The Experts below are selected from a list of 10368 Experts worldwide ranked by ideXlab platform
Susan E Mackinnon - One of the best experts on this subject based on the ideXlab platform.
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direct radial to Ulnar Nerve transfer to restore intrinsic muscle function in combined proximal median and Ulnar Nerve injury case report and surgical technique
Journal of Hand Surgery (European Volume), 2014Co-Authors: Benjamin Z Phillips, Susan E Mackinnon, Michael J Franco, Andrew Yee, Thomas H Tung, Ida K FoxAbstract:A distal median to Ulnar Nerve transfer for timely restoration of critical intrinsic muscle function is possible in isolated Ulnar Nerve injuries but not for combined Ulnar and median Nerve injuries. We used a distal Nerve transfer to restore Ulnar intrinsic function in the case of a proximal combined median and Ulnar Nerve injury. Transfer of the nonessential radial Nerve branches to the abductor pollicis longus, extensor pollicis brevis, and extensor indicis proprius to the motor branch of the Ulnar Nerve was performed in a direct end-to-end fashion via an interosseous tunnel. This method safely and effectively restored intrinsic function before terminal muscle degeneration.
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distal median to Ulnar Nerve transfers to restore Ulnar motor and sensory function within the hand technical nuances
Neurosurgery, 2009Co-Authors: Justin Brown, Andrew Yee, Susan E MackinnonAbstract:Ulnar Nerve INJURIES can be severely debilitating and result in weakness of wrist flexion, loss of hand intrinsic function, and Ulnar-sided hand anesthesia. When these injuries produce a Sunderland fourth- or fifth-degree injury, surgical intervention is necessary for functional recovery. Traditional methods for restoring hand intrinsic function after Ulnar Nerve palsy include interposition Nerve grafting for timely presentations or tendon transfers for either complex injuries or late presentations. Distal median to Ulnar Nerve transfer to restore Ulnar intrinsic Nerve muscle function was first performed in 1991. We continue to find it advantageous for recovery of Ulnar intrinsic function in patients with proximal Ulnar Nerve injuries by significantly reducing denervation time and directing motor fibers into this critical motor distribution. Several case reports have been published discussing the concept behind this approach, but none have outlined the specific steps involved in this operation. As such, this article discusses our operative methodology behind the distal median to Ulnar neurotization, which includes a Guyon canal release, identification of donor median and recipient Ulnar Nerve fascicular anatomy within the forearm, and an operative tutorial on proper technique for neurotization to restore both Ulnar motor and sensory function. We present the technical nuances of the following Nerve transfers to restore Ulnar Nerve function within the hand: anterior interosseous Nerve to deep motor branch of Ulnar Nerve, third webspace sensory contribution of median Nerve to volar sensory component of Ulnar Nerve, and end-to-side reinnervation of Ulnar dorsal cutaneous to the remaining median sensory trunk.
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distal anterior interosseous Nerve transfer to the deep motor branch of the Ulnar Nerve for reconstruction of high Ulnar Nerve injuries
Journal of Reconstructive Microsurgery, 2002Co-Authors: Christine B Novak, Susan E MackinnonAbstract:: Proximal Ulnar Nerve injuries can result in loss of intrinsic muscle function of the hand, and distal Nerve transfers provide Nerve coaptation close to the target muscle. This retrospective chart review evaluated patient outcome following a distal Nerve transfer of the anterior interosseous Nerve (AIN) to the deep motor branch of the Ulnar Nerve. There were eight patient charts reviewed, three women, and five men. The mean patient age was 38 years (standard deviation: 22 years). The mean time from injury to surgery was 3 months (standard deviation: 3 months), and mean postoperative follow-up time was 18 months (standard deviation: 11 months). All patients had reinnervation of the Ulnar Nerve intrinsic hand muscles with improved postoperative lateral pinch and grip strength. One patient had a secondary tendon transfer. No functional deficit in performing tasks in pronation was reported. The distal Nerve transfer of the AIN to the deep motor branch of the Ulnar Nerve provides good reinnervation of the Ulnar-Nerve-innervated intrinsic muscles of the hand.
