and humerus adhesions on limiting external rotation in adduction after ORIF treatment of proximal humerus fractures. These observations allow the identification of a new shoulder evaluation symptom: Selective Glenohumeral External Rotation Deficit (SGERD) as well as functional deltohumeral space.

Arthroscopic capsular release and continuous upper arm brachial block in frozen shoulder - A midterm outcome analysis

OBJECTIVE

This prospective study aims to evaluate the efficacy of Continuous upper arm brachial block (modified interscalene block) with an arthroscopic capsular release in the outcome of resistant frozen shoulder cases.

METHODS

We studied 123 patients who underwent arthroscopic capsular release and subacromial decompression for resistant frozen shoulder cases between June 2016 and July 2019. Postoperative analgesia was provided with Continuous upper arm brachial block and ambulatory patient-controlled analgesia pump for 2-3 weeks. The patients were started on regular physiotherapy on the first postoperative day. All the patients were followed up at 3rd week, 6th week, 3rdmonth, 6th month, 1st year, and 2nd year with VAS and Constant-Murley scores.

RESULTS

At a mean follow-up period of 18 months, there was a statistically significant improvement in the range of motion, VAS scores, and Constant-Murley scores postoperatively (p < .01). None of the cases required postoperative opioid administration for pain control. Minor neurological complications like recurrent laryngeal nerve palsy and Horner's syndrome were seen in few cases that resolved with titration of the drug dose.

CONCLUSION

Our study verifies the use of continuous upper arm brachial block (CUABB) with a portable infusion pump for 2-3 weeks in arthroscopic capsular release for resistant frozen shoulder cases. It significantly reduced postoperative pain in the initial two weeks that aided with early recovery of the shoulder movements and functions without an increased incidence of acute or chronic neurologic complications.

Capsular release following total shoulder arthroplasty: an analysis of early outcomes

BACKGROUND

The purpose of this study is to analyze the outcomes of open and arthroscopic capsular release following total shoulder arthroplasty.

METHODS

Over 15 years, 19 patients experienced persistent shoulder stiffness after anatomic total shoulder arthroplasty refractory to nonoperative treatment, requiring either open (n = 5) or arthroscopic (n = 14) capsular release. There were seven (39%) patients who had a prior diagnosis of stiffness before the primary arthroplasty.

RESULTS

At a follow-up of 2.3 years (1-5.5), there were changes in range of motion, including forward flexion (77°-117°), abduction (49°-98°), external rotation (9°-19°), internal rotation at 0° (Sacrum to L1), and pain (4.1-2.3) scores (p < 0.01). There were seven (37%) patients that required a reoperation following the initial capsular release. The survival-free of reoperation at 2 and 5 years was 76% and 53%, respectively, while the survival-free of revision surgery at 2 and 5 years was 83%. Furthermore, three (16%) patients required a repeat capsular release. Overall, there were 11 (58%) complications, including stiffness (n = 9), infection (n = 1), subscapularis rupture (n = 2), glenoid loosening (n = 3), and pain with weakness requiring reoperation (n = 1).

CONCLUSIONS

Shoulder stiffness after total shoulder arthroplasty is a very difficult pathology to treat, with high rates of complications and reoperations after capsular release. Overall, in patients that do not develop glenoid loosening, capsular release does improve the patient's pain and shoulder motion. Furthermore, when patients develop stiffness, it is critical to rule out other etiologies, such as glenoid loosening, prior to proceeding with capsular release.

LEVEL OF EVIDENCE IV

Retrospective case series.

[Mid-term effectiveness of manipulation under anesthesia combined with arthroscopic capsular release and subacromial debridement for primary frozen shoulder]

OBJECTIVE

To evaluate mid-term effectiveness of manipulation under anesthesia combined with arthroscopic capsular release and subacromial debridement for primary frozen shoulder.

METHODS

Between January 2013 and December 2017, 33 patients of primary frozen shoulder were treated with manipulation under anesthesia combined with 360° arthroscopic capsular release and subacromial debridement. There were 10 males and 23 females, aged from 37 to 65 years, with a mean age of 50.9 years. The affected shoulder on left side in 17 cases and on right side in 16 cases. The disease duration was 6-13 months (mean, 8.4 months). Before and after operation, the visual analogue scale (VAS) score was used to evaluate the shoulder joint pain, Constant score was used to evaluate the shoulder joint function, and the flexion, abduction, and external rotation of shoulder joint were recorded. The internal rotation function was assessed based on the vertebral plane that the thumb could reach after internal rotation of the affected shoulder joint (the rank of internal rotation vertebra). X-ray film was taken to measure the distance of the subacromial space.

RESULTS

There was no fracture or labrum tear in all patients, and all the incisions healed by first intention. All the 33 patients were followed up 20-31 months, with an average of 24.1 months. During the follow-up, there was no complication such as wound infection and nerve injury. At last follow-up, the range of motion of shoulder flexion, abduction, and external rotation, the rank of internal rotation vertebra, the VAS score, Constant score, and subacromial space were significantly improved when compared with preoperative ones ( P<0.05).

CONCLUSION

Manipulation under anesthesia combined with arthroscopic capsular release and subacromial debridement can achieve a good mid-term effectiveness without complication for primary frozen shoulder.

Outcomes of Arthroscopic Capsular Release in the Beach-Chair Versus Lateral Decubitus Position: A Systematic Review

Background:

Arthroscopic capsular release (ACR) for the treatment of adhesive capsulitis of the shoulder can be performed in either the beach-chair (BC) or lateral decubitus (LD) position.

Purpose:

To determine the clinical outcomes and recurrence rates after ACR in the BC versus LD position.

Study Design:

Systematic review; Level of evidence, 4.

Methods:

A systematic review using PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines was performed by searching PubMed, Embase, and the Cochrane Library databases for studies reporting clinical outcomes of patients undergoing ACR in either the BC or LD position. All English-language literature from 1990 through 2017 reporting on clinical outcomes after ACR with a minimum 3-month follow-up were reviewed by 2 independent reviewers. Recurrence rates, range of motion (ROM) results, and patient-reported outcome (PRO) scores were collected. Study methodological quality was evaluated using the modified Coleman Methodology Score (MCMS).

