Pieter Bas de Witte

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In a prospective randomised study we compared the results of arthroscopic subacromial bursectomy alone with debridement of the subacromial bursa followed by acromioplasty. A total of 57 patients with a mean age of 47 years (31 to 60) suffering from primary subacromial impingement without a rupture of the rotator cuff who had failed previous conservative(More)
BACKGROUND The Western Ontario rotator cuff index (WORC) is an increasingly applied condition-specific outcome measure for rotator cuff (RC) conditions. However, in most WORC validation studies, only a limited number of psychometric properties are studied in indistinct patient groups. PURPOSE To assess psychometric properties of the WORC according to the(More)
BACKGROUND Calcific tendinitis of the rotator cuff (RCCT) is frequently diagnosed in patients with shoulder pain, but there is no consensus on its treatment. PURPOSE To compare 2 regularly applied RCCT treatments: ultrasound (US)-guided needling and lavage (barbotage) combined with a US-guided corticosteroid injection in the subacromial bursa (subacromial(More)
BACKGROUND This study addressed risk factors for surgical site infection in patients who had undergone orthopaedic oncology surgical procedures. METHODS We retrospectively reviewed data on 1521 orthopaedic oncologic surgical procedures in 1304 patients. We assessed patient demographics, updated Charlson comorbidity index, surgery-specific data, and(More)
PURPOSE This study tests the hypothesis that the results of release of elbow stiffness related to heterotopic ossification (HO) are comparable whether there is partial or complete restriction (ankylosis) of flexion and extension. METHODS Eighteen patients who had surgical release of complete bony ankylosis between the humerus and ulna were retrospectively(More)
BACKGROUND AND PURPOSE Shoulder function may be changed after healing of a nonoperatively treated clavicular fracture, especially in cases of clavicular shortening or mal-union. We investigated scapular orientations and functional outcome in healed clavicular fractures with and without clavicular shortening. PATIENTS AND METHODS 32 participants with a(More)
Knowledge on the epidemiology and long-term course of rotator cuff calcific tendinitis (RCCT) is scarce. We assessed demographics, radiological characteristics, and their association with long-term outcomes in a large patient group. Baseline demographics, radiological characteristics and treatment were recorded in 342 patients. Interobserver agreement of(More)
BACKGROUND The subacromial impingement syndrome (SIS) is the most common diagnosed disorder of the shoulder in primary health care, but its aetiology is unclear. Conservative treatment regimes focus at reduction of subacromial inflammatory reactions or pathologic scapulohumeral motion patterns (intrinsic aetiology). Long-lasting symptoms are often treated(More)
The incidence of (a)symptomatic rotator cuff tears is high, but etiologic mechanisms are unclear and treatment outcomes vary. A practical tool providing objective outcome measures and insight into etiology and potential patient subgroups is desirable. Symptomatic cuff tears coincide with humerus cranialization. Adductor co-activation during active arm(More)
Over a 6-year-period, 15 women and 11 men with a mean age of 53 years (range, 24 to 80 years) had resection of the distal part of the ulna (Darrach's procedure) to address stiffness, instability, non-union, or substantial radioulnar length discrepancy after trauma. At an average follow-up of 21 months (range, 4 to 60 months), the improvement in total arc of(More)