Frozen shoulder: a 12-month clinical outcome trial

Adhesive Capsulitis

Adhesive capsulitis, colloquially known as "frozen shoulder," is a relatively common disorder, affecting approximately 2% to 5% of the general population. The incidence may be higher as the condition can be relatively mild and self-limited and thus many patients who experience it may never present for treatment. It involves a pathologic process of gradual fibrosis of the glenohumeral joint that leads to limited active and passive range of motion, contracture of the joint capsule, and shoulder pain.

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.

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.

Distension arthrogram in the treatment of adhesive capsulitis has a low rate of repeat intervention

AIMS

The primary aim of this study was to evaluate the efficacy of distension arthrography in the treatment of adhesive capsulitis of the shoulder. The secondary aim was to assess which patient and procedural factors predicted the recurrence of symptoms after the procedure.

METHODS

All patients referred to our shoulder clinic over a ten-year period, between 2008 and 2018, with a clinical diagnosis of capsulitis and symptoms persisting for more than six months, were offered treatment with a distension arthrogram. All procedures were performed by one of five musculoskeletal radiologists, with a combination of steroid, local anaesthetic, and a distention volume of 10 ml, 30 ml, or 50 ml. Patient demographics, procedural details, recurrence of symptoms, and the need for further intervention were evaluated.

RESULTS

A total of 2,432 distension arthrograms were performed during the study period. The mean time between arthrography and analysis was 5.4 years (SD 4.4; 1 to 11). Recurrent symptoms occurred in 184 cases (7.6%), all of whom had a repeat distension arthrogram at a median of nine months (interquartile range (IQR) 6.0 to 15.3). The requirement for further intervention for persistent symptoms following arthrography was significantly associated with diabetes (p < 0.001) and bilateral capsulitis (p < 0.001). The volume of distension, either with air or saline, showed a dose-dependent advantage. Distension of 50 ml versus 30 ml showed a significantly decreased odds ratio for recurrence of 2.2 (95% confidence interval (CI) 1.6 to 3.0; p < 0.001). Capsule rupture (p = 0.615) or steroid dose (p = 0.275) did not significantly affect the rate of recurrence. There were no infections or neurovascular injuries. Following the second distension arthrogram, the symptoms resolved in 137 cases (74.5%) with no further intervention being required. An arthroscopic capsular release was ultimately required in 41 cases, comprising 1.7% of the entire cohort.

CONCLUSION

We found a low rate of repeat intervention following distension arthrography in patients with adhesive capsulitis of the shoulder, at long term follow-up. Greater volumes of distension are associated with lower rates of recurrence independent of capsule rupture. Cite this article: Bone Joint J 2020;102-B(5):606-610.

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.

The effectiveness of conservative and surgical treatment for shoulder stiffness: a systematic review of current literature

INTRODUCTION

Currently, no therapeutic intervention is universally accepted, and the most effective management for restoring motion and diminishing pain in patients with shoulder stiffness has yet to be defined. This systematic review analyses outcomes of conservative and surgical interventions to treat shoulder stiffness.

SOURCE OF DATA

A systematic review of literature according to the PRISMA guidelines was performed. A comprehensive search of PubMed, Medline, CINAHL, Cochrane, Embase, Ovid and Google Scholar databases using various combinations of the keywords 'shoulder', 'shoulder stiffness', 'stiff shoulder', 'conservative', since inception of databases to June 2018 was performed.

AREAS OF AGREEMENT

Shoulder stiffness could be treated with conservative means including nonsteroidal anti-inflammatory medications, corticosteroid injections, or transcutaneous electrical nerve stimulation, manipulation under anaesthesia, and arthroscopic capsular release.

AREAS OF CONTROVERSY

No therapeutic intervention is universally accepted, and the most effective management to restore motion and diminish pain in patients with shoulder stiffness has yet to be defined.

GROWING POINTS

The rate of failure after treatment for stiff shoulder is higher in the surgical group than in the conservative group.

AREAS TIMELY FOR DEVELOPING RESEARCH

There is insufficient evidence to establish whether surgical or conservative management is the best choice to manage shoulder stiffness. Prospective, randomized studies are needed to establish whether surgical or conservative management produce a clinically relevant difference in functional outcome.

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.

CT arthrography of adhesive capsulitis of the shoulder: Are MR signs applicable?

OBJECTIVE

To determine if diagnostic signs of adhesive capsulitis (AC) of the shoulder at Magnetic Resonance Imaging (MRI) and arthrography (MRA) are applicable to CT arthrography (CTA).

METHODS

22 shoulder CTAs with AC were retrospectively reviewed for features described in MR literature. The control group was composed of 83 shoulder CTA divided into four subgroups 1) normal (N = 20), 2) omarthrosis (N = 19), 3) labral injury (N = 23), and 4) rotator cuff tear (N = 21). Two musculoskeletal radiologists assessed the rotator interval (RI) for obliteration, increased width and thickening of coracohumeral ligament (CHL). The width and capsule thickness of the axillary recess were measured.

