Tennis elbow (lateral epicondylitis or lateral elbow tendinopathy) is a self-limiting condition in most patients. Surgery is often offered to patients who fail to improve with conservative treatment. However, there is no evidence to support the superiority of surgery over continued nonoperative care or no treatment. New evidence also suggests that the prognosis of tennis elbow is not influenced by the duration of symptoms, and that there is a 50% probability of recovery every three to four months. This finding challenges the belief that failed nonoperative care is an indication for surgery. In this annotation, we discuss the clinical and research implications of the benign clinical course of tennis elbow. Cite this article: Bone Joint J 2023;105-B(2):109–111

Objectives. Local corticosteroid infiltration is a common practice of treatment for lateral epicondylitis. In recent studies no statistically significant or clinically relevant results in favour of corticosteroid injections were found. The injection of autologous blood has been reported to be effective for both intermediate and long-term outcomes. It is hypothesised that blood contains growth factors, which induce the healing cascade. Methods. A total of 60 patients were included in this prospective randomised study: 30 patients received 2 ml autologous blood drawn from contralateral upper limb vein + 1 ml 0.5% bupivacaine, and 30 patients received 2 ml local corticosteroid + 1 ml 0.5% bupivacaine at the lateral epicondyle. Outcome was measured using a pain score and Nirschl staging of lateral epicondylitis. Follow-up was continued for total of six months, with assessment at one week, four weeks, 12 weeks and six months. Results. The corticosteroid injection group showed a statistically significant decrease in pain compared with autologous blood injection group in both visual analogue scale (VAS) and Nirschl stage at one week (both p < 0.001) and at four weeks (p = 0.002 and p = 0.018, respectively). At the 12-week and six-month follow-up, autologous blood injection group showed statistically significant decrease in pain compared with corticosteroid injection group (12 weeks: VAS p = 0.013 and Nirschl stage p = 0.018; six months: VAS p = 0.006 and Nirschl p = 0.006). At the six-month final follow-up, a total of 14 patients (47%) in the corticosteroid injection group and 27 patients (90%) in autologous blood injection group were completely relieved of pain. Conclusions. Autologous blood injection is efficient compared with corticosteroid injection, with less side-effects and minimum recurrence rate

Many procedures have been described for the operative treatment of tennis elbow (lateral epicondylitis). Arthroscopic tennis elbow release is a relatively recent development. The aim of this study was to review our early results of arthroscopic tennis elbow release. This was a prospective study of 29 consecutive patients (30 elbows) with tennis elbow refractory to conservative management, who underwent arthroscopic tennis elbow release performed by one surgeon. At surgery, arthroscopic assessment of the elbow joint was performed followed by capsulectomy and debridement of the Extensor Carpi Radialis Brevis (ECRB) tendon origin using the proximal lateral, anteromedial and anterolateral portals. Associated intra-articular pathology was noted. The ECRB lesions were classified according to their gross morphology and resected with a shaver but the insertion site was not decorticated. Patients were assessed preoperatively, at 2 weeks and at 3 months using the DASH score. 29 patients with tennis elbow were treated with arthroscopic release of the ECRB origin on the lateral epicondyle. Of the 30 elbows undergoing surgery, 22 were noted to have a Nirschl type I lesion (intact capsule), 7 had a type II lesion (linear capsular tear) and 1 had a type 3 lesion (capsular rent). Degenerative articular changes were noted in 18 elbows. Arthroscopic debridement was undertaken if appropriate. Three elbows had eccentric radial heads. Radial plicae which were impinging on the radial head were present in three patients. Mean follow up is 9 months (1–23). 1 patient was lost to follow up. There was a significant improvement in DASH scores (p< 0.05) at 2 weeks post operatively. This improvement became more significant at 3 months post operatively. This is a worst case scenario analysis using a paired t test. 6 patients failed to improve, 1 partially improved and 1 was revised and improved. There were no surgical complications; however, one patient has post operative stiffness which required an arthroscopic release. The early results of this study would suggest arthroscopic tennis elbow release is an effective treatment for tennis elbow, which in addition also allows assessment of the elbow joint and the potential to address associated intra-articular pathology if required. This minimally invasive technique has been demonstrated to be safe and affords early post operative rehabilitation and return to normal activities