Results:

A total of 30 studies (3 level 1 evidence, 2 level 2 evidence, 4 level 3 evidence, 21 level 4 evidence) including 665 shoulders undergoing ACR in the BC position (38.1% male; mean age, 52.0 ± 3.9 years; mean follow-up, 35.4 ± 18.4 months) and 603 shoulders in the LD position (41.8% male; mean age, 53.0 ± 2.3 years; mean follow-up, 37.2 ± 16.8 months) were included. There were no significant differences in overall mean recurrence rates between groups (BC, 2.5%; LD, 2.4%; P = .81) or in any PRO scores between groups (P > .05). There were no significant differences in improvement in ROM between groups, including external rotation at the side (BC, 36.4°; LD, 42.8°; P = .91), forward flexion (BC, 64.4°; LD, 79.3°; P = .73), abduction (BC, 77.8°; LD, 81.5°; P = .82), or internal rotation in 90° of abduction (BC, 40.8°; LD, 45.5°; P = .70). Significantly more patients in the BC group (91.6%) underwent concomitant manipulation than in the LD group (63%) (P < .0001). There were significantly more patients with diabetes in the LD group (22.4%) versus the BC group (9.6%) (P < .0001).

Conclusion:

Low rates of recurrent shoulder stiffness and excellent improvements in ROM can be achieved after ACR in either the LD or BC position. Concomitant manipulation under anesthesia is performed more frequently in the BC position compared with the LD position.

Comparison of outcomes following arthroscopic capsular release for idiopathic, diabetic and secondary shoulder adhesive capsulitis: A Systematic Review

INTRODUCTION

Arthroscopic capsular release for adhesive capsulitis of the shoulder is a treatment option. The present study aimed to investigate the clinical outcomes following arthroscopic capsular release among idiopathic, diabetic and secondary adhesive capsulitis.

HYPOTHESIS

Different aetiological groups yield variable outcomes following arthroscopic capsular release.

MATERIALS AND METHODS

A literature search was performed using MEDLINE, EMBASE, CINAHL and the Cochrane Database in April 2017. Comparative studies that reported range of motion or functional outcomes following arthroscopic capsular release in patients with adhesive capsulitis were included. A systematic review of the studies was conducted following the PRISMA guidelines.

RESULTS

Six studies met the eligibility criteria. The overall population included 463 patients; 203 idiopathic, 61 diabetic and 199 secondary cases. Of four studies comparing idiopathic and diabetic patients, three reported significantly worse range of movement and function in the diabetic group at various follow up points. No significant difference in function and motion was reported between the idiopathic and secondary groups. Recurrent pain was highest in diabetic patients (26%) compared to idiopathic groups (0%) and the secondary group had a higher rate of revision surgery when compared to the idiopathic group (8.1% vs. 2.4%) DISCUSSION: Arthroscopic capsular release has a high success rate regardless of the underlying aetiology. However, diabetic patients are reported to have more residual pain, reduced motion and inferior function compared to idiopathic cases. The rate of revision capsular release is higher among patients with post-surgical adhesive capsulitis when compared to idiopathic cases.

LEVEL OF EVIDENCE

IV, systematic review.

Determination of magnetic resonance imaging criteria for diagnosis of adhesive capsulitis

The objective of this study was to identify optimal magnetic resonance imaging (MRI) parameters and their cutoff values for diagnosing adhesive capsulitis (AC). One hundred shoulder MRI images with stage 2 AC (AC group) and 100 MRI images without AC (control group) were randomly reviewed by two experienced shoulder specialists. They were asked whether MRI findings were compatible with AC and measurement of MRI parameters. Sensitivity, specificity, and accuracy were calculated. Correlation between MRI parameters and the range of motions was also analyzed. The mean capsular thickness in the axillary recess (AR) (5.9 mm in the AC group vs. 3.6 mm in the control group) on coronal oblique T2-weighted images and the rotator interval (RI) (7.2 mm vs. 4.8 mm, respectively) on oblique sagittal proton-density images were significantly greater in the AC group than in the control group, whereas the width of RI showed no significant difference between two groups. The highest diagnostic cutoff values were 4.5 mm for the AR and 6 mm for the RI, with sensitivity (91% and 88%, respectively), specificity (90% and 90%), and accuracy (90% and 89%). Capsular thickness in the AR and RI was significantly correlated with external rotation (P = 0.047) and internal rotation (P = 0.023). On conventional MRI, capsular thickness greater than 4.5 mm in the AR or 6 mm in the RI can be an optimal criterion for diagnosing AC. Capsular thickness in the AR and RI was correlated with the range of rotational motion.

Correlations between Capsular Changes and ROM Restriction in Frozen Shoulder Evaluated by Plain MRI and MR Arthrography

Background:

Evaluation of the Range Of Motion (ROM) is one of the important procedures for shoulder disorders. The purpose of this study was to investigate correlations between capsular changes and ROM restrictions evaluated by both plain magnetic resonance imaging (MRI) and Magnetic Resonance Arthrography (MRA) in the same patients with frozen shoulder.

Methods:

Between March 2015 and June 2016, 24 patients with frozen shoulders (13 male and 11 female patients, mean age 60.5) with severe ROM restriction who underwent both MRI and MRA on the same affected side were evaluated. We evaluated 1) ROM, 2) the coracohumeral ligament (CHL) thickness, 3) the joint capsule thickness in the axillary recess (humeral and glenoid sides), 4) the area of the axillary recess, and 5) the capsular area of the axillary recess.

Results:

Positive correlations were found between the axillary area and forward flexion (FF) (R = 0.43, P = 0.035), lateral elevation (LE) (R = 0.66, P<0.001), external rotation (ER)(R = 0.43, P = 0.035), 90° abduction with external rotation (AER)(R = 0.56, P = 0.004), and hand behind the back (HBB)(R = 0.6, P = 0.002) on MRA. Negative correlations were found between the joint capsule at the glenoid side and ER and HBB in both MRI and MRA.

Conclusion:

The axillary area was significantly correlated with ROM restriction in FF, LE, ER, AER, and HBB on MRA. Thickness of the joint capsule at the glenoid side is an important factor for ROM restriction in frozen shoulder.

Level of Evidence:

Level 3, Study of Diagnostic Test.