RESULTS

The width of the axillary recess was significantly decreased in the AC group (4.6 ± 2.6 mm versus 9.9 ± 4.6 mm, p ≤ 0.0001; sensitivity and specificity of 84% and 80%). Thickness of the medial and lateral walls of the axillary capsule was significantly increased in the AC group (5.9 ± 1.3 mm versus 3.7 ± 1.1 mm, p ≤ 0.0001 and 5.7 ± 1 mm versus 3.5 ± 1.3 mm, p ≤ 0.0001, respectively). CHL thickness was significantly increased in the AC group (4.1 ± 1 mm (p ≤ 0.001)) in comparison to others groups. Obliteration of the RI was statistically significantly more frequent in patients with AC (72.7% (16/22) vs. 12% (10/83), p < 0.0001). Width of the RI did not differ significantly between patients and controls (p ≥ 0.428).

CONCLUSION

Decreased axillary width, and thickened axillary capsule are MR signs of AC applicable to CTA. Evaluation of rotator interval seems useful and reproducible only for obliteration.

Adhesive capsulitis of the shoulder: review of pathophysiology and current clinical treatments

Adhesive shoulder capsulitis, or arthrofibrosis, describes a pathological process in which the body forms excessive scar tissue or adhesions across the glenohumeral joint, leading to pain, stiffness and dysfunction. It is a debilitating condition that can occur spontaneously (primary or idiopathic adhesive capsulitis) or following shoulder surgery or trauma (secondary adhesive capsulitis). Here, we review the pathophysiology of adhesive shoulder capsulitis, highlighting its clinical presentation, natural history, risk factors, pathoanatomy and pathogenesis. Both current non-operative and operative treatments for adhesive capsulitis are described, and evidence-based studies are presented in support for or against each corresponding treatment. Finally, the review also provides an update on the gene expression profile of adhesive capsulitis and how this new understanding can help facilitate development of novel pharmacological therapies.

Continuous passive motion in adhesive capsulitis patients with diabetes mellitus: A randomized controlled trial

BACKGROUND

The aim of this study was to clarify the effects of continuous passive motion (CPM) treatment on adhesive capsulitis (AC) in diabetes mellitus (DM) patients.

METHODS

Forty-one DM patients with AC were randomized to two treatment groups. The first group (n= 20) (CPM group) received CPM treatments; the second group (n= 21) had conventional physical therapy (CPT group), including active stretching, range of motion (ROM) and pendulum exercises. All patients received electrotherapy. After a four-week-long physical therapy program, the patients were instructed to continue with an eight-week home exercise program. The patients rated the pain they felt at night, both while at rest and in motion, in the past week using the visual analogue scale (VAS). Functional outcome evaluations were performed using the Constant Shoulder Score (CSS) and Shoulder Pain and Disability Index (SPADI). All patients were evaluated at baseline, and during the fourth and twelfth weeks of the study.

RESULTS

There were significant improvements in both groups' active and passive ROM for the shoulder, VAS measures, SPADI pain and disability scores and CSS, and excluding the active and passive internal and external rotation of shoulder increased with both treatment methods (CPM or CPT) over time (p< 0.001), however these differences were found to be prominent in patients receiving CPM therapy.

CONCLUSIONS

Both the CPM and CPT therapies seemed to be beneficial for the treatment of AC in DM patients, however CPM revealed more distinctive improvements in the function and pain levels of the AC patients.

Range of motion of diabetic frozen shoulder recovers to the contralateral level

Objective

To determine whether frozen shoulder heals equally well in patients with and without diabetes and whether dependency on insulin affects the outcome.

Methods

We retrospectively examined 178 patients with idiopathic frozen shoulder; 27 patients had diabetes. We evaluated range of motion, pain, and functional results. The mean follow-up was 9.7 years (SD, 7.1 years).

Results

In the presence of frozen shoulder, range of motion did not differ between patients with and without diabetes. At follow-up, range of motion in all directions of both the affected and unaffected shoulders of patients with diabetes was inferior to that of patients without diabetes. Among patients with diabetes, range of motion of the once-frozen shoulder reached the level of the unaffected shoulder. Patients with and without diabetes experienced similar pain except during exertion. The Constant–Murley score was not significantly different between the two groups, and insulin dependency did not lead to worse outcomes.

Conclusion

Frozen shoulder heals well in patients with diabetes.

Rotator Cuff Lesions in Patients with Stiff Shoulders: A Prospective Analysis of 379 Shoulders

BACKGROUND

Idiopathic adhesive capsulitis is defined as a frozen shoulder with severe and global range-of-motion loss of unknown etiology. The purpose of our study was to clarify the prevalence of rotator cuff lesions according to patterns and severity of range-of-motion loss in a large cohort of patients with stiff shoulders.