Purpose: It is known from previous studies that reduced grip strength is associated with tennis elbow; however; assessment of muscular strength over other parts of upper limb, particularly wrist and shoulder, has received a little or no attention in the literature. To address possible other upper extremity muscular strength weakness-imbalances in Tennis Elbow, this study aimed to investigate the strength of various upper limb muscle groups in tennis elbow patients and compare them with those of healthy subjects. Methods: A total of 32 participants were assigned into two groups of Control (N=16) and Tennis Elbow (N=16). In both groups, upper limb maximal isometric muscular of dominant and non-dominant sides was measured at various joints including metacarpophalan-geal (extension & flexion), wrist extension & flexion), grip, and shoulder (internal and external rotation and abduction) using appropriate either commercial or purpose-built dynamometers. Muscular strength and important strength ratios were analyzed and compared in each group (dominant vs non-dominant) and also between Control and Tennis Elbow group using various statistical methods. Results: Significant dominance difference was found in all strength measurements for Control group but not for Tennis Elbow group indicating a generalized and widespread upper limb muscular weakness associated with tennis elbow. In addition, significant differences were found not only for various hand strength measurements but also for shoulder strength between Control and Tennis Elbow groups (p < 0.05). Conclusion: This is the most comprehensive study of upper limb isometric muscular strength assessment in Tennis Elbow during recent years. Distributed upper limb muscle strength weakness exists in Tennis Elbow which needs to be addressed within both preventative and treatment strategies

Many procedures have been described for the operative treatment of tennis elbow (lateral epicondylitis). Arthroscopic release is a relatively recent development. The aim of this study was to review our early results of arthroscopic tennis elbow release. This was a prospective study of 28 consecutive patients with tennis elbow refractory to conservative management, who underwent arthroscopic tennis elbow release performed by one surgeon. At surgery, arthroscopic joint assessment was performed followed by capsulectomy and debridement of the Extensor Carpi Radialis Brevis (ECRB) tendon origin using the proximal lateral and medial portals. The ECRB lesions were classified and resected with a shaver but the insertion site was not decorticated. Patients were assessed preoperatively, at 2 weeks and 3 months using the DASH score. Of the 28 elbows 21 were noted to have a Nirschl type I lesion (intact capsule), 6 had a type II lesion (linear capsular tear) and 1 a type III (capsular rent). Degenerative articular changes were noted in 19 elbows. If arthroscopic debridement was required it was undertaken. Three elbows were noted to have eccentric radial heads. Radial plicae which were impinging on the radial head were noted in three patients. 1 patient was lost to follow up. There was a significant improvement in DASH scores (p< 0.002) at 2 weeks post operatively. This improvement was sustained at 3 months. This is a worst case scenario analysis using a paired t test. 1 patient had post operative stiffness and 6 failed to improve of which 2 were revisions. The early results would suggest arthroscopic tennis elbow release is an effective treatment for tennis elbow, which in addition also allows assessment of the elbow joint and the potential to address associated intra-articular pathology. This minimally invasive technique has been demonstrated to be safe and affords early post operative rehabilitation

