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C J M van Loon

Publications and source records attributed to C J M van Loon.

8 recordsLinked to original sources
PubMed2004

No local recurrence of enchondroma after curettage and plaster filling.

INTRODUCTION: The most common treatment of enchondromas is curettage (with or without adjuvant therapy) followed by cancellous bone grafting. To avoid donor-site morbidity of the iliac crest, we applied plaster of Paris as a bone defect filler after curettage of enchondromas. MATERIALS AND METHODS: We treated 19 enchondromas of the hand and foot in 19 patients (mean age 40 years, range 21-79 years) with curettage and filling of the cavity with sterile plaster of Paris (calcium sulphate/phosphate) tablets. RESULTS: The diagnosis was histologically confirmed in all cases. After a mean follow-up of 53 months (range 15-139 months), the mean functional Muskuloskeletal Tumor Society Score was 29.1 points (97%; range 28-30). There were no local recurrences although adjuvant therapy was not utilized. CONCLUSION: Plaster of Paris appears safe and effective as a bone-filling substance after curettage of enchondroma.

Adult↗
PubMed2004

Are surgeons equally satisfied after total knee arthroplasty?

INTRODUCTION: We performed a clinical follow-up study to investigate whether three orthopaedic surgeons were equally satisfied after total knee arthroplasty (TKA). PATIENTS AND METHODS: Thirty-six patients (39 TKAs, mean follow-up 12 months) were reviewed, using the Knee Society Clinical Rating System (KSCRS). For the assessment of satisfaction a visual analogue scale (VAS) was used. RESULTS: We did not find a significant difference in satisfaction between the surgeons. However, there was a significant difference in the knee score and function score of the KSCRS as evaluated by the orthopaedic surgeons (p=0.006 and p=0.04, respectively). The correlation between the knee score and the surgeons' satisfaction was high, which indicates that pain, range of motion and deformity are important success criteria for surgeons. CONCLUSIONS: In this study, surgeons scored differently in the KSCRS but were equally satisfied after TKA.

Adult↗
PubMed2004

Biaxial total wrist arthroplasty in rheumatoid arthritis. Satisfactory functional results.

We reviewed 16 uncemented biaxial total wrist arthroplasties (TWA) in 14 patients with rheumatoid or juvenile arthritis. The mean follow-up was 25 months (range 5-60). According to the Hospital for Special Surgery scoring system (HSS), good-to-excellent results were accomplished in 69%, moderate in 19%, and poor in 12%. The mean pain score was 0.4 on a visual analog scale from 0-10 (0=no pain). The Wrightington activities of daily life assessment chart showed a 63% improvement, and we found a threefold increase in range of motion at follow-up. Four TWAs showed early dislocation, one of which was revised. Biaxial TWA yields good short-term results in rheumatoid patients, although instability is a frequent complication.

Adult↗
PubMed2004

Helix wire osteosynthesis for proximal humeral fractures: unacceptable nonunion rate in two- and three-part fractures.

INTRODUCTION: Fractures of the proximal humerus are very common, but controversy still exists about the preferred type of operative treatment in displaced fractures. MATERIALS AND METHODS: We followed 15 patients (12 female and 3 male, average age 70 years) with 15 dislocated type II (9) and III (6) proximal humeral fractures after helix wire osteosynthesis. RESULTS: A nonunion developed in seven cases (47%). Three patients were reoperated (prosthesis: 2, repair: 1). Seven patients were available for follow-up (average: 14 months). Three patients had a Constant score of 80 or more and four patients had a score under 70 points. CONCLUSION: The results of the helix wire osteosynthesis for proximal humeral fractures are poor and we do not recommend its further use.

Adult↗
PubMed2003

The incidence of dislocation after primary total hip arthroplasty using posterior approach with posterior soft-tissue repair.

BACKGROUND: Dislocation after total hip arthroplasty (THA) is one of the most common major complications, and occurs more often through a posterior approach. We performed a retrospective study to determine the incidence of early dislocation and the relationship to the type of prosthesis and the surgeon's experience. METHODS: A group of 884 consecutive primary THAs (746 cemented and 138 cementless) approached through a posterior incision with repair of the posterior soft tissues was followed for a mean of 30 months. RESULTS: The overall dislocation rate was 1.36% (cemented: 1.1%; cementless: 2.9%). All dislocations were posterior and occurred within 6 months after surgery, 91% within 6 weeks. Dislocations were most common in rheumatoid patients (3.8%). Two revisions (0.23%) of the acetabular cup were performed for recurrent dislocations. The dislocation rate was not higher in the operations performed by less experienced surgeons. CONCLUSION: The early dislocation rate after primary THA through a posterior approach with repair of the posterior soft tissues was low, especially in cemented THA. Less experienced surgeons were not associated with a higher dislocation rate.

Adult↗
PubMed2003

Patient versus surgeon satisfaction after total hip arthroplasty.

We compared patient satisfaction with surgeon satisfaction after total hip arthroplasty (THA) in a group of 193 patients (200 THAs, mean follow-up six years) using a visual analogue scale (VAS), and two objective and two subjective scoring systems. We also determined the survival rate with different endpoints. For the 121 hips available for clinical follow-up, we did not find a significant difference in satisfaction between patient and surgeon. In a subgroup with low patient satisfaction, the surgeon was more satisfied than the patient (p = 0.04). The correlation between the patient satisfaction VAS and the different subjective and objective scoring systems suggests that pain during activity is the most important factor for the patient. The survivorship at six years decreased from 96.6% to 83.7% if dissatisfaction (VAS > 20) was added to revision as an endpoint in the survival analysis. The patient satisfaction VAS provides additional information to evaluate the outcome of THA. We recommend the use of both subjective and objective scoring systems to evaluate the outcome of THA.

Aged↗
PubMed2002

Open capsular shift for multi directional shoulder instability.

We evaluated the outcome of open antero-inferior capsular shift in 17 patients with multidirectional instability of the shoulder who failed to respond to conservative treatment. Six shoulders presented with secondary impingement syndrome and 11 with involuntary instability. The mean duration of follow-up was 39 months (range 7-89 months). Based on the Rowe and Constant scores and the 12-item questionnaire of Dawson, the results were rated excellent in 14 patients, fair in 2 and poor in 1. All but 2 patients were satisfied with the results, although 6 patients experienced some residual pain, and 4 suffered minor instability. There were no neurovascular complications, infections or symptomatic posterior instability. Open antero-inferior capsular shift yields promising short-term to medium-term results in multidirectional, involuntary instability of the shoulder.

Adult↗