Arthroscopic Management of the Stiff Shoulder

Shoulder stiffness affects a diverse population of patients suffering a decrease in function and shoulder pain. Arthroscopic management of this debilitating spectrum of pathology is a safe and effective course of action in cases recalcitrant to nonoperative therapy. Arthroscopic management of the stiff shoulder has been reported to be effective in the treatment of stiffness due to adhesive capsulitis, birth palsy, stiffness in the setting of rotator cuff tears, and osteoarthritis in the posttraumatic patient, in the postoperative patient, and in the throwing athlete. Arthroscopic management is most effective in treating the stiff shoulder in the setting of adhesive capsulitis recalcitrant to nonoperative therapy or posttraumatic stiffness. Results are more guarded in the treatment of postoperative stiffness. Excessive force and trauma to the shoulder, including fracture of the humerus, can be avoided with a 360[degrees] capsular release for shoulder stiffness rather than manipulation under anesthesia.

Clinical Outcome after Arthroscopic Capsular Release for Adhesive Capsulitis of the Shoulder

Background

This study was undertaken to evaluate the outcome of the arthroscopic capsular release for adhesive capsulitis of the shoulder.

Methods

This study retrospectively investigated thirty shoulders in 29 patients who presented with recalcitrant adhesive capsulitis and underwent arthroscopic treatments. Other than typical findings of adhesive capsulitis, combined pathologies in the glenohumeral joint and subacromial space were evaluated by arthroscopy. Clinical evaluations were performed using the Constant’s score and ranges of motion (ROM) at preoperative, 6 months postoperatively and at the final follow-up.

Results

Our study included 17 women and 12 men with a mean age of 53.8 years (range, 34–74). Mean follow-up duration was 24 months (range, 12–40 months). Assessment of combined pathologies revealed that partial rotator cuff tear of less than 25% thickness, was most common (overall 83.3%; with bursal 57% and articular 23%). Subacromial synovitis and adhesion were also frequent (53.3%). The Constant score and ranges of motion significantly improved at the final follow-up, compared with preoperative levels. However, clinical results at 6 months postoperatively were found to be significantly inferior to those observed at the final follow-up (p≤0.001 for all factors). Functional impairment was the major complaint in 59.3% patients at the 6 months follow-up.

Conclusions

Although arthroscopic capsular release yielded favorable outcome at the mean 24 months follow-up, pain and motion limitations at 6-month postoperatively persisted in more than 50% of our patients. While combined pathologies were commonly encountered during arthroscopy, although their effects on surgical outcome in adhesive capsulitis remains unclear in this study.

Effect of nonoperative concomitant intraarticular pathologies on the outcome of arthroscopic capsular release for adhesive capsulitis of the shoulder

OBJECTIVE

The aim of this study was to investigate whether coexistent intraarticular lesions are negative prognostic factors for the results of arthroscopic capsular release in frozen shoulder patients.

METHODS

Seventy-two patients who met inclusion criteria and underwent arthroscopic capsular release between March 2011 and August 2015 for the frozen shoulder were retrospectively evaluated. The patients were divided into two groups according to existence of concomitant intraarticular pathologies detected during arthroscopy. Preoperative and postoperative functional results were assessed with Constant score and shoulder ranges of motion; and the amount of pain was evaluated using visual analog scale (VAS).

RESULTS

Group I consisted of 46 patients (mean age 47.2 years and mean follow-up 26 months) without concomitant shoulder pathologies and group II consisted of 26 patients (mean age 48.6 years and mean follow-up 15 months) with coexistent lesions (SLAP lesions, n = 8; SLAP and partial rupture of the RC, n = 4; SLAP, partial rupture of RC and impingement, n = 10; SLAP and impingement, n = 2; and AC arthritis and impingement, n = 2). Preoperatively, the mean ranges of forward flexion (p = 0.221), abduction (p = 0.065), internal rotation (p = 0.564), Constant (p = 0.148) and VAS (p = 0.365) scores were similar between the groups. After a minimum 12 months of follow-up, all patients significantly improved but no statistically significant difference was detected in the mean ranges of forward flexion (152 vs 150; p = 0.902), abduction (137 vs 129; p = 0.095), external rotation (45 vs 40; p = 0.866), internal rotation (5 vs 5 point; p = 0.474), Constant (82 vs 82.3; p = 0.685) and VAS (1.2 vs 1.2; p = 0.634) scores between the groups.

CONCLUSION

The presence of concomitant shoulder pathologies does not appear to affect the clinical outcomes in patients undergoing arthroscopic capsular release for frozen shoulder.

LEVEL OF EVIDENCE

Level III, Therapeutic study.

Effectiveness of translational manipulation under interscalene block for the treatment of adhesive capsulitis of the shoulder: A nonrandomized clinical trial

Study Design: Nonrandomized controlled trial. Objective: To determine whether translational manipulation under anesthesia/local block (TMUA) adds to the benefit of mobilization and range of motion exercise for improving pain and functional status among patients with adhesive capsulitis of the shoulder (AC). Background: TMUA has been shown to improve pain and dysfunction in patients with AC. This intervention has not been directly compared to physical therapy treatment without TMUA in a prospective trial. Methods: Sixteen consecutive patients with a primary diagnosis of AC were divided into two groups. Patients in the first (TMUA) group received a session of translational manipulation under interscalene block, followed by six sessions of manipulation and exercise. Patients in the comparison group received seven sessions of manipulation and exercise. Outcome measures taken at baseline and 3, 6, 12 months and 4 years included Shoulder Pain and Disability Index (SPADI) scores. Four-year outcomes included percent of normal ratings, medication use, and activity limitations. Results: Both groups showed improved SPADI scores across all follow-up times compared to baseline. The TMUA group showed a greater improvement in SPADI scores than the comparison group at 3 weeks, with no significant differences in SPADI scores at other time points. However, at 4 years, significantly more subjects in the comparison group (5 of 8) had activity limitations versus subjects in the TMUA group (1 of 8). No subject experienced a complication from either intervention protocol. Conclusion: Physical therapy consisting of manual therapy and exercise provides benefit for patients with AC. Translational manipulation under local block may be a useful adjunct to manual therapy and exercise for patients with AC.

Clinical Outcomes of Arthroscopic 360° Capsular Release for Idiopathic Adhesive Capsulitis in the Lateral Decubitus Position

PURPOSE

To report outcomes after arthroscopic 360° capsular release in the lateral decubitus position for idiopathic glenohumeral adhesive capsulitis without manipulation under anesthesia.

METHODS

A retrospective case series of patients who underwent arthroscopic capsular release in the lateral decubitus position for idiopathic adhesive capsulitis with minimum 2-year follow-up was conducted. Patient demographics, preoperative range of motion (ROM), postoperative ROM, and the postoperative outcome scores, visual analog scale for pain, Single Assessment Numeric Evaluation, Simple Shoulder Test, and American Shoulder and Elbow Surgeons scores, were recorded. Complications and reoperations were recorded. Paired t-tests were used to compare preoperative and postoperative ROM, with P < .05.