This study describes percutaneous method of tennis elbow release and medium term results. Materials and Methods: Eighteen patients (20 elbows) were reviewed following percutaneous tennis elbow release. All patients in this series underwent non-operative management with limited or no relief prior to surgery. The mean duration of treatment was 34.04 months prior to surgery. A percutaneous release of common extensor origin was performed under local anaesthetic. A small 1 cm skin incision was employed in all cases. Mean follow- up was 73 months with a range of 8–121 months. All patients except returned to work and normal level of activity. There was one poor result. The mean time to return to work was 5 weeks, with a range of 1 day –12 weeks. Thirteen patients (fifteen elbows) have been clinically examined. Five patients were contacted by phone. Results: Pain after surgery was evaluated with a visual analogue scale. Eighteen elbows (90% of cases) had an excellent result. Pain was rated at zero in seventeen cases. One case rated at zero at rest and two after heavy activity. One elbow (5%) had a good result with pain at zero at rest and raising four on the visual analogue scale after sporting activities (playing tennis for more than one hour). There was no improvement in one case (5%) with a visual analogue score of eight before and after surgery. There were no complications recorded. These results prove that percutaneous elbow release is a viable option in treatment of failed conservative tennis elbow management though astringent selection criteria should be observed

Aim: Description of and Prospective analysis of long-term outcomes of arthroscopic tennis elbow release. Materials and Methods: 70 patients (72 elbows) with lateral epicondylitis, recalcitrant to a minimum of 6 months of supervised conservative management, underwent arthroscopic lateral epicondylar release. Each patient was clinically evaluated pre operatively and post-operatively and a quantitative assessment of the grip strength was collected on both sides with a dynamometer, in full elbow extension and in 90 degrees flexion. Functional assessment with the Mayo Elbow Performance Score and dynamometer grip strengths were collected for the first two years post-operation. Results: Postoperative follow-up averaged 36 months (range 24–45months). The average MEPS increased from 57/100 to 89/100. 66 patients were graded as excellent outcomes, and 4 patients were noted to have fair outcomes. The latter 4 patients were assessed to have type 2 failure, with two subsequently requiring PIN releases, one requiring an osteochondroma excision from the distal laeral humerus, and one patient lost to follow-up. Dynamometr strength returned to above pre-operative level at an average of 3 months and were and average of 35% greater than the pre-operative level at final review. Complications consisted of synovial fistulae (n=8) all of which spontaneously resolved within one month, 2 portal superficial infections, 1 mild anterior capsular contracture, and no neurovascular injuries. Concurrent intra-articular pathology that was noted included radio-capitellar chondrosis (n=22), lateral trochlear chondrosis (n=20), anterolateral synovial plicae (n=17), synovitis (n=13), radial head instability (n=3), and synovial osteochondromatosis (n=1). Conclusion: Arthroscopic tennis elbow release is a valid technique for the treatment of recalcitrant lateral epicondylitis

Introduction: Different surgical options are available for the treatment of Tennis Elbow. One of the most simple is percutaneous lateral release. Patients and methods: This prospective study consists of 24 patients; who had persistent symptoms of tennis elbow for an average of 21 months before being operated. All patients received conservative treatment before surgery; only those who did not improve were surgically treated. All of them had percutaneous lateral release of the common extensor tendon under local anaesthetic as a day case. Results: Patients returned to work after an average of four weeks. Pain relief was achieved at an average of eight weeks. Patient satisfaction was 91.6%. The clinical results were evaluated according to pain relief, level of activity and patient satisfaction. The results were good in 22 patients, fair in 1 and poor in 1. Conclusion: We believe that percutaneous release should be offered at an earlier stage for patients who failed conservative treatment. It is a simple, reliable and cost effective surgical procedure

Tennis elbow (lateral epicondylitis) is a common upper limb condition, possibly resulting from angiofibroblastic degeneration. Conservative treatment comprises corticosteroid injections, rest and splints, however, occasionally surgery is necessary. Recent data comparing Botulinum Toxin Type A (BTX-A) (Botox®, Allergan Inc, Irvine, CA) with surgery suggested BTX-A is effective in treating resistant tennis elbow by providing temporary, reversible paralysis of affected muscle, thereby alleviating tensile forces and allowing tissue healing. This double-blind, randomised, controlled trial compared BTX-A with placebo in 40 patients with chronic tennis elbow (> 6 months). Recruited patients were randomised to 50U BTX-A+2mL normal saline or 2mL normal saline (placebo). Injections were administered 5cm distal to the maximal area of lateral epicondyle tenderness. Quality of life (SF-12), pain (visual analogue scale) and grip strength (Jamar dynamometer) were assessed pre- and 3 months post-injection in both affected and non-affected arms. Following BTX-A treatment patients had average 19% improvement in grip strength in the affected arm compared to average 2% for placebo, however, this difference did not reach statistical significance (p=0.08, 95% CI −2.31, 35.64). No difference between the groups was seen for the unaffected arm (BTX-A 4% improvement, placebo 1% improvement). Both groups showed similar improvements in pain assessment and also in quality of life. BTX-A treated-patients demonstrated improved grip strength in the affected arm compared to placebo, however this difference was not statistically significant