METHODS

Rotator cuff pathology was prospectively investigated with use of magnetic resonance imaging (MRI) or ultrasonography in a series of 379 stiff shoulders; patients with traumatic etiology, diabetes, or radiographic abnormalities were excluded. Eighty-nine shoulders demonstrated severe and global loss of passive motion (≤100° of forward flexion, ≤10° of external rotation with the arm at the side, and internal rotation not more cephalad than the L5 level) and were classified as having severe and global loss of motion (Group 1). The remaining 290 shoulders were divided into two groups: those with severe but not global loss (Group 2; 111 shoulders) and mild to moderate limitation (Group 3; 179 shoulders).

RESULTS

Among all shoulders, imaging demonstrated an intact rotator cuff in 51%, a full-thickness tear in 35%, and a partial-thickness tear in 15%. In Group 1, 91% had an intact rotator cuff and 9% had a partial-thickness rotator cuff tear. No patient in this group demonstrated a full-thickness tear. In Group 2 and Group 3, respectively, 44% and 35% of the shoulders were intact, 17% and 16% had a partial-thickness tear, and 39% and 50% had a full-thickness tear.

CONCLUSIONS

Shoulder stiffness with severe and global loss of passive range of motion is not associated with full-thickness rotator cuff tears, although some patients may have a partial-thickness tear. Shoulders with severe and global loss of range of motion at a first visit are likely to be cases of idiopathic adhesive capsulitis and may not require further imaging studies.

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.

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.

Shoulder muscle function in frozen shoulder syndrome patients following manipulation under anesthesia: a 6-month follow-up study

INTRODUCTION

The present study evaluates changes in shoulder muscle function in patients with frozen shoulder syndrome (FSS) following manipulation under general anesthesia (MUA).

PATIENTS AND METHODS

Fifteen FSS patients with mean (±SD) age of 53.6±9.7 years were included in this study. Isometric endurance of the shoulder muscles was characterized by time and net impulse (NI), which were assessed with the patient holding a weight in the hand until exhaustion. Fatigability of the deltoid and trapezius muscles during isometric endurance test was assessed by electromyogram power spectrum median frequency (MF) slope per minute. Patients were also screened for daytime pain. Data were collected before MUA, and at 1 and 6 months postoperatively.

RESULTS

Six months postoperatively, the MF slope for the trapezius and deltoid muscles of the involved and uninvolved shoulders did not differ (P>0.05), whereas NI remained lower and endurance time was longer (P<0.05). Shoulder pain was reduced as compared to preoperative levels (on visual analog scale) 1 and 6 months postoperatively (P<0.05).

DISCUSSION

In patients with FSS, the fastest improvements in shoulder muscle NI, fatigability and pain take place in the first month after MUA; 6 months after MUA, however, NI and endurance time remained impaired for the involved shoulder. Physiotherapy should pay more attention to muscle function recovery.

LEVEL OF EVIDENCE

Level III, prospective follow-up study.

Adhesive capsulitis: review of imaging and treatment

Adhesive capsulitis is one of the most common conditions affecting the shoulder; however, early clinical diagnosis can be challenging. Treatment is most effective when commenced prior to the onset of capsular thickening and contracture; consequently, the role of imaging is increasing. The aim of this review is to demonstrate the typical imaging appearances of adhesive capsulitis and to examine some of the evidence regarding each of these imaging modalities. An evaluation of the various management options available to the clinician is also presented.

Effects of whole-body cryotherapy in the management of adhesive capsulitis of the shoulder

OBJECTIVE

To compare 2 different treatment approaches, physical therapy modalities, and joint mobilization versus whole-body cryotherapy (WBC) combined with physical therapy modalities and joint mobilization, for symptoms of adhesive capsulitis (AC) of the shoulder.

DESIGN

A randomized trial.

SETTING

Hospital.

PARTICIPANTS

Patients with AC of the shoulder (N=30).

INTERVENTION

Patients were randomly assigned to 2 groups. The WBC group received physical therapy modalities, passive joint mobilization of the shoulder, and WBC, whereas the non-WBC group received only physical therapy modalities and passive joint mobilization of the shoulder.

MAIN OUTCOME MEASURES

Visual analog scale (VAS), active range of motion (ROM) of flexion, abduction, internal and external rotation of the shoulder, and the American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form (ASES) were measured before and after the intervention.

RESULTS

A statistically significant difference between groups was found for the VAS, active ROM of flexion, abduction, internal rotation, and external rotation, and the ASES with greater improvements in the WBC group (Ps<.01). Overall, both groups showed a significant improvement in all outcome measures and ROM measures from pre to post at a level of P<.01.

CONCLUSIONS

There is significant improvement with the addition of WBC to treatment interventions in this sample of patients.