RESULTS

Overall, 43 patients were identified, of whom 10 were excluded because of post-traumatic etiology. Of the remaining 33 patients, 27 (81.8%) completed a minimum follow-up of 2 years. The mean age was 54.8 with a standard deviation of 7.4 years and 78% were female, with the duration of symptoms of 16.2 ± 21.0 (range, 3-125) months. Hypothyroidism was present in 7% and diabetes present in 30%. Active forward flexion improved from 115.0° ± 21.9° to 156.2° ± 16.1° at the final follow-up (mean difference, 41.2; 95% confidence interval [33.7, 48.7]; P < .001). Active external rotation with the arm adducted improved from 28.1° ± 16.3° preoperatively to 56.8° ± 15.7° at the final follow-up (mean difference, 27.7; 95% confidence interval [19.1, 36.3]; P < .001). Significant ROM improvements were seen even as early as 2 weeks postoperatively (P < .001). Two patients (7%) had manipulation under anesthesia postoperatively due to early recurrent stiffness 4 to 6 weeks after arthroscopic capsular release. There were no revision surgeries or complications.

CONCLUSIONS

Arthroscopic 360° capsular release in the lateral decubitus position for idiopathic adhesive capsulitis results in a significant early and lasting improvement in ROM, excellent functional outcomes, and low revision and complication rates.

LEVEL OF EVIDENCE

Level IV, retrospective case series.

Continuous Infraclavicular Brachial Block Versus Single-Shot Nerve Block for Distal Radius Surgery: A Prospective Randomized Control Trial

OBJECTIVES

To compare the efficacy of an infraclavicular single-shot nerve block to a continuous infusion through an OnQ infusion pump for rebound pain (between 12 and 24 hours postoperatively) and postoperative narcotic analgesia requirements in distal radius fractures.

DESIGN

Prospective randomized control trial.

SETTINGS

Performed at 2 hospitals affiliated with a large urban academic medical center.

PATIENTS

Fifty patients undergoing operative fixation of distal radius fractures (OTA/AO type 23B/C).

INTERVENTION

Patients were randomized to receive either an infraclavicular block as a single shot (SSB group) or a continuous infusion through an OnQ pump (OnQ group).

MAIN OUTCOME MEASURES

Visual analog scale (0-10) pain levels and amount of pain medication taken.

RESULTS

At all time points after discharge, mean postoperative pain scores were lower in the OnQ group versus the SSB group but did not reach statistical significance. At 12 hours postoperatively, the SSB group and OnQ group pain scores, respectively, were 5.2 and 4.1 (P = 0.1615). At 24 hours, the pain scores for the SSB and OnQ group, respectively, were 5.4 and 4.8 (P = 0.1918). At these same time points, the Percocet taken were the same at 1.3 and 2.3 (P = 0.8328 and 0.8617). Overall 5 of 24 patients in the OnQ group had pump malfunctions with 4 being removed before 48 hours.

CONCLUSION

OnQ pump is not associated with statistically improved postoperative pain control compared with a single nerve block for distal radius fractures and did not address rebound pain.

LEVEL OF EVIDENCE

Therapeutic Level II. See Instructions for Authors for a complete description of levels of evidence.

MID-LONG TERM RESULTS OF MANIPULATION AND ARTHROSCOPIC RELEASE IN FROZEN SHOULDER

OBJECTIVE

Surgical treatment options should be discussed in cases of frozen shoulder, which is usually treated in a conservative manner. In this study, we evaluated the efficacy of manipulation and arthroscopic release in cases of frozen shoulder which resisted conservative treatment.

METHODS

A total of 32 patients who underwent manipulation and arthroscopic capsular release in 34 shoulders were included in the study. The average follow-up period was 49.5 months (range: 24-90 months). No reason for onset could be found in 8 (25%) patients, who were classified as primary frozen shoulder; twenty-four (75%) patients were classified as secondary frozen shoulder due to underlying pathologies. The average pre-operative complaint period was 11 months (range: 3-24 months). After arthroscopic examination, manipulation was performed first, followed by arthroscopic capsular release. The range of motion in both shoulders was compared before the procedure and in the last follow-up visit. Constant and Oxford classifications were used to assess functional results, and the results were assessed statistically.

RESULTS

Patient values for passive elevation, abduction, adduction-external rotation, abduction-external rotation, and abduction-internal rotation increased in a statistically significant manner between the preoperative assessment and follow-up evaluation (p<0.01). The average change of 47.97±21.03 units observed in the patients' values obtained in the control measurements against the pre-op Constant scores was determined to be statistically significant (p<0.01). According to the Oxford classification, 29 shoulders were sufficient.

CONCLUSION

Successful results can be obtained with arthroscopic release performed after manipulation in patients with frozen shoulder resistant to conservative treatment. Level of Evidence IV, Case Series.

Shoulder Adhesive Capsulitis in Type 1 Diabetes Mellitus: A Cross-Sectional Study on 943 Cases in Sardinian People

Purpose  To evaluate the prevalence of adhesive capsulitis (AC) of the shoulder in patients with type 1 diabetes mellitus (T1DM) in Sardinia.

Methods  In this cross-sectional study, we evaluated 943 patients with T1DM attending the division of Endocrinology and Metabolism at the University Hospital in Sassari, Italy. The criteria for diagnosing AC were: pain for at least 1 month, inability to lie on the affected shoulder, and restricted active and passive shoulder joint movements in at least three planes. Age, gender, duration of DM, blood pressure, and presence of neuropathy and retinopathy were noted. Metabolic control of DM was evaluated with glycosylated hemoglobin A1c (GHbA1c) blood concentrations.

Results  AC was diagnosed in 331 patients (prevalence: 35.1%). Age, duration of DM, high blood pressure levels, and the presence of neuropathy and retinopathy were significantly associated with AC. No significant association was observed between gender and AC. There was no significant difference in mean levels of GHbA1c in T1DM patients with or without AC.

Conclusion  This study shows that AC of the shoulder is a common disorder in patients with T1DM in Sardinia. It is significantly associated with age, duration of DM, and related complications.

Level of Evidence  Level IV, observational cross-sectional study.

