Single T4 PSs on the medial and lateral sides failed at 4.0 +/- 1.4 Nm (group 1M) and 6.1 +/- 2.5 Nm (group 1L), respectively. Bilaterally-linked T5 screws failed at 11.9 +/- 3.1 Nm (group 2). Unilaterally linked T6-T9 PS constructs on the medial and lateral sides failed at 21.2 +/- 7.5 Nm (group 3M) and 17.9 +/- 11.1 Nm (group 3L), respectively. Quadrangularly-linked PSs failed at 42.5 +/- 14.5 Nm (group 4). CONCLUSION.: A near linear increase in relative torque applied before failure was found with each additional PS linked. Linked constructs allow for significantly greater torque with less risk of PS breach of the spinal canal.
We investigated the difficulty of surgical fasciectomy after previous treatment with clostridial collagenase injection. The 35 clinicians who had participated in the initial trials of this injection were contacted via email. Twenty-eight responded, nine of whom reported on 15 patients. Most (seven of nine) felt there was no significant distortion of anatomy and rated the level of technical difficulty as equivalent to a primary Dupuytren's fasciectomy at the observed degree of contracture (nine of 15 cases). One respondent (four of 15 cases) reported significantly more difficulty and grossly distorted anatomy. One surgical complication, a wound dehiscence, was reported.
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