Introduction: Tennis Elbow affects 2% of the general population. 90% respond well to conservative management. Different surgical options are available for the treatment of recalcitrant Tennis Elbow. One of the most simple is percutaneous lateral release. Methods: Prospective analysis of 31 patients, who failed a trial of conservative treatment, and underwent a lateral release of the common extensor origin under local anaesthetic as a day case. The symptoms had been present for an average of 21 months. Patients were scored for pain, activity and satisfaction. Results: Pain relief was achieved in 90.3%, patient satisfaction in 90.3% and a return to full activity in 93.5%. The results were good in 28, fair in 2 and poor in 1. Return to work was on average after 4 weeks. Conclusion: It is a simple, safe and effective procedure. It should be offered at an earlier stage, in those who failed conservative treatment. If all other procedures are equally effective, it is logical to choose the simplest

Summary Statement. Applying appropriate upper limb regional-specific and joint-specific tools along with suitable psychologic tools provides an effective assessment of supportive, interventional, and treatment strategies in TE. Background. Tennis elbow (TE) is a painful pathologic condition with its origin in the common wrist extensor muscles at the lateral epicondyle. As the second most frequently diagnosed musculoskeletal disorder in the neck and upper limb in a primary care setting, with an annual incidence of 4 to 7 cases per 1000 patients in general practice (with a peak at 35 to 54 yrs of age), TE has considerable socioeconomic costs. As pain relief and improvement in functional performance are the 2 common aims of all treatment strategies, the importance of using appropriate tools for the assessment of pain and functional disability in TE is evident. In view of the high prevalence of TE, uncertainties about its treatment, and its substantial socioeconomic consequences, using more specific, patient-centred assessment tools is essential for providing more useful information on the level of pain and functional disability in TE. The Study aimed to: 1) compare pain and functional disability in tennis elbow (TE) patients with healthy controls; and 2) evaluate the relationship between the 2 major psychologic factors (anxiety and depression) and TE. Methods. Sixteen consecutive TE patients were recruited at an upper limb clinic: inclusion criteria were lateral epicondyle tenderness, pain with resisted wrist and middle finger extension and at least 3 months localised lateral elbow pain. Sixteen healthy controls with no upper limb problem were recruited from students and staff. Participants were given 4 questionnaires, together with instructions for completion: Disabilities of the Arm, Shoulder, and Hand, Patient-Rated Forearm Evaluation Questionnaire, Patient-Rated Wrist Evaluation Questionnaire, and Hospital Anxiety and Depression Scale. The independent t test was used to compare the total and subscale scores between the groups. Results. Significantly higher scores were found in TE for pain and function subscales and also total score for Disabilities of the Arm, Shoulder, and Hand, Patient-Rated Forearm Evaluation Questionnaire, and Patient-Rated Wrist Evaluation Questionnaire. For Hospital Anxiety and Depression Scale, both anxiety and depression subscales (P<0.001) and the total score (P<0.01) were significantly higher in TE. According to the anxiety and depression subscales, 55% and 36% of patients, respectively, were classified as probable cases (score >11). Discussion. TE patients showed markedly increased pain and functional disability. Significantly elevated levels of depression and anxiety pointed out the importance of psychologic assessment in TE patients. In the development of supportive and treatment strategies, we suggest the combination of “upper limb” and “psychologic” assessment tools