The Rotator Interval - A Link Between Anatomy and Ultrasound

Shoulder pathologies of the rotator cuff of the shoulder are common in clinical practice. The focus of this pictorial essay is to discuss the anatomical details of the rotator interval of the shoulder, correlate the anatomy with normal ultrasound images and present selected pathologies. We focus on the imaging of the rotator interval that is actually the anterosuperior aspect of the glenohumeral joint capsule that is reinforced externally by the coracohumeral ligament, internally by the superior glenohumeral ligament and capsular fibers which blend together and insert medially and laterally to the bicipital groove. In this article we demonstrate the capability of high-resolution musculoskeletal ultrasound to visualize the detailed anatomy of the rotator interval. MSUS has a higher spatial resolution than other imaging techniques and the ability to examine these structures dynamically and to utilize the probe for precise anatomic localization of the patient's pain by sono-palpation.

Frozen shoulder - A prospective randomized clinical trial

AIM

To compare the results of arthroscopic capsular release with intra-articular steroid injections in patients of frozen shoulder.

METHODS

Fifty-six patients with frozen shoulder were randomised to one of two treatment groups: Group 1, complete 360 degree arthroscopic capsular release and group 2, intra-articular corticosteroid injection (40 mg methyl prednisolone acetate). Both groups were put on active and passive range of motion exercises following the intervention. The outcome parameters were visual analogue scale (VAS) score for pain, range of motion and Constant score which were measured at baseline, 4, 8, 12, 16 and 20 wk after intervention.

RESULTS

All the parameters improved in both the groups. The mean VAS score improved significantly more in the group 1 as compared to group 2 at 8 wk. This greater improvement was maintained at 20 wk with P value of 0.007 at 8 wk, 0.006 at 12 wk, 0.006 at 16 wk and 0.019 at 20 wk. The Constant score showed a more significant improvement in group 1 compared to group 2 at 4 wk, which was again maintained at 20 wk with P value of 0.01 at 4, 8, 12 and 16 wk. The gain in abduction movement was statistically significantly more in arthroscopy group with P value of 0.001 at 4, 8, 12, 16 wk and 0.005 at 20 wk. The gain in external rotation was statistically significantly more in arthroscopy group with P value of 0.007 at 4 wk, 0.001 at 8, 12, and 16 wk and 0.003 at 20 wk. There was no statistically significant difference in extension and internal rotation between the two groups at any time.

CONCLUSION

Arthroscopic capsular release provides subjective and objective improvement earlier than intra-articular steroid injection.

Management of the Stiff Shoulder With Arthroscopic Circumferential Capsulotomy and Axillary Nerve Release

Management of the stiff shoulder is a common and frequently daunting clinical scenario. Arthroscopic capsular release is usually an option for management of severe, chronic glenohumeral joint contractures when conservative treatment fails. Technical hurdles including a thickened capsule, reduction in joint volume, and difficulty with positioning the shoulder intraoperatively can make this procedure challenging. In addition, incomplete release and recalcitrant stiffness are frequent issues. We believe a complete release of the capsule entails special attention to the axillary pouch and requires identification and protection of the axillary nerve. We present a technique for a complete arthroscopic circumferential capsulotomy and detail our approach to safely dissect and protect the axillary nerve under arthroscopic visualization.

Correlations of coracohumeral ligament and range of motion restriction in patients with recurrent anterior glenohumeral instability evaluated by magnetic resonance arthrography

BACKGROUND

Evaluation of range of motion (ROM) restriction before treatment of shoulder disorders is important for predicting the final functional outcomes. The purpose of this study was to investigate correlations of thickness of the coracohumeral ligament (CHL) and ROM restriction in patients with recurrent anterior glenohumeral instability.

METHODS

Between January 2005 and March 2015, 181 shoulders (137 male and 44 female patients; mean age, 29.3 years) with recurrent anterior glenohumeral instability treated with an arthroscopic Bankart repair were enrolled in this study. We evaluated preoperative ROM, thickness of the CHL, and obliteration of the subcoracoid fat triangle on magnetic resonance arthrography. ROM measurements, including forward flexion (FF), external rotation with the arm at the side (ER), and hand behind the back (HBB), were made in a standing position.

RESULTS

There were significant negative correlations between FF and age (P < .001) and between HBB and age (P < .001) but not between ER and age (P = .11). The thickness of the CHL significantly increased with age (P < .001). FF, ER, and HBB were significantly restricted in patients with obliteration compared with those without obliteration (P < .001, P = .004, P < .001, respectively).

CONCLUSIONS

Obliteration of the subcoracoid fat triangle and the thickness of the CHL positively correlated with ROM restrictions, and these changes were greater with age in patients with recurrent anterior glenohumeral instability.

Clinical evaluation of arthroscopic treatment of shoulder adhesive capsulitis

OBJECTIVE

To evaluate the results of arthroscopic releases performed in patients with adhesive capsulitis refractory to conservative treatment.

METHODS

This was a retrospective study, conducted between 1996 and 2012, which included 56 shoulders (52 patients) that underwent surgery; 38 were female, and 28 had the dominant side affected. The mean age was 51 (29-73) years. The mean follow-up was 65 (12-168) months and the mean preoperative time was 8.9 (2-24) months. According to Zukermann's classification, 23 cases were considered primary and 33 secondary. With the patient in the lateral decubitus position, circumferential release of the joint capsule was performed: joint debridement; rotator interval opening; coracohumeral ligament release; anterior, posterior, inferior, and finally antero-inferior capsulotomy. A subscapularis tenotomy was performed when necessary. All patients underwent intense physical therapy in the immediate postoperative period. In 33 shoulders, an interscalene catheter was implanted for anesthetic infusion. Functional results were evaluated by the UCLA criteria.

RESULTS

Improved range of motion was observed: mean increase of 45° of elevation, 41° of external rotation and eight vertebral levels of medial rotation. According to the UCLA score excellent results were obtained in 25 (45%) patients; good, in 24 (45%); fair, in two (3%); and poor, in two (7%). Patients who had undergone inferior capsulotomy achieved better results. Only 8.8% of patients who used the anesthetic infusion catheter underwent postoperative manipulation. Seven patients had complications.

CONCLUSION

There was improvement in pain and range of motion. Inferior capsulotomy leads to better results. The use of the interscalene infusion catheter reduces the number of re-approaches.