Acromioclavicular joint pain in patients with adhesive capsulitis: a prospective outcome study

Diagnosis of adhesive capsulitis is a clinical diagnosis based on history and physical examination. Afflicted patients exhibit active and passive loss of motion in all planes and a positive capsular stretch sign. The effect of adhesive capsulitis on acromioclavicular biomechanics leading to tenderness has not been documented in the literature. This study reports on the incidence of acromioclavicular tenderness in the presence of adhesive capsulitis. Furthermore, we note the natural history of such acromioclavicular joint pain in relation to that of adhesive capsulitis. Over a 2-year period (2005-2007), 84 patients undergoing initial evaluation for adhesive capsulitis were prospectively examined with the use of validated outcome measures and physical examination. Acromioclavicular joint tenderness results were compared and analyzed on initial evaluation and final follow-up of at least 1 year. Forty-eight patients (57%) with adhesive capsulitis had acromioclavicular joint pain on examination. At final follow-up, as range of motion improved, a significant increase in American Shoulder and Elbow Surgeons/Penn shoulder score and decrease in number of patients with acromioclavicular pain was noted with only 6 patients with residual pain (P<.05). In the presence of adhesive capsulitis, there is not only compensatory scapulothoracic motion but also acromioclavicular motion. This often results in transient symptoms at the acromioclavicular joint, which abate as the frozen shoulder resolves and glenohumeral motion improves. This is important to recognize to avoid unnecessary invasive treatment of the acromioclavicular joint when the patient presents with adhesive capsulitis.

Early arthroscopic release in stiff shoulder

Purpose:

To evaluate the results of early arthroscopic release in the patients of stiff shoulder

Methods:

Twenty patients of stiff shoulder, who had symptoms for at least three months and failed to improve with steroid injections and physical therapy of 6 weeks duration, underwent arthroscopic release. The average time between onset of symptoms and the time of surgery was 4 months and 2 weeks. The functional outcome was evaluated using ASES and Constant and Murley scoring systems.

Results:

All the patients showed significant improvement in the range of motion and relief of pain by end of three months following the procedure. At 12 months, mean improvement in ASES score is 38 points and Constant and Murley score is 4O.5 points. All patients returned to work by 3-5 months (average -4.5 months).

Conclusion:

Early arthroscopic release showed promising results with reliable increase in range of motion, early relief of symptoms and consequent early return to work. So it is highly recommended in properly selected patients.

Level of evidence:

Level IV

Predictors of outcome after nonoperative and operative treatment of adhesive capsulitis

BACKGROUND

Few studies regarding adhesive capsulitis have concurrently evaluated nonoperative and operative treatment.

PURPOSE

The objectives were to evaluate the efficacy of operative and nonoperative treatment of adhesive capsulitis and to determine predictors of clinical outcome.

STUDY DESIGN

Cohort study; Level of evidence, 3.

METHODS

At minimum 24 months' follow-up, 85 patients underwent self-assessment using the Simple Shoulder Test (SST) and American Shoulder and Elbow Surgeons (ASES) score, including 24 patients treated operatively.

RESULTS

Mean number of yes responses on the SST improved from 4.0 ± 2.7 at initial presentation to 9.9 ± 2.8 at final follow-up (P < .0001). Patients who received nonoperative treatment and patients who underwent surgery demonstrated similar improvements on the SST. For the entire cohort, forward elevation and external rotation at the side improved from 119° ± 20° to 152° ± 15° and from 29° ± 18° to 46° ± 11° (P < .0001), respectively, between initial presentation and discharge from treatment. Internal rotation to the back improved from the gluteal area to the thoracolumbar junction (P < .0001). Improvements in forward elevation and external rotation were greater for patients undergoing surgery. After nonoperative treatment, patients with diabetes had a lower final SST than patients without diabetes (P < .05). For the entire cohort, initial SST predicted final SST (P < .05), and a shorter duration of symptoms predicted a higher final ASES score (P < .05). Younger patients (P < .001) and those with a lower initial SST (P < .05) were more likely to undergo surgery.

CONCLUSIONS

A multimodal nonoperative treatment program is effective for most patients with adhesive capsulitis. Patients who do not improve, including those with diabetes, respond well to manipulation and arthroscopic release. Residual motion deficits at discharge from treatment do not appear to affect longer-term clinical outcome.

Arthroscopic capsular release for refractory shoulder stiffness: a critical analysis of effectiveness in specific etiologies

HYPOTHESIS

The purpose of this study is to report and compare the outcome of arthroscopic capsular release in patients with shoulder stiffness with post-traumatic, postsurgical, and idiopathic etiologies. We hypothesize that patients with idiopathic or post-traumatic stiffness have better outcomes after arthroscopic capsular release than those with shoulder stiffness with a postsurgical etiology.

MATERIALS AND METHODS

A retrospective review of 115 patients who underwent arthroscopic capsular release for refractory shoulder stiffness was performed. There were 60 men and 55 women with a mean age of 49 years (range, 27 to 81 years). The patients were divided into 3 groups according to the etiology of stiffness: post-traumatic (26 patients), postsurgical (48 patients), and idiopathic (41 patients). Arthroscopic capsular release was performed in all patients after a mean of 9 months of physical therapy (range, 6 to 13 months).