We propose a grading system for contrast free MRI images of tennis elbow and evaluate the inter and intra observer variability of their interpretation. Methods: Three senior orthopaedic surgeons were asked to blindly grade 0.2T dedicated extremity contrast free MRI images of elbows of patients who presented with varying degrees of symptomatic tennis elbow. Our proposed grading system of 1 to 5 based on the pattern around the common extensor tendon was used. Images of the symptomatic and contralateral non symptomatic elbows were graded blindly twice with an interval of 1 month by each surgeon. Each surgeon graded 176 MRI images twice. The grades were subsequently grouped into (I) grades 1 to 2 and (II) grades 3 to 5. Results: With regards to the intra observer agreement, consultant A showed 90.1% agreement, consultant B showed 90.6% agreement and consultant C 96.0% agreement. The mean intra observer agreement rate was 92.2%. The inter observer agreement between consultant A and B was 82.46%, between A and C 67.1% and between B and C 80.1%. It was also noted that there were systematic differences to the inter observer variability. Consultant A graded the images 3 to 5 on both occasions 52.9% of the time, consultant B graded 3 to 5 on both occasions 37.8% of the time and consultant C graded 3 to 5 on both occasions 23.3% of the time. Conclusion: The intra observer agreement rate is high. There is however a greater inter observer variation but this variation is consistent. We suggest that the inter observer differences can be improved by (1) reducing the grades to positive or negative and (2) by group reeducation of the observers

The aim of this study was to evaluate the analgesic effect of extracorporeal shock wave lithotripsy (ESWL) in patients with refractory tennis elbow, golfer’s elbow and plantar fasciitis. Patients with tennis elbow (34), golfer’s elbow (11) and plantar fasciitis lesions (14) who had not responded to a minimum of six months’ conservative treatment were included in this three-year study of ESWL. Patients who were pregnant or had neurological problems, coagulation disorder and tumour in the area of treatment were excluded. Patients received 2 000 shock waves of 0.04 to 0.12 mj/mnf three times at monthly intervals. Patients were followed up for a minimum of six months and maximum of 36 months. The effectiveness of ESWL was assessed in terms of improvement in duration and severity of pain, functional disability, complication of treatment and recurrence. Good or excellent results were achieved in 67.65% of patients with tennis elbow, 45.45% with golfer’s elbow and 71.42% with plantar fasciitis. ESWL seems a useful treatment option, as effective administered monthly as weekly. Its effectiveness in cases of golfer’s elbow in questionable

Failure of conservative treatment for tennis elbow is an indication for surgical decompression. The Topaz® technique utilises radiofrequency to decompress(detension) the tendon and in addition, it is thought to stimulate angiogenesis thereby facilitating healing. Initially we reviewed the three month follow up of 25 tennis elbow decompressions performed using the Topaz® technique. The case notes were reviewed and findings recorded on a structured proforma. After a minimum of 1 year we re-reviewed the case notes to identify recurrences or patients requiring revision surgery. The majority of patients were aged between 35–50 years. 87% of patients had symptoms for more than 12 months and symptoms experienced were mainly pain (100%). All patients had a full trial of physiotherapy and had minimum of two steroid injections. At three month follow up symptoms were completely relieved or improved in 88%. All patients were given an open appointment to review if symptoms recurred. On review of the notes after a minimum of one year, 84% had no further clinic attendances. Four elbows re-attended with symptom recurrence, two underwent traditional open release and two declined revision surgery. In the two patients who declined further surgery, symptoms had resolved at one year. The results of the Topaz® technique are comparable to that of the results of the traditional release from the literature both in terms of success and problems. It would be important to compare it to the traditional release to gauge its benefits against the standard practice