Shoulder Stiffness: Current Concepts and Concerns

Shoulder stiffness can be caused by various etiologies such as immobilization, trauma, or surgical interventions. The Upper Extremity Committee of ISAKOS defined the term "frozen shoulder" as idiopathic stiff shoulder, that is, without a known cause. Secondary stiff shoulder is a term that should be used to describe shoulder stiffness with a known cause. The pathophysiology of frozen shoulder is capsular fibrosis and inflammation with chondrogenesis, but the cause is still unknown. Conservative treatment is the primary choice. Pain control by oral medication, intra-articular injections with or without joint distension, and physical therapy are commonly used. In cases with refractory stiffness, manipulation under anesthesia or arthroscopic capsular release may be indicated. Because of various potential risks of complications with manipulations, arthroscopic capsular release is preferred. After the capsular release, stepwise rehabilitation is mandatory to achieve satisfactory outcome.

LEVEL OF EVIDENCE

Level V, evidence-based review.

Shoulder proprioception - lessons we learned from idiopathic frozen shoulder

Background

Of all the most frequent soft tissue disorders of the shoulder, idiopathic frozen shoulder (IFS) offers the greatest potential for studying proprioception. Studies concerning the presence of proprioception dysfunctions have failed to determine the potential for spontaneous healing of passive shoulder stabilizers (anterior and posterior capsule, middle and inferior gleno-humeral ligaments), its relationship with passive (PJPS) and active (AJPS) shoulder proprioception for internal and external rotation (IR, ER), as well as the isokinetic muscle performance of the internal and external rotators. This study investigates these dependencies in the case of arthroscopic release of IFS.

Methods

The study group comprised 23 patients (average aged 54.2) who underwent arthroscopic release due to IFS and 20 healthy volunteers. The average follow-up time was 29.2 months. The Biodex system was used for proprioception measurement in a modified neutral arm position and isokinetic evaluation. The results were analysed using the T-test, Wilcoxon and interclass correlation coefficient. P-values lower than 0.05 were considered significant.

Results

Statistically significant differences were found between involved (I) and uninvolved (U) shoulders only in the cases of PJPS and AJPS, peak torque, time to peak torque and acceleration time for ER (p < 0.05). No statistically significant difference was noted between PJPS IR and PJPS ER or between AJPS IR and AJPS ER (p > 0.05) for the U shoulders.

Conclusions

The anatomical structure of anterior (capsule, middle and anterior band of inferior gleno-humeral ligament) and posterior (capsule and posterior band of inferior gleno-humeral ligament) passive shoulder restraints has no impact on the difference in PJPS values between ER and IR in a modified neutral shoulder position. The potential for spontaneous healing of the anterior and posterior passive shoulder restraints influences PJPS recovery after arthroscopic release of IFS. ER peak torque deficits negatively affect AJPS values. PJPS and AJPS of ER and IR can be measured with a high level of reproducibility using an isokinetic dynamometer with the arm in a modified neutral shoulder position. Differences greater than 15 % for PJPS and >24 % for AJPS for ER and IR can be helpful for future studies as baseline data for identification of particular passive and active shoulder stabilizers at risk.

Rates of surgery for frozen shoulder: an experience in England

AIM

the aim of this study was to identify the incidence of surgical treatment for frozen shoulder in a western population.

METHODS

patients included in this study all resided within a well-defined area in the North West of England, all had surgery for frozen shoulder over a 3-year period and were identified from theatre logbooks of two local hospitals. Cases having surgery for shoulder stiffness other than frozen shoulder were excluded. Local and national population size estimates were based on data obtained from the UK Office for National Statistics.

RESULTS

117 patients underwent surgery for frozen shoulder during the period examined; of these 101 had arthroscopic arthrolysis and 16 had manipulation under anaesthesia. The overall incidence of frozen shoulder surgery was calculated at 2.67 procedures per 10,000 general population per year, and at 7.55 for those aged 40-60.

CONCLUSION

surgical intervention for frozen shoulder is common, estimated at over 14,180 cases per year in England. Given the variation in costs associated with arthroscopic arthrolysis and manipulation under anaesthesia, comparative studies of the cost effectiveness of the two procedures would be of great value.

LEVEL OF EVIDENCE

2C (outcome research).

Pectoralis minor tendon in the rotator interval: arthroscopic, magnetic resonance imaging findings, and clinical significance

BACKGROUND

Although insertional variation of the pectoralis minor on the rotator interval has been reported, more detailed characteristics as seen on magnetic resonance imaging (MRI) or arthroscopy and clinical significance have been rarely discussed. This study evaluated the prevalence of tendinous insertion of the pectoralis minor by arthroscopy and diagnostic performances of MRI and suggests its clinical implication in rotator cuff repair.

MATERIALS AND METHODS

The study prospectively recruited 99 consecutive patients for arthroscopic exploration of pectoralis minor insertion. Preoperative MRIs were evaluated to detect tendinous insertion of the pectoralis minor by 2 independent, blinded observers, and these results were correlated with arthroscopy as the gold standard. During arthroscopy, the effect of this variation on supraspinatus tendon tear and repair was evaluated.

RESULTS

Tendinous insertion of the pectoralis minor was found in 11 patients (11%) at arthroscopy. The sensitivity and specificity of MRI were 64% (95% confidence interval [CI], 31%-89%), the specificity was 82% (95% CI, 72%-89%), and the accuracy was 80% (95% CI, 72%-88%). Intraobserver and interobserver reliability tests showed moderate agreements. In 7 patients, it tethered the retracted supraspinatus tendon from mobilization and gave rise to tension on the repaired cuff, which warranted complete resection of the pectoralis minor tendon for a tension-free cuff repair.

CONCLUSIONS

Tendinous insertion of the pectoralis minor existed with 11% prevalence in our series and could be preoperatively detected on MRI. During arthroscopic rotator cuff repair, it can be an obstacle to supraspinatus tendon mobilization and repair.

The management of secondary frozen shoulder after anterior shoulder dislocation - The results of manipulation under anaesthesia and injection

INTRODUCTION

Patients with secondary frozen shoulder following anterior dislocation were treated with manipulation under anaesthesia (MUA) and injection.

METHODS

Ten patients included in study. Oxford Shoulder Scores (OSS), range of motion (ROM) and need for any further treatment measured.

RESULTS

Mean follow-up of 93 weeks. OSS and ROM improved in all patients. Three patients required repeat MUA. Two patients developed recurrent instability.

DISCUSSION

Secondary frozen shoulder may be more recalcitrant. Recurrent instability is a risk following anterior shoulder dislocation. It is feasible that by performing an MUA to maximise mobility, stability may be sacrificed. It should be performed with caution.