RESULTS

At a mean follow-up of 46 months (range, 25 to 89 months), the overall subjective shoulder value in all groups improved from 29% to 73% and the age- and gender-adjusted Constant score improved from 35% to 86%. The mean pain score decreased from 7.5 to 1, and mean active forward flexion, external rotation, and internal rotation increased from 97 degrees , 14 degrees , and the L5 vertebral level, respectively, to 135 degrees , 38 degrees , and the T11 vertebral level, respectively (P < .0001). There was no significant difference between the outcomes of idiopathic and post-traumatic stiffness (P = .7). However, the Constant score and subjective shoulder value were significantly lower in the postsurgical group compared with the idiopathic and post-traumatic groups (P = .0001 and P = .006, respectively).

CONCLUSIONS

Arthroscopic capsular release is an effective treatment for refractory shoulder stiffness. Patients with idiopathic and post-traumatic shoulder stiffness have better outcomes than patients with postsurgical stiffness.

Comparison of arthroscopic capsular release in diabetic and idiopathic frozen shoulder patients

INTRODUCTION

The clinical results of arthroscopic capsular release for frozen shoulder in diabetic (group 1) and idiopathic (group 2) patients were compared. Surgery was performed on 28 shoulders of 26 patients (24 women, 2 men) with frozen shoulder unresponsive to conservative treatment. The mean age was 50 (range 40-65). A total of 14 patients were included in group 1, and 12 were in group 2. The average duration of complaints was 10 and 7 months in groups 1 and 2, respectively. The evaluation of shoulder functions was made according to the University of California, Los Angeles (UCLA) and Constant Scoring Systems. Duration of complete pain relief and for regaining range of motion (ROM) after surgery were also noted in their final follow-up examination.

RESULTS

The mean follow-up period was 48.5 and 60.2 months in group 1 and group 2, respectively. There was no significant difference between the two groups in terms of the postoperative duration of complete pain relief and that for regaining ROM (P > 0.05). The duration of complete pain relief was 2.6 and 2.5 months, and regaining of ROM was 1.6 and 1.5 months for groups 1 and 2, respectively. The postoperative UCLA and Constant scores had significant increases in both groups compared to the preoperative ones (P < 0.05). There was a significant difference between the groups in terms of Constant scores (P < 0.05) while there was no difference in terms of UCLA scores (P > 0.05). There was a statistically significant difference in shoulder abduction and internal rotation degrees between the groups (P < 0.05).

CONCLUSION

The results of arthroscopic capsular release for frozen shoulder in diabetic patients had less good results in terms of range of motion and Constant-Score. There was no significant difference between the two groups in terms of the duration of pain relief and that of regaining the ROM.

Manipulation or intra-articular steroids in the management of adhesive capsulitis of the shoulder? A prospective randomized trial

BACKGROUND

The management of adhesive capsulitis (frozen shoulder) is controversial. The authors present a prospective randomized study comparing the outcome, at a two-year follow-up period, of two groups of patients treated either by manipulation of the shoulder under anaesthetic or by intra-articular shoulder injections using steroid with distension.

METHODS

Fifty-three patients suffering from Idiopathic "Primary" Frozen Shoulder were prospectively randomized into two treatment groups and followed up for two years from the start of treatment. Patients were assessed using the Constant score, a Visual Analogue Score, and the SF36 questionnaire.

RESULTS

No statistical differences were found between the two groups of patients with regards to the outcome measures.

CONCLUSION

Treatment using steroid injections with distension as an out-patient is therefore recommended for the treatment of Idiopathic "Primary" Frozen Shoulder. This has the same clinical outcome as a manipulation under anaesthetic with less attendant risks.

Frozen shoulder: evidence and a proposed model guiding rehabilitation

Frozen shoulder or adhesive capsulitis describes the common shoulder condition characterized by painful and limited active and passive range of motion. The etiology of frozen shoulder remains unclear; however, patients typically demonstrate a characteristic history, clinical presentation, and recovery. A classification schema is described, in which primary frozen shoulder and idiopathic adhesive capsulitis are considered identical and not associated with a systemic condition or history of injury. Secondary frozen shoulder is defined by 3 subcategories: systemic, extrinsic, and intrinsic. We also propose another classification system based on the patient's irritability level (low, moderate, and high), that we believe is helpful when making clinical decisions regarding rehabilitation intervention. Nonoperative interventions include patient education, modalities, stretching exercises, joint mobilization, and corticosteroid injections. Glenohumeral intra-articular corticosteroid injections, exercise, and joint mobilization all result in improved short- and long-term outcomes. However, there is strong evidence that glenohumeral intra-articular corticosteroid injections have a significantly greater 4- to 6-week beneficial effect compared to other forms of treatment. A rehabilitation model based on evidence and intervention strategies matched with irritability levels is proposed. Exercise and manual techniques are progressed as the patient's irritability reduces. Response to treatment is based on significant pain relief, improved satisfaction, and return of functional motion. Patients who do not respond or worsen should be referred for an intra-articular corticosteroid injection. Patients who have recalcitrant symptoms and disabling pain may respond to either standard or translational manipulation under anesthesia or arthroscopic release.

LEVEL OF EVIDENCE

Level 5.

