Palmar mid-carpal instability: My management algorithm

Palmar mid-carpal instability: My management algorithm

398 Congrès annuel de la Société fran¸caise de chirurgie de la main / Chirurgie de la main 34 (2015) 332–398 acceptable restoration of fractures as ...

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398

Congrès annuel de la Société fran¸caise de chirurgie de la main / Chirurgie de la main 34 (2015) 332–398

acceptable restoration of fractures as well as assessment and management of soft tissue lesions in high demand athletes. Disclosure of interest ting interest.

The author has not supplied his declaration of compe-

http://dx.doi.org/10.1016/j.main.2015.10.191 DC09

Arthroscopically assisted mini-invasive management of perilunate dislocations and fracture–dislocations Bo Liu Beijing, China E-mail address: [email protected] Purpose The purpose of this study was to evaluate the outcomes of perilunate dislocations and fracture-dislocations treated with arthroscopically assisted mini-invasive reduction and fixation. Methods Between June 2012 and May 2014, 24 patients who had a dorsal perilunate dislocation or fracture–dislocation were treated with arthroscopically assisted reduction and percutaneous fixation. The mean follow-up was 14.8 months (range, 6–32 months). Clinical outcomes were evaluated on the basis of range of motion; grip strength; Mayo wrist score; Quick Disabilities of the Arm, Shoulder and Hand questionnaire; and Patient-Rated Wrist Evaluation score. Radiographic evaluations included time to scaphoid union, carpal alignments, and any development of arthritis. Results The range of flexion–extension motion of injured wrist averaged 86% of the values for contralateral wrist. The grip strength of the injured wrist averaged 83% of the values for the contralateral wrists. The mean Quick Disabilities of the Arm, Shoulder and Hand score was 6, and the mean Patient-Rated Wrist Evaluation score was 10. According to the Mayo wrist scores, overall functional outcomes were rated as excellent in 13 patients (54%), good in 6 (25%), fair in 4 (17%), and poor in 1 (4%). Scaphoid nonunion developed in 1 patient. Reduction obtained during the operation was maintained within normal ranges in all patients. Arthritis had not developed in any patient at final follow-up. Conclusions Arthroscopically assisted mini-invasive reduction with percutaneous fixation is a reliable and favorable alternative in the treatment of perilunate injuries according to our early follow-up results. Level of evidence Level IV, therapeutic. Disclosure of interest ting interest.

The author has not supplied his declaration of compe-

http://dx.doi.org/10.1016/j.main.2015.10.192 DC10

Palmar mid-carpal instability: My management algorithm Pak Cheong Ho (Chief) Division of Hand and Microsurgery Department of Orthopaedics and Traumatology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China E-mail address: [email protected]

Introduction Palmar mid-carpal instability (PMCI) is an uncommon form of non-dissociative carpal instability, seldom reported in Asian population. It is however an important cause of chronic ulnar wrist pain. Diagnosis can be difficult and high index of suspicion is mandatory. Pathomechanics and optimal treatment of PMCI remains uncertain worldwide. We analyze our unique diagnostic approach in Chinese patients for the proposed etiology and evaluate our management outcomes. Methods Between 1997 and 2010, 16 patients diagnosed PMCI were reviewed for their clinical, radiologic and arthroscopic features. All patients were initially managed conservatively with a disease specific anti-carpal supination splint; refractory cases were evaluated by arthroscopy and treated by arthroscopic thermal shrinkage using radio-frequency appliance as an interim or definite surgical intervention. Shrinkage was targeted at the ulnocarpal ligament at the radiocarpal joint and triquetro-hamate ligament at the mid-carpal joint. Shrinkage of dorsal radiocarpal ligament was not attempted to minimize potential complication. Non-responsive or recurrent cases were managed by a newly designed dorsal radio-carpal ligament reconstruction procedure using a pisiformbased split flexor carpi ulnaris (FCU) tendon graft. Clinical outcomes were evaluated at an average of 86 months. Results Seven male and 9 female patients of a mean age 33.9 were diagnosed PMCI. All except one presented with ulnar wrist pain in their dominant hands. The average duration of symptom was 14 months. Most patients reported minor wrist injury before development of symptoms. Fifty percent of patients were associated with generalized ligamentous laxity. Positive mid-carpal clunk test was most sensitive and specific to diagnose PMCI. Other common clinical features included: lax ulnar column, volar sagging of wrist, increased piso-styloid interval, wrist pain aggravated by passive hand supination and not by passive forearm supination, wrist pain upon resisted pronation, which could be partially alleviated by manually supporting the piso-styloid interval. Common arthroscopic findings were excessive joint space at triquetro-hamate interval and reactive synovitis over the ulnar compartments. Nine cases responded well to conservative treatments. Arthroscopic thermal shrinkage was performed in 4 patients with recurrence in 2 cases. Five patients received split FCU tendon graft for ligament reconstruction and all claimed satisfactory results and restored stability at a mean follow-up 86 months. Conclusion PMCI is not rare in Chinese population but can often be missed. Better understanding of its etiologies, pathomechanics and using systematic method of clinical evaluation helps to establish diagnosis, predict prognosis and management outcomes. Many cases are self-limiting and can be expected to improve over time under conservative treatment. Thermal shrinkage offers an interim and minimally invasive measure to control symptom. The new surgical method of dorsal radio-carpal ligament reconstruction with split FCU graft is relatively simple and provides reliable long-term relief of symptom. Disclosure of interest ting interest.

The author has not supplied his declaration of compe-

http://dx.doi.org/10.1016/j.main.2015.10.193