Speciality
Spotlight

 



 


Orthopaedics


 

 


Basic Science
  

  • Steinberg ME, Corces A, Fallon M
    [ Univ of Pennsylvania, Philadelphia]
    Acetabular Involvement in
    Osteonecrosis of the Femoral Head

    J Bone Joint Surg Am 81-A:60-65,
    1999
     
    In patients with osteonecrosis of
    the femoral head replacement or resurfacing of the
    femoral head only may be considered as an alternative
    to total hip replacement.
     
    Long-term results of this
    procedure may be disappointing, partially because of
    acetabular cartilage degeneration and protrusio
    acetabuli.
     
    In patients with osteonecrosis of
    the femoral head who require arthroplasty, acetabular
    cartilage abnormalities are usually present, despite
    the normal radiographic appearance.
     
    This observation provides
    justification for replacement of the acetabular side
    of the joint.

       

  • Lamey DM, Fernandez DL (Boise Orthopedic Clinic, Idaho; Lindenhof Hosp, Bern, Switzerland)

    Results of the Modified Sauve-Kapandji Procedure in the Treatment of Chronic Posttraumatic Derangement of the Distal Radioulnar Joint 

    J Bone Joint Surg Am 80-A: 1758-1769, 1998



    The modified Sauve-Kapandji procedure appears to provide a good salvage operation for patients with chronic derangement of the distal radioulnar joint. Tenodesis of the flexor carpi ulnaris to the carpus appears to reduce the risk of ulnar stump instability. 



    This procedure is particularly valuable for patients in whom nonsurgical treatment has failed and who have severely limited forearm rotation. The operation is indicated only for young or active patients, such as those involved in hard manual labor.

       

  • Kawano M, Nagaoka K, Fujita M, et al (Kousei Gen Hosp, Hiroshima, Japan)

    New Technique for Ulnar Shortening Osteotomy

    Tech Hand Upper Extrem Surg 2: 242-247, 1998



    This technique involves performing an osteotory at the site of the metaphysis, where the blood supply is more abundant. Periosteum is easily repaired using 2 wires as fixation material. These procedures appear to contribute to the shortening of time to union, which occurs between 3 to 6 weeks.

       

  • Rinonapoli E, Mancini GB, Corvaglia A, et al (Universita di Perugia, Italy) 

    Tibial Osteotomy for Varus Gonarthrosis: A 10- to
    21-Year Followup Study

    Clin Orthop 353: 185-193, 1998



    This long-term follow-up study reaffirms that high tibial osteotomy for patients with varus gonarthrosis provided long-lasting pain relief with good function and good range of motion. However, the results deteriorate over time, particularly after 15 years. The best results depend on following appropriate indications, i.e., no osteoarthrosis involving the lateral compartment or exceeding Ahlback’s grade 3; varus deformity of fewer than 10 degrees; and no severe instability or loss of range of motion. An anatomic axis of 10 to 12 degrees appears to provide optimal correction. 

       

  • Besong AA, Tipper JL, Ingham E, et al (Univ of Leeds, England)

    Quantitative Comparison of Wear Debris From UHMWPE That Has and Has not Been Sterilised by Gamma Irradiation

    J Bone Joint Surg Br 80-B: 340-344, 1998



    For the same sliding distance and load UHMWPE sterilised by gamma irradiation and aged 10 years produced greater wear volume and wear particles than did non-irradiated UHMWPE.


       

  • Wear 

    Morscher EW, Hefti A, Aebi U (Univ of Basel, Switzerland)

    Severe Osteolysis After Third-Body Wear Due to Hydroxyapatite Particles From Acetabular Cup Coating

    J Bone Joint Surg Br 80-B: 267-272, 1998



    Third-body wear caused by HA particles from implant coating may produce severe clinical problems with few early warning signs. Additional research is needed to determine the incidence of this late complication in the various types of coatings of a variety of substrates.

