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Introduction: De Quervain's tendinopathy affects the region of the wrist and the hand. Thumb motion becomes painful. This illness is caused by a degenerative process rather than inflammation. Primary treatment methods are splinting, taking non-steroid anti-inflammatory drugs and different physical therapeutic modalities, administration of a steroid injection into the tendon sheath or surgical release of the tendon sheath may be performed. Aim: The aim of the present study was to investigate whether conservative treatment complemented by eccentric training could provide an adequate alternative to the currently accepted treatment options. Method: The eccentric training lasted for 8 weeks (if necessary for 12 weeks). Following the introduction to exercises, patients (n = 9) repeated the training several times a day, which was controlled during weekly meetings. At the 1st, 8th and 12th meetings, inspection and the following measurements were performed: range of motion, muscle strength, evaluation and number of painful regions including the completion of patient questionnaires. Data were analysed with paired samples t-tests and repeated measures ANOVA. IBM SPSS Statistics 25.0 and Microsoft Office Excel Professional Plus 2016 programs were used. Results were regarded significant at level of p<0.05. Results: Significant improvements were found in the intensity of pain (Numeric Pain Rating Scale p = 0.005, n = 9) and in the functionality of the hand and wrist (Quick Disabilities of the Arm, Shoulder and Hand questionnaire part 1. p<0.001, part 2. p<0.001, Patient-Rated Wrist Evaluation questionnaire p<0.001; n = 9). Conclusion: With careful patient selection, conservative treatment complemented by eccentric training could be an alternative to current treatment options. Orv Hetil. 2020; 161(11): 419-424.

Introduction: Osteoid osteoma is a rare benign bone tumor displaying typical clinical symptoms and radiological signs in most cases. Characteristic symptoms are nocturnal pain alleviated by non-steroid antiinflammatory drugs. Radiological findings are also characteristic, the central osteolytic 'nidus' is surrounded by reactive sclerosis. These lesions are rare in the hand, typical symptoms may be absent, furthermore, atypical symptoms may occur. Characteristic radiographic signs may also be missing. Therefore, diagnosis may prove difficult. In the case of radiological/clinical suspicion, HRCT (high-resolution CT) is recommended. Aim: Our aim is to summarize the pathophysiology, occurrence and clinical features of these lesions and also the difficulties that accompany diagnosis on the hand. Treatment options will also be discussed. Method: Retrospective analysis was performed at Semmelweis University, Department of Orthopedics, between March 2014 and December 2018. Inclusion criteria were: patients who had undergone treatment for osteoid osteoma during this period. Data from the 6 patients who have undergone open surgery for osteoid osteoma of the hand will be presented as case reports. Results: During this period, a total of 112 patients were treated for osteoid osteoma at our Department, 8 lesions were found on the hand (7%). Among the cases presenting on the hand, typical nocturnal pain was absent in 3 cases, and in 1 case the pain did not respond to non-steroid antiinflammatory drugs. Open surgery and curettage was performed in 6 cases with good results. Conclusion: Osteoid osteoma on the hand is rare, typical symptoms may be missing, and atypical symptoms may occur. Radiographic findings may be nondescript, HRCT is recommended in the case of clinical suspicion. Performing radiofrequency ablation for osteoid osteoma of the hand may pose difficulties, curettage is the gold standard of treatment. Curettage alleviates symptoms well. Orv Hetil. 2020; 161(7): 263-268.