Objective: The main objective of our study was to compare the outcome and complications between open and percutaneous tennis elbow release using the Total Elbow Scoring System (TESS). Our null hypothesis is that there is no difference in patient based outcome measures and morbidity between both groups. Methods: We evaluated a cohort of 40 patients (41 elbows) with clinical evidence of tennis elbow that had surgery after failed conservative treatment. All patients were followed up for a minimum of 12 months and information entered into a structured questionnaire. Other outcomes measures assessed include; Visual Analogue Score (VAS), length of time to return to work, and wound complications. Results: Seventeen (17) and Twenty-four (24) elbows were managed by percutaneous release and open surgery respectively. There were twenty-one female patients (22 elbows) and nineteen male patients (19 elbows). The mean age of the study population was 45years (s.d.: 8.4yrs). The mean duration of symptoms before surgery was 20 months (s.d.: 9.1mths). All 17 elbows that had percutaneous release procedures had a TESS score greater than 80, in comparison to 19 out of 24 elbows with open procedures, although this was not quite significant. (p=0.06). A score of between 80 and 100 is considered good or excellent. Patients that had open surgery had a significantly higher pain (Visual analogue score) VAS in comparison to closed procedures (p=0.01). A significantly higher proportion of patients that had percutaneous procedures were able to return to work within 2 weeks in comparison to open procedures (p-=0.03). There were 4 cases of wound complication that occurred only in patients with open surgery. Conclusion: We conclude that percutaneous release for tennis elbow can produce satisfactory outcomes, with lower morbidity and earlier return to work compared with open procedures

Aims of the Study: To compare the outcome of percutaneous release and formal open release for tennis elbow. Material and Methods: We conducted a prospective randomised controlled trial. 45 patients (total of 47 elbows) underwent either a formal open release or a percutaneous tenotomy (24 open, 23 percutaneous). All patients had pre-operative assessment by the DASH (Disability of the Arm, Shoulder and Hand) scoring system. The surgery was performed by 1 surgeon (BN Muddu). Both groups were followed up for a minimum of 12 months and re-assessed using the DASH scores, time for return to work and patient satisfaction. Statistical analysis using Mann-Whitney and repeated measures ANOVA were performed. Results: The groups were similar in respect of demographic and pre-test variables. Statistical analyses using Mann-Whitney showed significant differences for patient satisfaction (p=0.012), time to return to work (p=0.0001), improvements in DASH Score (p=0.002) and improvement in sporting activities (p=0.046). There was a trend to improvement in work related activity. Repeated measures ANOVA comparing the pre-operative data for each group were also significant for standardized DASH scores (p=0.0082) and sporting activities (p=0.043). Discussion/Conclusion: Our study has shown that there is a significant difference in outcome in the two patient groups. Those patients undergoing a percutaneous release returned to work on average 3 weeks earlier and their symptoms as shown from their DASH scores improved significantly more than those undergoing an open procedure. The percutaneous procedure is a quicker, simpler procedure to perform than an open procedure. Our study has shown that patients have significantly better outcome measures after a percutaneous procedure

Aim: To assess the outcome of open release of the common extensor origin in the management of tennis elbow after the failure of non operative treatment methods. Methods: 18 patients (24 elbows) between the age group of 38 to 59 who underwent open release of the common extensor origin by the same team after a mean waiting time of 23 months from the onset of pain and a trial of failed non operative methods like analgesics/nsaids, physiotherapy, local steroid injections were contacted and asked to score the effectiveness of surgery after a gap of six months. Since the predominant troubling symptom for all patients was pain they were asked to score the pain relief correlating with the surgery. Results: In 15 patients (83%) excellent pain relief (defined as an 8 or more out of 10 improvement) was achieved and they regained normal use of the limb. One patient (5%) had moderate improvement (score between 6 and 7 out of 10) and two further (11%) patients gained minimal benefit with persistent symptoms (score 5 out of 10). None of the patients suffered deterioration as a result of surgery. Conclusion: This study proves that despite new advances in the treatment of tennis elbow, release of the extensor origin by the open method which is a simple and economical day case procedure, still remains an excellent option in cases where trial of non operative management has failed