 

 

         

Speciality Spotlight

 

 

Basic Science
  

  • Steinberg ME, Corces A, Fallon M [ Univ of Pennsylvania, Philadelphia]
    Acetabular Involvement in Osteonecrosis of the Femoral Head
    J Bone Joint Surg Am 81-A:60-65, 1999
     
    In patients with osteonecrosis of the femoral head replacement or resurfacing of the femoral head only may be considered as an alternative to total hip replacement.
     
    Long-term results of this procedure may be disappointing, partially because of acetabular cartilage degeneration and protrusio acetabuli.
     
    In patients with osteonecrosis of the femoral head who require arthroplasty, acetabular cartilage abnormalities are usually present, despite the normal radiographic appearance.
     
    This observation provides justification for replacement of the acetabular side of the joint.
       

  • Lamey DM, Fernandez DL (Boise Orthopedic Clinic, Idaho; Lindenhof Hosp, Bern, Switzerland)
    Results of the Modified Sauve-Kapandji Procedure in the Treatment of Chronic Posttraumatic Derangement of the Distal Radioulnar Joint 
    J Bone Joint Surg Am 80-A: 1758-1769, 1998

    The modified Sauve-Kapandji procedure appears to provide a good salvage operation for patients with chronic derangement of the distal radioulnar joint. Tenodesis of the flexor carpi ulnaris to the carpus appears to reduce the risk of ulnar stump instability. 

    This procedure is particularly valuable for patients in whom nonsurgical treatment has failed and who have severely limited forearm rotation. The operation is indicated only for young or active patients, such as those involved in hard manual labor.
       

  • Kawano M, Nagaoka K, Fujita M, et al (Kousei Gen Hosp, Hiroshima, Japan)
    New Technique for Ulnar Shortening Osteotomy
    Tech Hand Upper Extrem Surg 2: 242-247, 1998

    This technique involves performing an osteotory at the site of the metaphysis, where the blood supply is more abundant. Periosteum is easily repaired using 2 wires as fixation material. These procedures appear to contribute to the shortening of time to union, which occurs between 3 to 6 weeks.
       

  • Rinonapoli E, Mancini GB, Corvaglia A, et al (Universita di Perugia, Italy) 
    Tibial Osteotomy for Varus Gonarthrosis: A 10- to 21-Year Followup Study
    Clin Orthop 353: 185-193, 1998

    This long-term follow-up study reaffirms that high tibial osteotomy for patients with varus gonarthrosis provided long-lasting pain relief with good function and good range of motion. However, the results deteriorate over time, particularly after 15 years. The best results depend on following appropriate indications, i.e., no osteoarthrosis involving the lateral compartment or exceeding Ahlback’s grade 3; varus deformity of fewer than 10 degrees; and no severe instability or loss of range of motion. An anatomic axis of 10 to 12 degrees appears to provide optimal correction. 
       

  • Besong AA, Tipper JL, Ingham E, et al (Univ of Leeds, England)
    Quantitative Comparison of Wear Debris From UHMWPE That Has and Has not Been Sterilised by Gamma Irradiation
    J Bone Joint Surg Br 80-B: 340-344, 1998

    For the same sliding distance and load UHMWPE sterilised by gamma irradiation and aged 10 years produced greater wear volume and wear particles than did non-irradiated UHMWPE.

       

  • Wear 
    Morscher EW, Hefti A, Aebi U (Univ of Basel, Switzerland)
    Severe Osteolysis After Third-Body Wear Due to Hydroxyapatite Particles From Acetabular Cup Coating
    J Bone Joint Surg Br 80-B: 267-272, 1998

    Third-body wear caused by HA particles from implant coating may produce severe clinical problems with few early warning signs. Additional research is needed to determine the incidence of this late complication in the various types of coatings of a variety of substrates.

   

By |2022-07-20T16:44:16+00:00July 20, 2022|Uncategorized|Comments Off on Basic Science

About the Author: