Publications by authors named "Kan Hing Mak"

Purpose: To review outcome of 29 patients who underwent single-door cervical laminoplasty for myelopathy using titanium miniplates alone.

Methods: Records of 20 men and 9 women aged 35 to 79 (mean, 64.3) years who underwent single-door cervical laminoplasty for myelopathy using titanium miniplates alone were reviewed.

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Study Design: Case report.

Objective: To present a rare case of a patient who during posterior lumbar spinal decompression and diskectomy underwent a laceration of the aorta. The patient survived with prompt treatment.

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A 25-year-old woman with end-stage renal failure presented with subcutaneous calcinosis cutis that grew rapidly in both hands. Radiographs showed subcutaneous lobulated calcific deposits. Magnetic resonance imaging revealed a heterogeneous mass encasing segments of the abductor pollicis longus and extensor pollicis brevis tendons.

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Objective: The objective of this study was to examine the associations between chronic pain and psychiatric morbidity using interview-based assessments of psychiatric symptomatology. We compared the prevalence of common mental disorder (CMD; consistent with neurotic and somatic symptoms, fatigue, and negative affect), depression, and anxiety disorder(s), and associated factors with these psychiatric illnesses among Chinese patients with chronic pain attending specialist orthopedics clinic and multidisciplinary pain clinic.

Methods: A total of 370 patients with chronic pain were recruited from an Orthopedics Clinic (N=185) and a Pain Clinic (N=185) in Hong Kong.

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Irreducible rotary subluxation of the metacarpophalangeal joint (MCPJ) of the thumb is a rare entity. Open reduction is indicated when signs of irreducibility are seen on the radiographs. We present one such case caused by displacement of the sesamoid bone into the intercondylar notch of the first metacarpal bone.

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Purpose: To compare outcomes of anterior spinal fusion (ASF) versus laminoplasty for cervical spondylotic myelopathy (CSM).

Methods: Records of 26 women and 37 men aged 34 to 83 (mean, 67) years who underwent ASF or laminoplasty for CSM were reviewed. Patient demographics, duration of symptoms, pre- and post-operative Japanese Orthopaedic Association (JOA) scores, Hirabayashi recovery rate, and radiographic features (including anteroposterior canal diameter, Pavlov ratio, and number of levels compressed) were compared.

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Purpose: To use a pick-up test to assess thenar motor deficit and results of opponensplasty.

Methods: Eight consecutive patients with idiopathic severe carpal tunnel syndrome and severe thenar motor deficit were identified. All were females aged 39 to 60 (mean, 53) years and right-hand dominant.

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Intradural spinal metastasis is rare. This is the third case ever reported on the finding of intradural spinal metastasis from a renal cell carcinoma that had been removed surgically. The patient had a history of epidural metastasis for which excision and anterior stabilization were done 3 years before the new presentation with cauda equina lesion.

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Study Design: A case of ossification on both sides of the ligamentum flavum in the cervicothoracic junction is described.

Objectives: To review the pathology associated with ossification of the ligamentum flavum in the spine and its incidence at the cervicothoracic junction.

Summary Of Background Data: The literature on the common sites for ossification of the ligamentum flavum is reviewed.

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