Matthew L. Iorio - One of the best experts on this subject based on the ideXlab platform.
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reversed palmaris longus muscle causing volar forearm pain and Ulnar Nerve paresthesia
Journal of Hand Surgery (European Volume), 2017Co-Authors: Abhiram R. Bhashyam, Carl M Harper, Matthew L. IorioAbstract:A case of volar forearm pain associated with Ulnar Nerve paresthesia caused by a reversed palmaris longus muscle is described. The patient, an otherwise healthy 46-year-old male laborer, presented after a previous unsuccessful forearm fasciotomy for complaints of exercise exacerbated pain affecting the volar forearm associated with paresthesia in the Ulnar Nerve distribution. A second decompressive fasciotomy was performed revealing an anomalous "reversed" palmaris longus, with the muscle belly located distally. Resection of the anomalous muscle was performed with full relief of pain and sensory symptoms.
Poongtaek Kim - One of the best experts on this subject based on the ideXlab platform.
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tardy Ulnar Nerve palsy in cubitus varus deformity associated with Ulnar Nerve dislocation in adults
Journal of Shoulder and Elbow Surgery, 2006Co-Authors: Inho Jeon, Heesoo Kyung, Ilhyung Park, Poongtaek KimAbstract:Seven patients with tardy Ulnar Nerve palsy from a posttraumatic cubitus varus deformity were reviewed retrospectively. The severity of symptoms was grade I in 3 patients and grade II in 4 patients according to McGowan's classification. The mean internal rotation angle was 30.7° (range, 25°-45°). The most prominent feature was dislocation of the Nerve anterior to the medial epicondyle and entrapment of the Nerve by the fibrous band of the flexor carpi Ulnaris muscle. Of these 7 patients, 4 were treated by 3-dimensional osteotomy with Ulnar Nerve transposition, and 3 were treated by anterior transposition of the Ulnar Nerve. All patients improved clinically, and there was no significant difference between anterior transposition of the Nerve in the group with osteotomy and the group without osteotomy. Ulnar Nerve instability due to internal rotation deformity and distal entrapment was considered to be the main cause of neuropathy.
J H Stone - One of the best experts on this subject based on the ideXlab platform.
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Ulnar Nerve compression at the elbow caused by a prominent medial head of the triceps and an anconeus epitrochlearis muscle
Journal of Hand Surgery (European Volume), 1996Co-Authors: J J Ohara, J H StoneAbstract:A number of musculo-tendinous variations around the medial epicondyle have been alleged to cause Ulnar Nerve compression. Subluxation of the Ulnar Nerve, a “snapping” separate medial head of triceps, a prominent medial head of triceps covering the Ulnar Nerve, anconeus epitrochlearis, Osborne's band, and the ligament of Struthers have been implicated. We present a case of clearcut compression of the Ulnar Nerve at two levels just at and posterior to the epicondyle by a tightly applied prominent head of the triceps, and at a more distal level beneath an anconeus epitrochlearis muscle.
Ida K Fox - One of the best experts on this subject based on the ideXlab platform.
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direct radial to Ulnar Nerve transfer to restore intrinsic muscle function in combined proximal median and Ulnar Nerve injury case report and surgical technique
Journal of Hand Surgery (European Volume), 2014Co-Authors: Benjamin Z Phillips, Susan E Mackinnon, Michael J Franco, Andrew Yee, Thomas H Tung, Ida K FoxAbstract:A distal median to Ulnar Nerve transfer for timely restoration of critical intrinsic muscle function is possible in isolated Ulnar Nerve injuries but not for combined Ulnar and median Nerve injuries. We used a distal Nerve transfer to restore Ulnar intrinsic function in the case of a proximal combined median and Ulnar Nerve injury. Transfer of the nonessential radial Nerve branches to the abductor pollicis longus, extensor pollicis brevis, and extensor indicis proprius to the motor branch of the Ulnar Nerve was performed in a direct end-to-end fashion via an interosseous tunnel. This method safely and effectively restored intrinsic function before terminal muscle degeneration.