The aim of this study was to review the effectiveness of percutaneous release of the common extensor origin for tennis elbow. The operative technique is similar to that previously reported by Hohmann in 1949. There were 29 patients (31 elbows) that underwent the procedure between 1991 and 1998. There were 14 males and 15 females; 19 were right handed, and 17 had the dominant arm involved. The mean age was 51.8 years (range 34–65); the mean duration of symptoms was 21.7 months (range 8–60 months). All patients had a minimum of 12 months of conservative treatment including NSAIDs, splinting, physical therapy and local anaesthetic and steroid injections (2–6 injections). All operations were performed as day case procedures, with the majority (25) done under local anaesthetic. 24 patients were independently reviewed using Hospital for Special Surgery Elbow Assessment and a questionnaire. Grip strength measurements were performed using JAMAR Dynanometer and the level of patient satisfaction was recorded. 5 patients could not attend the special review clinics. They were contacted over the phone and necessary data recorded. The mean follow up was 45.2 months (range 8–88 months). 24 patients scored above 70 points and were very satisfied, 6 patients were considered failures as their symptoms warranted formal open release operation; only two reported an improvement following the open releases, with the remainder still symptomatic at the last follow up. An overall success rate of 81% was recorded. Complications were rare - one patient who had bruising of forearm after the procedure. In conclusion this procedure can be recommened as an efficacious first line of surgical treatment, with advantages of being safe, quick to perform and with minimal morbidity

Aims: Primary aim of this study was to evaluate the inßuence of simultaneous local anesthesia on the clinical outcome after repetitive low-energy extracorpreal shock wave therapy (ESWT) for chronic tennis elbow. Methods: 51 patients were treated in a randomized single-blind international multicenter trial with a parallel-group design and blinded independent observer to evaluate low-energy ESWT with local anesthesia versus placebo ESWT with local anesthesia for patients with a chronic tennis elbow at three-month follow-up. 85% of patients of the verum group did not achieve good/ excellent results in the Roles & Maudsley score, they were offered once again application of the identical active treatment concept, this time without local anesthesia. 80% of the patients of the placebo group did not achieve good/excellent results, they were offered crossover therapy, i.e. identical active treatment with local anesthesia. Results: Reception of active therapy without local anesthesia resulted in excellent or good outcomes in 80% of patients of the original verum group at three-month follow-up, while application of active therapy with local anesthesia lead to good outcomes in 27% of the original placebo group (p= 0.0092, power= 0.8). Conclusions: Local anesthesia has a negative inßuence on the clinical outcome after repetitive low-energy ESWT for chronic tennis elbow

Introduction and Aims: To compare the outcome of percutaneous release and fonnal open release for tennis elbow. Method: We conducted a prospective randomised controlled trial. 45 patients (total of 47 elbows) underwent either a formal open release or a percutaneous tenotomy (24 open, 23 percutaneous). All patients had pre-operative assessment by the DASH (Disability of the Arm, Shoulder and Hand) scoring system. The surgery was performed by one surgeon (BN Muddu). Both groups were followed up for a minimum of 12 months and re-assessed using the DASH scores, time for return to work and patient satisfaction. Statistical analysis using Mann-Whitney and repeated measures ANOV A were performed. Results: The groups were similar in respect of demographic and pre-test variables. Statistical analyses using Mann-Whitney showed significant differences for patient satisfaction (p=O.OI2), time to return to work (p=O.OOOI), improvements in DASH Score (p=O. OO2) and improvement in sporting activities (p=O. O46). There was a trend to improvement in eight in work related activity. Repeated measures ANOV A comparing the pre-operative data for each group were also significant for standardised DASH scores (p=O. OO82) and sporting activities (p=O.O43). Conclusion: Our study has shown that there is a significant difference in outcome in the two patient groups. Those patients undergoing a percutaneous release returned to work on average three weeks earlier and their symptoms as shown from their DASH scores improved significantly more than those undergoing an open procedure. The percutaneous procedure is a quicker, simpler procedure to perform than an open procedure. Our study has shown that patients have significantly better outcome measures after a percutaneous procedure