Are delayed operations effective for patients with rotator cuff tears and concomitant stiffness? An analysis of immediate versus delayed surgery on outcomes

PURPOSE

The purpose of this study was to compare the clinical outcomes of immediate rotator cuff repair with capsular release and those of rotator cuff repair after the stiffness was treated with rehabilitative therapy.

METHODS

Between June 2007 and December 2010, we recruited 63 patients with rotator cuff tears and stiffness. In 33 patients arthroscopic rotator cuff repair was performed with capsular release simultaneously (group I). In 30 patients arthroscopic rotator cuff repair was performed after 6 months of preoperative rehabilitation for stiffness (group II). The American Shoulder and Elbow Surgeons score, Simple Shoulder Test score, Constant score, and visual analog scale score for pain and range of motion (ROM) were assessed at the start of the study; at 3, 6, and 12 months; and at the last visit. The postoperative cuff tendon integrity was assessed between 6 and 12 months using magnetic resonance or ultrasound images.

RESULTS

There were no significant differences in preoperative demographic data between the groups (P > .05). The mean follow-up period was 21.54 months. After treatment, there was significant improvement in ROM and functional scores in both groups, as measured at the last follow-up (P < .05). No statistical differences were found in clinical scores and ROM at the last follow-up (P > .05). On assessment of the magnetic resonance or ultrasound images taken 6 to 12 months postoperatively, the retear rate for the repaired cuff tendon in each group was 12.1% in group I and 13.4% in group II.

CONCLUSIONS

In the treatment of rotator cuff tears with stiffness, satisfactory results can be achieved either by repairing the tear with simultaneous capsular release or by waiting to perform the repair after preoperative rehabilitation for stiffness. Because a delayed rotator cuff repair after improving ROM offered no clear advantage over an immediate operation, we recommend surgically treating rotator cuff tears with concomitant stiffness early using a simultaneous capsular release method to save time and to avoid unnecessary rehabilitation.

LEVEL OF EVIDENCE

Level II, prospective comparative study.

The impact of arthroscopic capsular release in patients with primary frozen shoulder on shoulder muscular strength

The aim of this study was to evaluate the impact of arthroscopic capsular release in patients with primary frozen shoulder on muscular strength of nonaffected and treated shoulder after at least two-year follow-up after the surgery. The assessment included twenty-seven patients, who underwent arthroscopic capsular release due to persistent limitation of range of passive and active motion, shoulder pain, and limited function of upper limb despite 6-month conservative treatment. All the patients underwent arthroscopic superior, anteroinferior, and posterior capsular release. After at least two-year follow-up, measurement of muscular strength of abductors, flexors, and external and internal rotators of the operated and nonaffected shoulder, as well as determination of range of motion (ROM) and function (ASES) in the operated and nonaffected shoulder, was performed. Measurement of muscular strength in the patient group did not reveal statistically significant differences between operated and nonaffected shoulder. The arthroscopic capsular release does not have significant impact on the decrease in the muscular strength of the operated shoulder.

Clinical outcomes do not support arthroscopic posterior capsular release in addition to anterior release for shoulder stiffness: a randomized controlled study

BACKGROUND

Arthroscopic capsular release is an effective treatment for shoulder stiffness, yet its extent is controversial.

PURPOSE

To compare the clinical outcomes of arthroscopic capsular release in patients with and without posterior extended capsular release for shoulder stiffness.

STUDY DESIGN

Randomized controlled trial; Level of evidence, 1.

METHODS

Between January 2008 and March 2011, 75 patients who underwent arthroscopic capsular release for shoulder stiffness were enrolled and randomized into 2 groups. In group I (n = 37), capsular release was performed, including release of the rotator interval and anterior and inferior capsule. In group II (n = 38), capsular release was extended to the posterior capsule. The American Shoulder and Elbow Surgeons score, Simple Shoulder Test, visual analog scale for pain, and range of motion (ROM) were used for the evaluation before surgery and at 3, 6, and 12 months after surgery and at the last follow-up.

RESULTS

Preoperative demographic data of age, sex, symptom duration, and clinical outcomes showed no significant differences (P > .05). The average follow-up was 18.4 months. Both groups showed significantly increased ROM at the last follow-up compared with preoperative ROM (P < .05). At the last follow-up, no statistical differences were found (P > .05) between groups I and II in American Shoulder and Elbow Surgeons score (91.3 vs. 79.5), Simple Shoulder Test (83.3 vs. 83.3), and visual analog scale (1.5 vs. 2.2). There were also no statistical differences between the 2 groups at the last follow-up (P > .05) in ROM: forward flexion, 145.2° vs. 143.3°; external rotation with 90° of abduction, 88.1° vs. 86.2°; external rotation at side, 88.9° vs. 82.9°; and internal rotation, 9.1° vs. 8.3°.

CONCLUSION

Posterior extended capsular release might not be necessary in arthroscopic surgery for shoulder stiffness.

Functional results and patient satisfaction after arthroscopic capsular release of idiopathic and post-traumatic stiff shoulder

PURPOSE

The purpose of this prospective study was to compare the functional results and patient satisfaction after arthroscopic shoulder capsular release in patients with idiopathic and posttraumatic stiff shoulder.

METHODS

The study included 50 patients who underwent arthroscopic capsular release after failure of conservative treatment. The etiology of stiffness was either idiopathic (25 patients) or post-traumatic (25 patients). There were 28 women and 22 men with an average age of 49 years (range, 32-70 years). All patients were treated with physical therapy for a mean of six months (range, 3-12 months) before surgery. Range of motion was measured three times: 48 hours after surgery, then one month and six months after surgery.

RESULTS

Constant score showed improvement for both groups of patients in the period of six months after surgery. In the group with idiopathic stiffness the score increased from 36 to 86, while in the group with post-traumatic stiff shoulder the score advanced from 32 to 91. The idiopathic stiff shoulder group had an improved active forward flexion from 90 to 161°, external rotation from 10 to 40°, and internal rotation from L5 to L1. In the post-traumatic stiff shoulder groupthe forward flexion was improved from 95 to 170°, external rotation from 13 to 40° and internal rotation from L4 to L1.

CONCLUSION

There was an improvement of range of motions and patients' satisfaction after arthroscopic shoulder capsular release and manipulation under anesthesia, equally in idiopathic and post-traumatic stiff shoulder, compared to the situation before surgery. Post-traumatic contracture patients expressed higher level of satisfaction with their shoulder function than the idiopathic stiff shoulder patients.