Magnetic resonance arthrographic findings of presumed stage-2 adhesive capsulitis: focus on combined rotator cuff pathology

The purpose of this study was to report the magnetic resonance arthrography (MRA) findings of patients considered to have stage-2 idiopathic adhesive capsulitis and to identify differences in rotator cuff pathologies between 2 age groups (ie, =or< and >60 years). Eighty-one patients, considered to have stage-2 idiopathic adhesive capsulitis based on medical history and a physical examination underwent MRA. Magnetic resonance evaluations focused on combined pathologies other than adhesive capsulitis, especially on the supraspinatus tendon. The pathologies of supraspinatus tendon were divided into 4 categories: normal, tendinosis, partial-tears, and full-thickness tears. Mean patient age was 66 years and mean symptom duration was 8.9 months. There were 38 men and 43 women. Overall, 50 patients (61.7%) showed some form of supraspinatus tendon pathology [small full-thickness tears 6 (7.4%), partial-thickness tears 25 (30.9%), and supraspinatus tendon tendinosis 19 (23.5%)]. The most common MRA finding, other than rotator cuff pathology, was the impression of adhesive capsulitis in 58 patients (71.6%). Group 2 (>60 years) showed a higher prevalence of full and partial-thickness tears (P<.05), however the overall prevalence of supraspinatus tendon pathologies were similar in those younger than and older than 60 years (P=.1795). Approximately 1/3 of stage-2 adhesive capsulitis patients showed some form of supraspinatus tendon tear by MRA, and <10% of patients who were considered to have idiopathic adhesive capsulitis had a full-thickness tear. Adhesive capsulitis patients older than 60 years appeared to be more likely to have a supraspinatus tendon tear.

Dynamic movement of the long head of the biceps tendon in frozen shoulders

PURPOSE

To assess the importance of the dynamic movement of the long head of the biceps (LHB) tendon for treatment of frozen shoulder.

METHODS

87 consecutive patients (with 88 frozen shoulders) aged 36 to 77 (mean, 54) years underwent arthroscopic capsular release by a single surgeon. Preoperative treatments included rehabilitation, steroid and/or hyaluronic acid injections. The inclusion criteria were severe night pain, no improvement of flexion and external rotation, and poor response to rehabilitation for at least 6 months. Shoulders were divided into 3 types; types A/B/C indicate slight/moderate/severe degree of synovitis and adhesion of the LHB tendon to the rotator interval. 23 shoulders were type A, 26 type B, and 39 type C. 18 of the 39 type-C shoulders were controls with release of the capsule alone but not the LHB tendon. Patients were followed up for a mean of 21 (range, 12-35) months. Changes in the American Shoulder and Elbow Surgeons (ASES) score, range of movement, and muscle strength (flexion and external rotation) among types A, B, C, and controls were compared.

RESULTS

The severity of the adhesion of the LHB tendon to the rotator interval was associated with the ASES score. In all adhesion types, muscle strength and the range of movement in flexion, external rotation, and internal rotation improved postoperatively.

CONCLUSIONS

Arthroscopic capsular release for adhesion of the LHB tendon to the rotator interval improves the sliding movement and thereby shoulder function.

Alterations in scapular kinematics in subjects with idiopathic loss of shoulder range of motion

STUDY DESIGN

Prospective cohort study.

OBJECTIVE

To determine the effect of idiopathic loss of shoulder range of motion on scapular kinematics.

BACKGROUND

Subjects with idiopathic loss of shoulder range of motion have difficulty performing activities of daily living. Previous investigations have focused on the glenohumeral component of shoulder complex motion.

MATERIALS AND METHODS

Seventeen unilaterally impaired and 17 nonimpaired subjects. The 3-dimensional motion of the humerus, scapula, and trunk were measured withthe Fastrak electromagnetic motion-tracking system during humerus-to-trunk scapular plane elevation. An analysis of variance compared the impaired subjects noninvolved to the nonimpaired subjects' scapulae at 4 scapularplane elevation positions. A repeated-measures analysis of variance compared the impaired subjects' involved and noninvolved scapulae at 3 scapular plane elevation positions, and matched-pairs t test compared peak elevation values.

RESULTS

The between-group ANOVAs demonstrated no difference in anterior tipping, internal rotation, or upward rotation. The repeated-measures ANOVAs demonstrated no difference in anterior tipping or internal rotation and a position-by-side interaction in upward rotation. The involved-side scapulae were more upwardly rotated (7.7 degrees) at peak humerus-to-trunk scapular plane elevation.

DISCUSSION AND CONCLUSION

The impaired subjects' noninvolved scapular kinematics were not significantly different than the nonimpaired subjects, but were significantly different than their involved scapulae. The upward rotation differences may be a substitution pattern used to accomplish functional elevation.

[Arthroscopic treatment of capsular shoulder stiffness.]