Arthroscopic capsular release for idiopathic frozen shoulder with intra-articular injection and a controlled manipulation

INTRODUCTION

The aim of this prospective study was to assess the immediate and long-term effectiveness of arthroscopic capsular release in a large cohort of patients with a precise and isolated diagnosis of stage II idiopathic frozen shoulder.

METHODS

All patients underwent a preoperative evaluation. Patients with secondary frozen shoulder and those with concurrent pathology at arthroscopy were excluded. This left 136 patients with a stage II arthroscopically confirmed idiopathic frozen shoulder. At each postoperative attendance, a record was made of pain, function and range of motion. At 12 months, the Oxford shoulder score was calculated, and pain and range of motion were assessed.

RESULTS

Fifty per cent achieved good pain relief within a week and eighty per cent within six weeks of arthroscopic capsular release. The mean preoperative visual analogue scale pain score was 6.6 and the mean postoperative score was 1.0. The mean time to achieving good pain relief was 16 days following surgery. No patient could sleep through the night prior to surgery while 90% reported having a complete night's sleep at a mean of 12 days after surgery. The mean postoperative Oxford shoulder score was 38/48 and the mean improvement was 19.2.

CONCLUSIONS

This large series demonstrates that arthroscopic capsular release is a safe procedure, with rapid improvement in pain and a marked improvement in range of motion.

The frozen shoulder: myths and realities

Frozen shoulder is a common, disabling but self-limiting condition, which typically presents in three stages and ends in resolution. Frozen shoulder is classified as primary (idiopathic) or secondary cases. The aetiology for primary frozen shoulder remains unknown. It is frequently associated with other systemic conditions, most commonly diabetes mellitus, or following periods of immobilisation e.g. stroke disease. Frozen shoulder is usually diagnosed clinically requiring little investigation. Management is controversial and depends on the phase of the condition. Non-operative treatment options for frozen shoulder include analgesia, physiotherapy, oral or intra-articular corticosteroids, and intra-articular distension injections. Operative options include manipulation under anaesthesia and arthroscopic release and are generally reserved for refractory cases.

Revision posterior shoulder stabilization

BACKGROUND

Revision arthroscopic posterior glenohumeral stabilization requires a thorough understanding of the static and dynamic stabilizers of the glenohumeral joint. The evaluation of these patients is complex but critical given the variety of possible underlying lesions.

METHOD

We reviewed the literature surrounding recurrent and revision posterior instability biomechanics, etiology, evaluation, treatment, and outcomes. We also reviewed our own database of posterior instability cases and isolated revision procedures to review our own outcomes and to highlight overall concepts.

DISCUSSION/CONCLUSION

Although other authors have argued that performing a revision procedure indicates for an open procedure and osseous augmentation, our experience has been that revision posterior stabilization arthroscopic soft-tissue repair alone may be indicated in selected patients. After identification of posterior glenoid bone loss/effective retroversion and mechanical failure of prior repairs, the majority of the patients with recurrence of posterior instability likely have either recurrent or persistent labral pathology or patulous capsules with occult multi-directional instability primarily manifesting in the posterior direction. These patients are best served with capsular shift, reefing, and plication, often requiring 180-270° repair and 4 or greater suture anchors. Because of significant heterogeneity in the clinical outcomes reported to date further research will be necessary to define the clinical outcomes in revision posterior stabilization.

Comparison of manipulation and arthroscopic capsular release for adhesive capsulitis: a systematic review

BACKGROUND

It is currently unclear as to whether there is a difference in the clinical effectiveness of an arthroscopic capsular release compared to a manipulation under anaesthesia (MUA) in patients with recalcitrant idiopathic adhesive capsulitis.

METHODS

A systematic review was performed using computerized keyword searches of MEDLINE, EMBASE, CINAHL, the Cochrane Central Register of Controlled Trials, and the Cochrane Database of Systematic Reviews. Two reviewers independently performed searches and article reduction. Studies that reported outcomes data following either a manipulation under regional or general anaesthesia or an arthroscopic capsular release in patients with idiopathic adhesive capsulitis were included. Data on clinical measures of shoulder range of motion and subjective outcome measures were extracted and summarized.

RESULTS

Twenty-two studies (21 studies provided level IV evidence) including 989 patients were included resulting in a comparison of 9 MUA and 17 capsular release groups. Patients were 60% female with a median age of 52 years old (range, 24-91 years). Median duration of symptoms and follow-up were 9 months (range, 3-50) and 35 months (range, 3-189), respectively. There were minimal differences in the median changes in abduction, flexion, and external rotation range of motion (ROM), and final Constant score between the MUA and capsular release groups.

CONCLUSION

The quality of evidence available is low and the data available demonstrate little benefit for a capsular release instead of, or in addition to, an MUA. A high quality study is required to definitively evaluate the relative benefits of these procedures.

One-stage arthroscopic repair of rotator cuff tears with shoulder stiffness

PURPOSE

The purpose of this study is to describe a 1-stage treatment with concomitant arthroscopic capsular release and rotator cuff repair and present clinical outcomes with a minimum follow-up of 2 years.

METHODS

Arthroscopic rotator cuff repair was performed in 211 consecutive patients. Forty-three patients had severe concomitant shoulder stiffness at the time of the repair. In the stiffness group, 1-stage arthroscopic capsular release and rotator cuff repair were performed. Preoperative mean passive forward flexion was 124°, whereas external rotation at the side was 309°. All patients were evaluated at a minimum 2-year follow-up, which included a visual analog scale score for pain, tests of muscle power and range of motion, the Constant score, and the modified American Shoulder and Elbow Surgeons shoulder evaluation form and modified University of California, Los Angeles scores.

RESULTS

The mean visual analog scale score during motion at the last follow-up was 1.5 in the stiffness group and 1.3 in the non-stiffness group. In the stiffness group, forward flexion was 175° whereas external rotation at the side was 60° postoperatively; shoulder motion improved (P < .001) and was comparable with that of the contralateral side. Other functional outcome instruments showed no statistical difference between the 2 groups.

CONCLUSIONS

In this study, 1-stage treatment of patients with rotator cuff tears and shoulder stiffness was performed by arthroscopic capsular release and cuff repair, and overall satisfactory results were achieved in selected patients. The results of the stiffness group in this study were statistically the same as those in the non-stiffness group.

LEVEL OF EVIDENCE

Level III, retrospective comparative study.