The shoulder capsular sitffness must be managed first by a physiotherapist and the arthroscopic release is indicated after failure. The clinical assessment is essential and reveals the loss of passive motion in specified direction. The x-rays and imaging are necessary for excluding the other etiologies of shoulder stiffness. The arthroscopic treatment is part of he treatment strategy which has to be explained to the patient. The arthroscopic treatment starts by measuring under anesthesia the loss of passive motion. The next step consists of the release of the rotator interval followed by resection of the anterior capsule. Finally, the posterior capsule is cut according to the location of the capsular retraction. The interest of the subacromial debridement is still of debate. The postoperative pain control and the rehabilitation are part of the treatment. The literature analysis demonstrates the efficiency of the arthroscopic treatment, even if the post-op care are often long. A delay of 6 months is currently necessary to obtain the final results. The main advantages of the arthroscopic treatment is to address specifically the retracted capsule and to perform a selective release which allow to start rehabilitation program early.

Upper extremity: emphasis on frozen shoulder

Adhesive capsulitis, or frozen shoulder syndrome, is a condition characterized by gradual loss of active and passive glenohumeral motion. The etiology of adhesive capsulitis is unknown. Treatment methods include supervised benign neglect, physical therapy, intra-articular corticosteroid injections, closed manipulation under anesthesia, arthroscopic capsular release, and open surgical release. Approximately 70% of patients presenting with adhesive capsulitis are women; however, the role of sex in the etiology, development, and outcome of treatment for adhesive capsulitis remains unclear. Individualized treatment is necessary following thorough evaluation of patient symptoms and stage of the disease.

An evaluation of the effects of the extent of capsular release and of postoperative therapy on the temporal outcomes of adhesive capsulitis

PURPOSE

To evaluate effects of the extent of surgical release and of postoperative physiotherapy on the outcomes of this procedure.

TYPE OF STUDY

Case-controlled cohort study.

METHODS

Pain and range of motion scores were compared preoperatively, operatively, and at 1, 6, 12, 24, 52, and 104 weeks postoperatively, in 2 temporal cohorts of patients with adhesive capsulitis. The first cohort (n = 18) underwent a 155 degrees +/- 40 degrees (mean +/- SEM) standard anteroinferior arthroscopic capsule release of the shoulder (ACR-S) and rehabilitation. The second cohort (n = 22) underwent capsular release that was extended an additional 65 degrees +/- 65 degrees posteriorly, a portion of the intra-articular part of the subscapularis tendon was divided, and the patients had a modified earlier, supervised postoperative physical therapy program (ACR-M).

RESULTS

In both cohorts, there was a significant reduction in pain 1 week after surgery, which was maintained at all time-points (P < .05). More gains in intraoperative range of forward flexion (121 degrees v 150 degrees), abduction (114 degrees v 146 degrees) and external rotation (55 degrees v 68 degrees) were obtained in the ACR-M cohort (P < .001). Six weeks after surgery, external and internal rotation regressed to preoperative levels in the ACR-S cohort; 2 of them required a re-release. This regression was not observed in the ACR-M cohort. There was no instability or weakness in lift-off power in either cohort.

CONCLUSIONS

This is a level IV study of 2 nonrandomized cohorts where simultaneous changes in surgical technique and rehabilitation were introduced to the ACR-M cohort. Arthroscopic capsular release for adhesive capsulitis resulted in significant reductions in pain by 1 week in both cohorts. A more extensive capsular release with division of the intra-articular portion of subscapularis improved intraoperative motion. Gains in internal and external rotation were lost postoperatively in the ACR-S cohort, but were preserved when an extended surgical release and an early, supervised postoperative physical therapy program was initiated in the ACR-M cohort.

LEVEL OF EVIDENCE

Level IV.

Adhesive capsulitis: sonographic changes in the rotator cuff interval with arthroscopic correlation

OBJECTIVE

To evaluate the sonographic findings of the rotator interval in patients with clinical evidence of adhesive capsulitis immediately prior to arthroscopy.

DESIGN AND PATIENTS

We prospectively compared 30 patients with clinically diagnosed adhesive capsulitis (20 females, 10 males, mean age 50 years) with a control population of 10 normal volunteers and 100 patients with a clinical suspicion of rotator cuff tears. Grey-scale and colour Doppler sonography of the rotator interval were used.

RESULTS

Twenty-six patients (87%) demonstrated hypoechoic echotexture and increased vascularity within the rotator interval, all of whom had had symptoms for less than 1 year. Three patients had hypoechoic echotexture but no increase in vascularity, and one patient had a normal sonographic appearance. All patients were shown to have fibrovascular inflammatory soft-tissue changes in the rotator interval at arthroscopy commensurate with adhesive capsulitis. None of the volunteers or the patients with a clinical diagnosis of rotator cuff tear showed such changes.

CONCLUSIONS

Sonography can provide an early accurate diagnosis of adhesive capsulitis by assessing the rotator interval for hypoechoic vascular soft tissue.

Trapezius muscle imbalance in individuals suffering from frozen shoulder syndrome

This aim of this study was to characterize upper and lower trapezius muscle activity for patients experiencing frozen shoulder syndrome (FSS) compared to asymptomatic subjects. Fifteen patients suffering from unilateral FSS and 15 asymptomatic subjects voluntarily participated in this study. Data were gathered on electromyographic (EMG) activity obtained from the upper and lower trapezius muscles during maximal static arm elevations at six different testing positions: 60 and 120 degrees of flexion, abduction in the frontal plane, and abduction in the scapular plane. The group with FSS revealed increased upper trapezius EMG activity at the 60 degrees (mean difference = 12%, p < 0.003) and 120 degrees (mean difference = 24%, p < 0.004) testing positions, and increased lower trapezius EMG activity at the 120 degrees testing positions (mean difference = 6%, p < 0.002), compared to asymptomatic subjects. Higher ratios of the upper trapezius to lower trapezius EMG activity were also found in the patient group (p < 0.0005) compared to asymptomatic subjects. The results of this study indicate that the increased trapezius muscle activity may contribute to scapular substitution movement in compensation for impaired glenohumeral motion in patients with FSS. The insufficiency of the increased lower trapezius muscle activity should be an important consideration in the rehabilitation of patients experiencing FSS.

Intraarticular lesions in primary frozen shoulder after manipulation under general anesthesia

The aim of this study was to find intraarticular lesions after manipulation under general anesthesia in patients with primary frozen shoulder. In a prospective trial conducted between 2001 and 2003 in 30 patients with primary frozen shoulder, the affected shoulders were manipulated while the patients were under general anesthetia. Exclusion criteria were secondary stiffness caused by rotator cuff tears and glenohumeral arthritis. After manipulation, each patient was examined by arthroscopy, and any intraarticular lesions were documented. In all patients, during manipulation, a significant improvement in the range of motion was achieved. Under anesthesia, flexion improved on average from 70 degrees +/- 33 degrees to 180 degrees +/- 15 degrees, abduction from 50 degrees +/- 20 degrees to 170 degrees +/- 25 degrees, and external rotation from -5 degrees +/- 10 degrees to +40 degrees +/- 20 degrees. Arthroscopy revealed hemarthrosis in all patients after manipulation. In 22 patients, localized synovitis was detected in the area of the rotator interval, whereas in 8 patients, disseminated synovitis was observed as a feature of adhesive capsulitis. After manipulation, the capsule was seen to be ruptured superiorly in 11 patients, the anterior capsule was ruptured up to the infraglenoid pole in 24 patients, and 16 patients each had a capsular lesion located posteriorly. In 18 patients no additional joint damage was found after manipulation. In 4 patients, iatrogenic superior labrum anterior-posterior lesions were observed. Further injuries detected were 3 fresh partial tears of the subscapularis tendon, 4 anterior labral detachments (1 with a small osteochondral defect), and 2 tears of the middle glenohumeral ligament. Even though manipulation under anesthesia is effective in terms of joint mobilization, the method can cause iatrogenic intraarticular damage.

Early and long-term results of arthroscopic treatment for shoulder stiffness

We evaluated the efficacy of arthroscopic treatment in 42 patients with shoulder stiffness. Of 44 stiff shoulders, 30 were classified as primary idiopathic, 7 were classified as traumatic, 4 occurred after prolonged immobilization, and 3 occurred in diabetic patients. Similar intraarticular findings were made in all cases. Bursoscopy suggested subacromial impingement in one third of the patients; they underwent not only capsular release but also subacromial decompression. Gains in motion and the Japanese Orthopaedic Association score were statistically significant at 4 weeks after operation and at a mean follow-up of 7.5 years. The results at the latest follow-up were excellent in 37 shoulders (84%), good in 3 (7%), and poor in 4 (9%). Of the 4 poor results, 2 were in patients with traumatic injury, 1 in a diabetic patient, and 1 in a primary idiopathic patient. There were no complications related to the arthroscopic procedure. Our treatment combines fast recovery with long-term efficacy.

Operative management of the frozen shoulder in patients with diabetes

Forty-three patients with diabetes (47 shoulders) who had a manipulation under anesthesia only (24 shoulders), a manipulation under anesthesia followed by an arthroscopy (12 shoulders), or an arthroscopic release (11 shoulders) for a frozen shoulder were followed-up for a mean period of 35 months. The mean Constant score improved from 20.3 to 63.7 points (P <.001). The mean improvement in forward flexion was 71.7 degrees, in abduction 78.5 degrees, in external rotation with the arm at the side 36.3 degrees, and in internal rotation from the buttock to the first lumbar vertebra (P <.001 for all). When gentle manipulation with the patient under anesthesia was possible, the outcome was satisfactory in 13 of 15 shoulders (86.7%) in patients with non-insulin-dependent diabetes and in 17 of 21 shoulders (81%) in patients with insulin-dependent diabetes (P >.5). Insulin-dependent patients with diabetes were more likely to require an arthroscopic release than patients with non-insulin-dependent diabetes (P <.05). Most of our patients obtained their maximum relief of pain and functional recovery within 3 months of surgery. We recommend manipulation under anesthesia for the resistant frozen shoulder in patients with diabetes. Arthroscopic release is required when mobilization under anesthesia is not possible.